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Stieger JR, Pinheiro-Chagas P, Fang Y, Li J, Lusk Z, Perry CM, Girn M, Contreras D, Chen Q, Huguenard JR, Spreng RN, Edlow BL, Wagner AD, Buch V, Parvizi J. Cross-regional coordination of activity in the human brain during autobiographical self-referential processing. Proc Natl Acad Sci U S A 2024; 121:e2316021121. [PMID: 39078679 PMCID: PMC11317603 DOI: 10.1073/pnas.2316021121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Accepted: 06/10/2024] [Indexed: 07/31/2024] Open
Abstract
For the human brain to operate, populations of neurons across anatomical structures must coordinate their activity within milliseconds. To date, our understanding of such interactions has remained limited. We recorded directly from the hippocampus (HPC), posteromedial cortex (PMC), ventromedial/orbital prefrontal cortex (OFC), and the anterior nuclei of the thalamus (ANT) during two experiments of autobiographical memory processing that are known from decades of neuroimaging work to coactivate these regions. In 31 patients implanted with intracranial electrodes, we found that the presentation of memory retrieval cues elicited a significant increase of low frequency (LF < 6 Hz) activity followed by cross-regional phase coherence of this LF activity before select populations of neurons within each of the four regions increased high-frequency (HF > 70 Hz) activity. The power of HF activity was modulated by memory content, and its onset followed a specific temporal order of ANT→HPC/PMC→OFC. Further, we probed cross-regional causal effective interactions with repeated electrical pulses and found that HPC stimulations cause the greatest increase in LF-phase coherence across all regions, whereas the stimulation of any region caused the greatest LF-phase coherence between that particular region and ANT. These observations support the role of the ANT in gating, and the HPC in synchronizing, the activity of cortical midline structures when humans retrieve self-relevant memories of their past. Our findings offer a fresh perspective, with high temporal fidelity, about the dynamic signaling and underlying causal connections among distant regions when the brain is actively involved in retrieving self-referential memories from the past.
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Affiliation(s)
- James R. Stieger
- Laboratory of Behavioral and Cognitive Neuroscience, Human Intracranial Cognitive Electrophysiology Program, Stanford University School of Medicine, Stanford, CA94305
- Department of Neurology and Neurological Sciences, Stanford School of Medicine, Stanford, CA94305
| | - Pedro Pinheiro-Chagas
- Laboratory of Behavioral and Cognitive Neuroscience, Human Intracranial Cognitive Electrophysiology Program, Stanford University School of Medicine, Stanford, CA94305
| | - Ying Fang
- School of Psychology, South China Normal University, Guangzhou510631, China
| | - Jian Li
- Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA02129
| | - Zoe Lusk
- Laboratory of Behavioral and Cognitive Neuroscience, Human Intracranial Cognitive Electrophysiology Program, Stanford University School of Medicine, Stanford, CA94305
- Department of Neurology and Neurological Sciences, Stanford School of Medicine, Stanford, CA94305
| | - Claire M. Perry
- Laboratory of Behavioral and Cognitive Neuroscience, Human Intracranial Cognitive Electrophysiology Program, Stanford University School of Medicine, Stanford, CA94305
- Department of Neurology and Neurological Sciences, Stanford School of Medicine, Stanford, CA94305
| | - Manesh Girn
- Montreal Neurological Institute, Department Neurology and Neurosurgery, McGill University, Montreal, QCH3G 1A4, Canada
| | - Diego Contreras
- Department of Neuroscience, University of Pennsylvania, School of Medicine, Philadelphia, PA19104
| | - Qi Chen
- School of Psychology, South China Normal University, Guangzhou510631, China
| | - John R. Huguenard
- Department of Neurology and Neurological Sciences, Stanford School of Medicine, Stanford, CA94305
- Wu Tsai Neurosciences Institute, Stanford, CA94305
| | - R. Nathan Spreng
- Montreal Neurological Institute, Department Neurology and Neurosurgery, McGill University, Montreal, QCH3G 1A4, Canada
| | - Brian L. Edlow
- Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA02129
| | - Anthony D. Wagner
- Wu Tsai Neurosciences Institute, Stanford, CA94305
- Department of Psychology, Stanford University, Stanford, CA94305
| | - Vivek Buch
- Department of Neurosurgery, Stanford University, Stanford School of Medicine, Stanford, CA94305
| | - Josef Parvizi
- Laboratory of Behavioral and Cognitive Neuroscience, Human Intracranial Cognitive Electrophysiology Program, Stanford University School of Medicine, Stanford, CA94305
- Department of Neurology and Neurological Sciences, Stanford School of Medicine, Stanford, CA94305
- Wu Tsai Neurosciences Institute, Stanford, CA94305
- Department of Neurosurgery, Stanford University, Stanford School of Medicine, Stanford, CA94305
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Balshin-Rosenberg F, Ghosh V, Gilboa A. It's not a lie … If you believe it: Narrative analysis of autobiographical memories reveals over-confidence disposition in patients who confabulate. Cortex 2024; 175:66-80. [PMID: 38641540 DOI: 10.1016/j.cortex.2024.03.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 02/10/2024] [Accepted: 03/14/2024] [Indexed: 04/21/2024]
Abstract
Humans perceive their personal memories as fundamentally true, and although memory is prone to inaccuracies, flagrant memory errors are rare. Some patients with damage to the ventromedial prefrontal cortex (vmPFC) recall and act upon patently erroneous memories (spontaneous confabulations). Clinical observations suggest these memories carry a strong sense of confidence, a function ascribed to vmPFC in studies of memory and decision making. However, most studies of the underlying mechanisms of memory overconfidence do not directly probe personal recollections and resort instead to laboratory-based tasks and contrived rating scales. We analyzed naturalistic word use of patients with focal vmPFC damage (N = 18) and matched healthy controls (N = 23) while they recalled autobiographical memories using the Linguistic Inquiry and Word Count (LIWC) method. We found that patients with spontaneous confabulation (N = 7) tended to over-use words related to the categories of 'certainty' and of 'swearwords' compared to both non-confabulating vmPFC patients (N = 11) and control participants. Certainty related expressions among confabulating patients were at normal levels during erroneous memories and were over-expressed during accurate memories, contrary to our predictions. We found no elevation in expressions of affect (positive or negative), temporality or drive as would be predicted by some models of confabulation. Thus, erroneous memories may be associated with subjectively lower certainty, but still exceed patients' report criterion because of a global proclivity for overconfidence. This may be compounded by disinhibition reflected by elevated use of swearwords. These findings demonstrate that analysis of naturalistic expressions of memory content can illuminate global meta-mnemonic contributions to memory accuracy complementing indirect laboratory-based correlates of behavior. Memory accuracy is the result of complex interactions among multiple meta-mnemonic processes such as monitoring, report criteria, and control processes which may be shared across decision-making domains.
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Affiliation(s)
| | - Vanessa Ghosh
- Rotman Research Institute at Baycrest Health Sciences, Canada
| | - Asaf Gilboa
- Rotman Research Institute at Baycrest Health Sciences, Canada; Department of Psychology, University of Toronto, Canada; Toronto Rehabilitation Institute, University Health Network, Canada.
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Pupillo F, Düzel S, Kühn S, Lindenberger U, Shing YL. Deficits in memory metacognitive efficiency in late adulthood are related to distinct brain profile. Memory 2024:1-17. [PMID: 38635864 DOI: 10.1080/09658211.2024.2341711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 04/03/2024] [Indexed: 04/20/2024]
Abstract
The tendency of falsely remembering events that did not happen in the past increases with age. This is particularly evident in cases in which features presented at study are re-presented at test in a recombined constellation (termed rearranged pairs). Interestingly, older adults also express high confidence in such false memories, a tendency that may indicate reduced metacognitive efficiency. Within an existing cohort study, we aimed at investigating age-related differences in memory metacognitive efficiency (as measured by meta d' ratio) in a sample of 1522 older adults and 397 young adults. The analysis showed an age-related deficit in metacognition which was more pronounced for rearranged pairs than for new pairs. We then explored associations between cortical thickness and memory metacognitive efficiency for rearranged pairs in a subsample of 231 older adults. By using partial least square analysis, we found that a multivariate profile composed by ventromedial prefrontal cortex, insula, and parahippocampal cortex was uniquely associated with between-person differences in memory metacognitive efficiency. These results suggest that the impairment in memory metacognitive efficiency for false alarms is a distinct age-related deficit, above and beyond a general age-related decline in memory discrimination, and that it is associated with brain regions involved in metacognitive processes.
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Affiliation(s)
- Francesco Pupillo
- Department of Psychology, Goethe University Frankfurt, Frankfurt am Main, Germany
- TS Social and Behavioural Sciences, Tilburg University, Tilburg, Netherlands
| | - Sandra Düzel
- Friede Springer Cardiovascular Prevention Center @Charité, Berlin, Germany
| | - Simone Kühn
- Max Planck UCL Centre for Computational Psychiatry and Ageing Research, Berlin, German
- Lise-Meitner Group for Environmental Neuroscience, Max Planck Institute for Human Development, Berlin, Germany
| | - Ulman Lindenberger
- Max Planck UCL Centre for Computational Psychiatry and Ageing Research, Berlin, German
- Center for Lifespan Psychology, Max Planck Institute for Human Development, Berlin, Germany
| | - Yee Lee Shing
- Department of Psychology, Goethe University Frankfurt, Frankfurt am Main, Germany
- IDeA Center for Individual Development and Adaptive Education, Frankfurt am Main, Germany
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Iravani B, Kaboodvand N, Stieger JR, Liang EY, Lusk Z, Fransson P, Deutsch GK, Gotlib IH, Parvizi J. Intracranial Recordings of the Human Orbitofrontal Cortical Activity during Self-Referential Episodic and Valenced Self-Judgments. J Neurosci 2024; 44:e1634232024. [PMID: 38316564 PMCID: PMC10941238 DOI: 10.1523/jneurosci.1634-23.2024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 12/23/2023] [Accepted: 01/17/2024] [Indexed: 02/07/2024] Open
Abstract
We recorded directly from the orbital (oPFC) and ventromedial (vmPFC) subregions of the orbitofrontal cortex (OFC) in 22 (9 female, 13 male) epilepsy patients undergoing intracranial electroencephalography (iEEG) monitoring during an experimental task in which the participants judged the accuracy of self-referential autobiographical statements as well as valenced self-judgments (SJs). We found significantly increased high-frequency activity (HFA) in ∼13% of oPFC sites (10/18 subjects) and 16% of vmPFC sites (4/12 subjects) during both of these self-referential thought processes, with the HFA power being modulated by the content of self-referential stimuli. The location of these activated sites corresponded with the location of fMRI-identified limbic network. Furthermore, the onset of HFA in the vmPFC was significantly earlier than that in the oPFC in all patients with simultaneous recordings in both regions. In 11 patients with available depression scores from comprehensive neuropsychological assessments, we documented diminished HFA in the OFC during positive SJ trials among individuals with higher depression scores; responses during negative SJ trials were not related to the patients' depression scores. Our findings provide new temporal and anatomical information about the mode of engagement in two important subregions of the OFC during autobiographical memory and SJ conditions. Our findings from the OFC support the hypothesis that diminished brain activity during positive self-evaluations, rather than heightened activity during negative self-evaluations, plays a key role in the pathophysiology of depression.
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Affiliation(s)
- Behzad Iravani
- Laboratory of Behavioral and Cognitive Neuroscience, Stanford University, Palo Alto, California 94305
- Departments of Neurology and Neurological Sciences, Stanford University, Palo Alto, California 94305
- Department of Clinical Neuroscience, Karolinska Institute, 17177 Stockholm, Sweden
| | - Neda Kaboodvand
- Laboratory of Behavioral and Cognitive Neuroscience, Stanford University, Palo Alto, California 94305
- Department of Clinical Neuroscience, Karolinska Institute, 17177 Stockholm, Sweden
| | - James R Stieger
- Laboratory of Behavioral and Cognitive Neuroscience, Stanford University, Palo Alto, California 94305
- Departments of Neurology and Neurological Sciences, Stanford University, Palo Alto, California 94305
| | - Eugene Y Liang
- Laboratory of Behavioral and Cognitive Neuroscience, Stanford University, Palo Alto, California 94305
- Departments of Neurology and Neurological Sciences, Stanford University, Palo Alto, California 94305
| | - Zoe Lusk
- Laboratory of Behavioral and Cognitive Neuroscience, Stanford University, Palo Alto, California 94305
- Departments of Neurology and Neurological Sciences, Stanford University, Palo Alto, California 94305
| | - Peter Fransson
- Department of Clinical Neuroscience, Karolinska Institute, 17177 Stockholm, Sweden
| | - Gayle K Deutsch
- Departments of Neurology and Neurological Sciences, Stanford University, Palo Alto, California 94305
| | - Ian H Gotlib
- Department of Psychology, Stanford University, Palo Alto, California 94305
| | - Josef Parvizi
- Laboratory of Behavioral and Cognitive Neuroscience, Stanford University, Palo Alto, California 94305
- Departments of Neurology and Neurological Sciences, Stanford University, Palo Alto, California 94305
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Lauzon C, Chiasso D, Rabin JS, Ciaramelli E, Rosenbaum RS. Ventromedial Prefrontal Cortex Does Not Play a Selective Role in Pattern Separation. J Cogn Neurosci 2024; 36:435-446. [PMID: 38060255 DOI: 10.1162/jocn_a_02096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2023]
Abstract
Humans have the capacity to form new memories of events that are, at times, highly similar to events experienced in the past, as well as the capacity to integrate and associate new information within existing knowledge structures. The former process relies on mnemonic discrimination and is believed to depend on hippocampal pattern separation, whereas the latter is believed to depend on generalization signals and conceptual categorization supported by the neocortex. Here, we examine whether and how the ventromedial prefrontal cortex (vMPFC) supports discrimination and generalization on a widely used task that was primarily designed to tax hippocampal processes. Ten individuals with lesions to the vMPFC and 46 neurotypical control participants were administered an adapted version of the mnemonic similarity task [Stark, S. M., Yassa, M. A., Lacy, J. W., & Stark, C. E. L. A task to assess behavioral pattern separation (BPS) in humans: Data from healthy aging and mild cognitive impairment. Neuropsychologia, 51, 2442-2449, 2013], which assesses the ability to distinguish previously learned images of everyday objects (targets) from unstudied, highly similar images (lures) and dissimilar images (foils). Relative to controls, vMPFC-lesioned individuals showed intact discrimination of lures from targets but a propensity to mistake studied targets and similar lures for dissimilar foils. This pattern was accompanied by inflated confidence despite low accuracy when responding to similar lures. These findings demonstrate a more general role of the vMPFC in memory retrieval, rather than a specific role in supporting pattern separation.
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Affiliation(s)
- Claire Lauzon
- Department of Psychology and Centre for Vision Research, York University, Toronto, Canada
- Rotman Research Institute, Toronto, Canada
| | - Daniel Chiasso
- Centre for Studies and Research in Cognitive Neuroscience, University of Bologna, Italy
| | - Jennifer S Rabin
- University of Toronto, Canada
- Harquail Centre for Neuromodulation, Hurvitz Brain Sciences Program, Sunnybrook Research Institute, Toronto, Canada
- Rehabilitation Sciences Institute, University of Toronto, Toronto, Canada
| | - Elisa Ciaramelli
- Centre for Studies and Research in Cognitive Neuroscience, University of Bologna, Italy
- Department of Psychology 'Renzo Canestrari', University of Bologna, Bologna, Italy
| | - R Shayna Rosenbaum
- Department of Psychology and Centre for Vision Research, York University, Toronto, Canada
- Rotman Research Institute, Toronto, Canada
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Sadeh T, Moscovitch M. Retrieval of temporal structure at recall can occur automatically. Cognition 2024; 242:105647. [PMID: 37857055 DOI: 10.1016/j.cognition.2023.105647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 10/06/2023] [Accepted: 10/10/2023] [Indexed: 10/21/2023]
Abstract
Temporal-structure, namely, the order in which events unfold over time, is one of the fundamental principles of episodic memory organization. A seminal empirical demonstration of the prominence of temporal structure in memory organization is the Temporal Contiguity Effect (TCE), whereby the proximity between two items at encoding predicts the likelihood of those two items being retrieved consecutively during recall. Recent studies have found that TCE occurs under a wide variety of conditions in which strategic control processes at encoding are reduced or even eliminated. This suggests that the encoding of temporal structure occurs automatically. Extending these findings, in the current study we asked whether the retrieval of temporal structure, as reflected by indices of the TCE, is influenced by strategic control processes at retrieval. To manipulate participants' ability to rely on strategic control processes, we compared standard recall performance (Full Attention condition) to a condition in which attention was divided between recall and a concurrent task (Divided Attention condition), which has been shown to disrupt such control processes. Across two experiments-one with standard encoding conditions and one with continual distraction during encoding-we found no differences in any index of the TCE between the two conditions. These results are all the more striking considering that in both experiments, dividing attention negatively affected overall recall performance compared to the Full Attention condition. Thus, while recall performance is reduced when disrupting strategic processes, the ability to use temporal structure to drive recall is not affected.
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Affiliation(s)
- Talya Sadeh
- The Department of Cognitive and Brain Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel; Department of Psychology, Ben-Gurion University of the Negev, Beer Sheva, Israel; The School of Brain Sciences and Cognition, Ben-Gurion University of the Negev, Beer Sheva, Israel.
| | - Morris Moscovitch
- Rotman Research Institute, Baycrest Centre, Toronto, Ontario, Canada; Department of Psychology, University of Toronto, Canada
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Stendardi D, Basu A, Treves A, Ciaramelli E. Déjà vu: A botched memory operation, illegitimate to start with. Behav Brain Sci 2023; 46:e378. [PMID: 37961795 DOI: 10.1017/s0140525x2300016x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2023]
Abstract
Rather than a natural product, a computational analysis leads us to characterize déjà vu as a failure of memory retrieval, linked to the activation in neocortex of familiar items from a compositional memory in the absence of hippocampal input, and to a misappropriation by the self of what is of others.
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Affiliation(s)
- Debora Stendardi
- Dipartimento di Psicologia 'Renzo Canestrari', Università di Bologna, Bologna, Italy
| | | | | | - Elisa Ciaramelli
- Dipartimento di Psicologia 'Renzo Canestrari', Università di Bologna, Bologna, Italy
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Kopelman MD. Observations on the Clinical Features of the Wernicke-Korsakoff Syndrome. J Clin Med 2023; 12:6310. [PMID: 37834954 PMCID: PMC10573380 DOI: 10.3390/jcm12196310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 08/30/2023] [Accepted: 09/26/2023] [Indexed: 10/15/2023] Open
Abstract
This paper begins with a short case report of florid, spontaneous confabulation in a 61-year-old man with an alcohol-induced Wernicke-Korsakoff syndrome. His confabulation extended across episodic and personal semantic memory, as well as orientation in time and place, as measured on Dalla Barba's Confabulation Battery. Five other brief case summaries will then be presented, followed by a summary of the clinical, neurological, and background neuropsychological findings in three earlier series of Korsakoff patients. These observations will be considered in light of Wijnia's recent and my own, earlier reviews of the Korsakoff syndrome. Taken together, they indicate the need for a multi-faceted approach (clinical, neurological, neuropsychological, and neuroimaging) to the assessment and diagnosis of the disorder.
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Affiliation(s)
- Michael D Kopelman
- King's College London, Institute of Psychiatry, Psychology & Neuroscience, London SE5 8AF, UK
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Stendardi D, Giordani LG, Gambino S, Kaplan R, Ciaramelli E. Who am I really? The ephemerality of the self-schema following vmPFC damage. Neuropsychologia 2023; 188:108651. [PMID: 37481034 DOI: 10.1016/j.neuropsychologia.2023.108651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 07/17/2023] [Accepted: 07/20/2023] [Indexed: 07/24/2023]
Abstract
We studied the role of the ventromedial prefrontal cortex (vmPFC) in supporting the self-schema, by asking vmPFC patients, along with healthy and brain-damaged controls, to judge the degree to which they (or another person) were likely to engage in a series of activities, and how confident they were in their responses. Critically, participants provided their judgments on two separate occasions, a week apart. Our underlying assumption was that a strong self-schema would lead to confident and stable self-related judgments. We observed that control groups exhibited higher across-session consistency for self-related compared to other-related judgments, while this self-advantage was absent in vmPFC patients. In addition, regression analyses showed that in control groups the level of confidence associated with a specific (self- or other-related) judgment predicted the stability of that judgment across sessions. In contrast, vmPFC patients' confidence and rating consistency were aligned only for other-related judgments. By contrast, self-related judgments changed across sessions regardless of the confidence level with which they were initially endorsed. These findings indicate that the vmPFC is crucial to maintaining the self-schema and supporting the reliable retrieval of self-related information.
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Affiliation(s)
- Debora Stendardi
- Dipartimento di Psicologia 'Renzo Canestrari', Università di Bologna, Bologna, 40126, Italy; Centro di Studi e Ricerche in Neuroscienze Cognitive, University of Bologna, Cesena Campus, Cesena, 47521, Italy.
| | - Luca Giacometti Giordani
- Centro di Studi e Ricerche in Neuroscienze Cognitive, University of Bologna, Cesena Campus, Cesena, 47521, Italy
| | - Silvia Gambino
- Centro di Studi e Ricerche in Neuroscienze Cognitive, University of Bologna, Cesena Campus, Cesena, 47521, Italy
| | - Raphael Kaplan
- Department of Basic Psychology, Clinical Psychology, and Psychobiology, Universitat Jaume I, Castelló de La Plana, 12071, Spain
| | - Elisa Ciaramelli
- Dipartimento di Psicologia 'Renzo Canestrari', Università di Bologna, Bologna, 40126, Italy; Centro di Studi e Ricerche in Neuroscienze Cognitive, University of Bologna, Cesena Campus, Cesena, 47521, Italy.
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Bateman JR, Ferguson MA, Anderson CA, Arciniegas DB, Gilboa A, Berman BD, Fox MD. Network Localization of Spontaneous Confabulation. J Neuropsychiatry Clin Neurosci 2023; 36:45-52. [PMID: 37415502 DOI: 10.1176/appi.neuropsych.20220160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 07/08/2023]
Abstract
OBJECTIVE Spontaneous confabulation is a symptom in which false memories are conveyed by the patient as true. The purpose of the study was to identify the neuroanatomical substrate of this complex symptom and evaluate the relationship to related symptoms, such as delusions and amnesia. METHODS Twenty-five lesion locations associated with spontaneous confabulation were identified in a systematic literature search. The network of brain regions functionally connected to each lesion location was identified with a large connectome database (N=1,000) and compared with networks derived from lesions associated with nonspecific (i.e., variable) symptoms (N=135), delusions (N=32), or amnesia (N=53). RESULTS Lesions associated with spontaneous confabulation occurred in multiple brain locations, but they were all part of a single functionally connected brain network. Specifically, 100% of lesions were connected to the mammillary bodies (familywise error rate [FWE]-corrected p<0.05). This connectivity was specific for lesions associated with confabulation compared with lesions associated with nonspecific symptoms or delusions (FWE-corrected p<0.05). Lesions associated with confabulation were more connected to the orbitofrontal cortex than those associated with amnesia (FWE-corrected p<0.05). CONCLUSIONS Spontaneous confabulation maps to a common functionally connected brain network that partially overlaps, but is distinct from, networks associated with delusions or amnesia. These findings lend new insight into the neuroanatomical bases of spontaneous confabulation.
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Affiliation(s)
- James R Bateman
- Department of Neurology, Wake Forest School of Medicine, Winston-Salem, N.C., and Mental Illness Research, Education and Clinical Center, Salisbury VA Medical Center, Salisbury, N.C. (Bateman); Department of Neurology and Center for Brain Circuit Therapeutics, Brigham and Women's Hospital, Boston (Ferguson, Fox); Behavioral Neurology Section, Department of Neurology, University of Colorado Anschutz Medical Campus, Aurora (Anderson, Arciniegas); Department of Psychiatry and Behavioral Sciences, University of New Mexico School of Medicine, Albuquerque (Arciniegas); Rotman Research Institute at Baycrest Health Sciences and Department of Psychology, University of Toronto, Toronto (Gilboa); Department of Neurology, Virginia Commonwealth University, Richmond, Va. (Berman)
| | - Michael A Ferguson
- Department of Neurology, Wake Forest School of Medicine, Winston-Salem, N.C., and Mental Illness Research, Education and Clinical Center, Salisbury VA Medical Center, Salisbury, N.C. (Bateman); Department of Neurology and Center for Brain Circuit Therapeutics, Brigham and Women's Hospital, Boston (Ferguson, Fox); Behavioral Neurology Section, Department of Neurology, University of Colorado Anschutz Medical Campus, Aurora (Anderson, Arciniegas); Department of Psychiatry and Behavioral Sciences, University of New Mexico School of Medicine, Albuquerque (Arciniegas); Rotman Research Institute at Baycrest Health Sciences and Department of Psychology, University of Toronto, Toronto (Gilboa); Department of Neurology, Virginia Commonwealth University, Richmond, Va. (Berman)
| | - C Alan Anderson
- Department of Neurology, Wake Forest School of Medicine, Winston-Salem, N.C., and Mental Illness Research, Education and Clinical Center, Salisbury VA Medical Center, Salisbury, N.C. (Bateman); Department of Neurology and Center for Brain Circuit Therapeutics, Brigham and Women's Hospital, Boston (Ferguson, Fox); Behavioral Neurology Section, Department of Neurology, University of Colorado Anschutz Medical Campus, Aurora (Anderson, Arciniegas); Department of Psychiatry and Behavioral Sciences, University of New Mexico School of Medicine, Albuquerque (Arciniegas); Rotman Research Institute at Baycrest Health Sciences and Department of Psychology, University of Toronto, Toronto (Gilboa); Department of Neurology, Virginia Commonwealth University, Richmond, Va. (Berman)
| | - David B Arciniegas
- Department of Neurology, Wake Forest School of Medicine, Winston-Salem, N.C., and Mental Illness Research, Education and Clinical Center, Salisbury VA Medical Center, Salisbury, N.C. (Bateman); Department of Neurology and Center for Brain Circuit Therapeutics, Brigham and Women's Hospital, Boston (Ferguson, Fox); Behavioral Neurology Section, Department of Neurology, University of Colorado Anschutz Medical Campus, Aurora (Anderson, Arciniegas); Department of Psychiatry and Behavioral Sciences, University of New Mexico School of Medicine, Albuquerque (Arciniegas); Rotman Research Institute at Baycrest Health Sciences and Department of Psychology, University of Toronto, Toronto (Gilboa); Department of Neurology, Virginia Commonwealth University, Richmond, Va. (Berman)
| | - Asaf Gilboa
- Department of Neurology, Wake Forest School of Medicine, Winston-Salem, N.C., and Mental Illness Research, Education and Clinical Center, Salisbury VA Medical Center, Salisbury, N.C. (Bateman); Department of Neurology and Center for Brain Circuit Therapeutics, Brigham and Women's Hospital, Boston (Ferguson, Fox); Behavioral Neurology Section, Department of Neurology, University of Colorado Anschutz Medical Campus, Aurora (Anderson, Arciniegas); Department of Psychiatry and Behavioral Sciences, University of New Mexico School of Medicine, Albuquerque (Arciniegas); Rotman Research Institute at Baycrest Health Sciences and Department of Psychology, University of Toronto, Toronto (Gilboa); Department of Neurology, Virginia Commonwealth University, Richmond, Va. (Berman)
| | - Brian D Berman
- Department of Neurology, Wake Forest School of Medicine, Winston-Salem, N.C., and Mental Illness Research, Education and Clinical Center, Salisbury VA Medical Center, Salisbury, N.C. (Bateman); Department of Neurology and Center for Brain Circuit Therapeutics, Brigham and Women's Hospital, Boston (Ferguson, Fox); Behavioral Neurology Section, Department of Neurology, University of Colorado Anschutz Medical Campus, Aurora (Anderson, Arciniegas); Department of Psychiatry and Behavioral Sciences, University of New Mexico School of Medicine, Albuquerque (Arciniegas); Rotman Research Institute at Baycrest Health Sciences and Department of Psychology, University of Toronto, Toronto (Gilboa); Department of Neurology, Virginia Commonwealth University, Richmond, Va. (Berman)
| | - Michael D Fox
- Department of Neurology, Wake Forest School of Medicine, Winston-Salem, N.C., and Mental Illness Research, Education and Clinical Center, Salisbury VA Medical Center, Salisbury, N.C. (Bateman); Department of Neurology and Center for Brain Circuit Therapeutics, Brigham and Women's Hospital, Boston (Ferguson, Fox); Behavioral Neurology Section, Department of Neurology, University of Colorado Anschutz Medical Campus, Aurora (Anderson, Arciniegas); Department of Psychiatry and Behavioral Sciences, University of New Mexico School of Medicine, Albuquerque (Arciniegas); Rotman Research Institute at Baycrest Health Sciences and Department of Psychology, University of Toronto, Toronto (Gilboa); Department of Neurology, Virginia Commonwealth University, Richmond, Va. (Berman)
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11
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Rensen YCM, Oosterman JM, Eling PATM, Kessels RPC. "Cinderella was attacked by the big bad wolf, but the police saved her": intrusions and confabulations on story recall in Korsakoff's syndrome and alcohol-related cognitive impairments. Cogn Neuropsychiatry 2023; 28:85-101. [PMID: 36472235 DOI: 10.1080/13546805.2022.2153658] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND The relation between confabulations and intrusions in patients with Korsakoff's syndrome (KS) and patients with alcohol-related cognitive impairments (ARCI) remains under debate. This study examines (1) differences in the production of confabulations and intrusions between patients with KS and ARCI, (2) whether an altered fairy tale induces more intrusions, and (3) whether different types of intrusions were significantly related to confabulations. METHODS Twenty-three patients with KS and twenty-two patients with ARCI recalled three different types of stories: a novel story, a fairy tale, and a modified fairy tale. Different types of intrusions were correlated with confabulation measures. RESULTS Patients with KS produced more intrusions in the modified fairy tale condition than patients with ARCI, but these were unrelated to confabulations. Only unrelated intrusions were related to provoked confabulations. CONCLUSIONS The results of this study indicate that researchers and clinicians must be aware that in general, intrusions on memory tests should not be interpreted as confabulations. Especially spontaneous confabulations appear to be something completely different from intrusions on any type of story recall. When measuring confabulations it is crucial to use validated instruments.
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Affiliation(s)
- Yvonne C M Rensen
- Vincent van Gogh Institute for Psychiatry, Centre of Excellence for Korsakoff and Alcohol-Related Cognitive Disorders, Korsakoff Clinic, Venray, The Netherlands
| | - Joukje M Oosterman
- Radboud University, Donders Institute for Brain, Cognition, and Behaviour, Nijmegen, The Netherlands
| | - Paul A T M Eling
- Radboud University, Donders Institute for Brain, Cognition, and Behaviour, Nijmegen, The Netherlands
| | - Roy P C Kessels
- Vincent van Gogh Institute for Psychiatry, Centre of Excellence for Korsakoff and Alcohol-Related Cognitive Disorders, Korsakoff Clinic, Venray, The Netherlands
- Radboud University, Donders Institute for Brain, Cognition, and Behaviour, Nijmegen, The Netherlands
- Tactus Addiction Care, Deventer, The Netherlands
- Radboud University Medical Center, Department of Medical Psychology, Nijmegen, The Netherlands
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12
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Rehabilitation of Memory Disorders. CLINICAL AND TRANSLATIONAL NEUROSCIENCE 2023. [DOI: 10.3390/ctn7010007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023] Open
Abstract
Memory disorders are common in clinical practice. This review focuses on the rehabilitation of anterograde amnesia, the inability to learn and retrieve new information, in non-degenerative brain disease. Diverse mnemonic strategies may be helpful in learning specific pieces of information. Their success also depends on the severity of associated cognitive failures, in particular, executive dysfunction. However, unless transfer to everyday activities is specifically trained, such strategies are of limited value in promoting independence in daily life. External memory aids are often necessary to allow for independent living. Learning to use them requires intact capacities such as procedural learning or conditioning. This review further discusses the rehabilitation of confabulation, that is, the emergence of memories of events that never happened. The rehabilitation of memory disorders needs to be tailored to patients’ individual capacities and needs.
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13
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Colás-Blanco I, Chica AB, Thiebaut de Schotten M, Busquier H, Olivares G, Triviño M. Impaired attention mechanisms in confabulating patients: A VLSM and DWI study. Cortex 2023; 159:175-192. [PMID: 36634529 DOI: 10.1016/j.cortex.2022.09.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 04/26/2022] [Accepted: 09/13/2022] [Indexed: 12/23/2022]
Abstract
Attention is one of the most studied cognitive functions in brain-damaged populations or neurological syndromes, as its malfunction can be related to deficits in other higher cognitive functions. In the present study, we aimed at delimiting the attention deficits of a sample of brain-injured patients presenting confabulations by assessing their performance on alertness, spatial orienting, and executive control tasks. Confabulating patients, who present false memories or beliefs without intention to deceive, usually show memory deficits and/or executive dysfunction. However, it is also likely that attention processes may be impaired in patients showing confabulations. Here, we compared confabulating patients' attention performance to a lesion control group and a healthy control group. Confabulating patients' mean overall accuracy was lower than the one of healthy and lesion controls along the three experimental tasks. Importantly, confabulators presented a greater Simon congruency effect than both lesion controls and healthy controls in the presence of predictive spatial cues, besides a lower percentage of hits and longer RTs in the Go-NoGo task, demonstrating deficits in executive control. They also showed a higher reliance on alerting and spatially predictive orienting cues in the context of a deficient performance. Grey and white matter analyses showed that patients' percentage of hits in the Go-NoGo task was related to damage to the right inferior frontal gyrus (pars triangularis and pars opercularis), whereas the integrity of the right inferior fronto-occipital fasciculus was negatively correlated with their alertness effect. These results are consistent with previous literature highlighting an executive dysfunction in confabulating patients, and suggest that some additional forms of attention, such as alertness and spatial orienting, could be selectively impaired in this clinical syndrome.
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Affiliation(s)
- Itsaso Colás-Blanco
- Laboratoire Mémoire, Cerveau et Cognition, Université Paris Cité, Boulogne-Billancourt, Île de France, France; Mind, Brain, and Behavior Research Center (CIMCYC), University of Granada, Spain; Department of Experimental Psychology, Faculty of Psychology, University of Granada, Spain.
| | - Ana B Chica
- Mind, Brain, and Behavior Research Center (CIMCYC), University of Granada, Spain; Department of Experimental Psychology, Faculty of Psychology, University of Granada, Spain.
| | - Michel Thiebaut de Schotten
- Brain Connectivity and Behaviour Group, Sorbonne Universities, Paris France; Groupe d'Imagerie Neurofonctionnelle, Institut des Maladies Neurodégénératives-UMR 5293, CNRS, CEA University of Bordeaux, Bordeaux, France
| | - Heriberto Busquier
- Grupo CSUR de epilepsia Refractaria, Servicio de Neurocirugía, Hospital Virgen de Las Nieves, Granada, Spain
| | - Gonzalo Olivares
- Grupo CSUR de epilepsia Refractaria, Servicio de Neurocirugía, Hospital Virgen de Las Nieves, Granada, Spain
| | - Mónica Triviño
- Servicio de Neuropsicología. Hospital Universitario San Rafael, Granada, Spain
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14
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Francis C, MacCallum F, Pierce S. Interventions for confabulation: A systematic literature review. Clin Neuropsychol 2022; 36:1997-2020. [PMID: 34289780 DOI: 10.1080/13854046.2021.1948612] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
OBJECTIVE Confabulations are false memories which are expressedwithout the intention to deceive and arise following brain damage or psychological dysfunction. Confabulations can become a barrier to effective neuropsychological rehabilitation and consequently, intervention is required.The current review aimed to provide a detailed evaluative account of existing interventions for confabulation and their relative effectiveness. METHOD The search process found 11 studies conducive with the inclusion and exclusion criteria. A methodological quality assessment was then carried out and the majority of included studies demonstrated poor methodological quality. RESULTS Ten types of interventions were identified and the majority of theseled to a reduction or elimination of confabulations. CONCLUSION Since methodological quality of many included studies was deemed unsatisfactory, further large-scale experimental research and standardised measures are necessary to adequately compare the relative effectiveness of these interventions. Further research and clinical implications are also highlighted.
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Affiliation(s)
- Cheryl Francis
- Department of Psychology, University of Warwick, Coventry, UK
| | - Fiona MacCallum
- Department of Psychology, University of Warwick, Coventry, UK
| | - Siân Pierce
- Royal Leamington Spa Rehabilitation Hospital, South Warwickshire NHS Foundation Trust, Warwick, UK
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15
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Cansino S. Brain connectivity changes associated with episodic recollection decline in aging: A review of fMRI studies. Front Aging Neurosci 2022; 14:1012870. [PMID: 36389073 PMCID: PMC9640923 DOI: 10.3389/fnagi.2022.1012870] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Accepted: 09/28/2022] [Indexed: 12/03/2022] Open
Abstract
With advancing age, individuals experience a gradual decline in recollection, the ability to retrieve personal experiences accompanied by details, such as temporal and spatial contextual information. Numerous studies have identified several brain regions that exhibit age-related activation differences during recollection tasks. More recently, an increasing number of studies have provided evidence regarding how brain connectivity among the regions supporting recollection contributes to the explanation of recollection deficits in aging. However, brain connectivity evidence has not been examined jointly to provide an integrative view of how these new findings have improved our knowledge of the neurofunctional changes underlying the recollection deficits associated with aging. Therefore, the aim of the present study was to examine functional magnetic resonance imaging (fMRI) studies that employed one of the numerous methods available for analyzing brain connectivity in older adults. Only studies that applied connectivity analysis to data recorded during episodic recollection tasks, either during encoding or retrieval, were assessed. First, the different brain connectivity analysis methods and the information conveyed were briefly described. Then, the brain connectivity findings from the different studies were described and discussed to provide an integrative point of view of how these findings explain the decline in recollection associated with aging. The studies reviewed provide evidence that the hippocampus consistently decreased its connectivity with the parahippocampal gyrus and the posterior cingulate cortex, essential regions of the recollection network, in older adults relative to young adults. In addition, older adults exhibited increased connectivity between the hippocampus and several widespread regions compared to young adults. The increased connectivity was interpreted as brain intensification recourse to overcome recollection decay. Additionally, suggestions for future research in the field are outlined.
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16
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Oudman E, Rensen Y, Kessels RPC. Confabulations in post-acute and chronic alcoholic Korsakoff's syndrome: a cross-sectional study conducted in two centres. Int J Psychiatry Clin Pract 2022; 26:208-212. [PMID: 34057880 DOI: 10.1080/13651501.2021.1906907] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
INTRODUCTION Confabulations refer to the emergence of memories of experiences and events that are incorrect in place and time, or never took place. In alcoholic Korsakoff's syndrome, confabulations have been frequently reported, but seldomly been investigated. Traditional reports on confabulations state that confabulations in KS mainly occur in the post-acute phase of the illness. The aim of the study was to investigate whether confabulations extinguish in KS. METHODS An observational rating of confabulation behaviour (the NVCL-R) was completed for 172 KS patients with alcoholic KS. Post-acute and chronic KS patients were compared cross-sectionally in two centres. RESULTS Provoked and spontaneous confabulations were present in post-acute and chronic patients. Patients residing in a long-term care facility more often presented themselves with spontaneous confabulations than patients in a diagnostic centre. CONCLUSIONS In contrast to the traditional view, confabulations may be present throughout the course of KS, and are possibly more frequently present in patients receiving care in specialised long-term care facilities than in patients who receive less intensive support.Key pointsConfabulations are a central characteristic of Korsakoff's syndromeIn contrast to popular belief, confabulations may be present in acute and chronic Korsakoff's syndromeThe severity of confabulations is related to an unfavourable disease outcome in KSA longitudinal approach would help the confirmation of finding no decline in confabulations over time.
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Affiliation(s)
- Erik Oudman
- Experimental Psychology, Helmholtz Institute, Utrecht University, Utrecht, The Netherlands.,Lelie Care Group, Slingedael Korsakoff Center, Rotterdam, The Netherlands
| | - Yvonne Rensen
- Center of Excellence for Korsakoff and Alcohol-Related Cognitive Disorders, Vincent van Gogh Institute for Psychiatry, Venray, The Netherlands
| | - Roy P C Kessels
- Center of Excellence for Korsakoff and Alcohol-Related Cognitive Disorders, Vincent van Gogh Institute for Psychiatry, Venray, The Netherlands.,Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, The Netherlands.,Department of Medical Psychology, Radboud University Medical Center, Nijmegen, The Netherlands
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17
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Johnson EL, Chang WK, Dewar CD, Sorensen D, Lin JJ, Solbakk AK, Endestad T, Larsson PG, Ivanovic J, Meling TR, Scabini D, Knight RT. Orbitofrontal cortex governs working memory for temporal order. Curr Biol 2022; 32:R410-R411. [PMID: 35537388 PMCID: PMC9169582 DOI: 10.1016/j.cub.2022.03.074] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
How do we think about time? Converging lesion and neuroimaging evidence indicates that orbitofrontal cortex (OFC) supports the encoding and retrieval of temporal context in long-term memory1, which may contribute to confabulation in individuals with OFC damage2. Here, we reveal that OFC damage diminishes working memory for temporal order, that is, the ability to disentangle the relative recency of events as they unfold. OFC lesions reduced working memory for temporal order but not spatial position, and individual deficits were commensurate with lesion size. Comparable effects were absent in patients with lesions restricted to lateral prefrontal cortex (PFC). Based on these findings, we propose that OFC supports understanding of the order of events. Well-documented behavioral changes in individuals with OFC damage2 may relate to impaired temporal-order understanding.
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Affiliation(s)
- Elizabeth L Johnson
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA 94720, USA; Departments of Medical Social Sciences and Pediatrics, Northwestern University, Chicago, IL 60611, USA.
| | - William K Chang
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Callum D Dewar
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA 94720, USA; Division of Neurosurgery, Walter Reed National Military Medical Center, Bethesda, MD 20814, USA
| | | | - Jack J Lin
- Department of Neurology and Center for Mind and Brain, University of California, Davis, Davis, CA 95616, USA
| | - Anne-Kristin Solbakk
- Department of Neurosurgery, Division of Stereotactic and Functional Neurosurgery, Oslo University Hospital, Rikshospitalet, Oslo 0372, Norway; Department of Psychology, Faculty of Social Sciences, University of Oslo, Oslo 0373, Norway; RITMO Centre for Interdisciplinary Studies in Rhythm, Time and Motion, University of Oslo, Oslo 0373, Norway; Department of Neuropsychology, Helgeland Hospital, Mosjøen 8657, Norway
| | - Tor Endestad
- Department of Psychology, Faculty of Social Sciences, University of Oslo, Oslo 0373, Norway; RITMO Centre for Interdisciplinary Studies in Rhythm, Time and Motion, University of Oslo, Oslo 0373, Norway; Department of Neuropsychology, Helgeland Hospital, Mosjøen 8657, Norway
| | - Pal G Larsson
- Department of Neurosurgery, Division of Stereotactic and Functional Neurosurgery, Oslo University Hospital, Rikshospitalet, Oslo 0372, Norway; Department of Psychology, Faculty of Social Sciences, University of Oslo, Oslo 0373, Norway
| | - Jugoslav Ivanovic
- Department of Neurosurgery, Division of Stereotactic and Functional Neurosurgery, Oslo University Hospital, Rikshospitalet, Oslo 0372, Norway
| | - Torstein R Meling
- Department of Neurosurgery, Division of Stereotactic and Functional Neurosurgery, Oslo University Hospital, Rikshospitalet, Oslo 0372, Norway; Department of Psychology, Faculty of Social Sciences, University of Oslo, Oslo 0373, Norway; Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo 0373, Norway
| | - Donatella Scabini
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Robert T Knight
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA 94720, USA; Department of Psychology, University of California, Berkeley, Berkeley, CA 94720, USA
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18
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Brown J, Jonason A, Asp E, McGinn V, Carter MN, Spiller V, Jozan A. Fetal alcohol spectrum disorder and confabulation in psycholegal settings: A beginner's guide for criminal justice, forensic mental health, and legal interviewers. BEHAVIORAL SCIENCES & THE LAW 2022; 40:46-86. [PMID: 34689366 DOI: 10.1002/bsl.2540] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 09/30/2021] [Accepted: 10/03/2021] [Indexed: 06/13/2023]
Abstract
Fetal alcohol spectrum disorders (FASD) are neurodevelopmental/neurobehavioral conditions caused by prenatal alcohol exposure (PAE). Impairments caused by PAE contribute to the over-representation of individuals with FASD in the United States juvenile and adult criminal justice systems. These same impairments can equally impact on individuals with FASD who are witnesses to or victims of crime who also have to navigate the complexities of the criminal justice system. Difficulties include increased susceptibility to confabulation throughout the legal process that, in turn, can contribute to increased rates of poor outcomes including false confessions and wrongful convictions. Individuals with FASD are particularity at risk of confabulation when they are subjected to tactics, such as stressful and anxiety-provoking situations, threats, and leading, suggestive, or coercive questioning. Many professionals in the forensic context are unfamiliar with FASD or related confabulation risk and may unintentionally utilize tactics that intensify impacts of pre-existing impairment. This article serves as a beginner's guide for professionals working in criminal justice settings by (a) providing research-based overviews of FASD and confabulation, (b) describing how FASD may lead to confabulation, and (c) suggesting ways that professionals can modify protocols when interacting with individuals with FASD. Suggestions in this article hold the potential to decrease the risk of confabulation in the criminal justice system and decrease problematic outcomes, such as false confessions and wrongful convictions among individuals with FASD.
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Affiliation(s)
- Jerrod Brown
- Pathways Counseling Center, Inc., St. Paul, Minnesota, USA
- Concordia University, St. Paul, Minnesota, USA
- American Institute for the Advancement of Forensic Studies, St. Paul, Minnesota, USA
| | - Alec Jonason
- Department of Psychology, Hamline University, St. Paul, Minnesota, USA
- Wesley & Lorene Artz Cognitive Neuroscience Research Center, Hamline University, St. Paul, Minnesota, USA
| | - Erik Asp
- Department of Psychology, Hamline University, St. Paul, Minnesota, USA
- Wesley & Lorene Artz Cognitive Neuroscience Research Center, Hamline University, St. Paul, Minnesota, USA
- Department of Neurology, University of Iowa, Iowa City, Iowa, USA
| | - Valerie McGinn
- The FASD Centre, Auckland, New Zealand
- School of Population Health, The University of Auckland, Auckland, New Zealand
| | - Megan N Carter
- University of Washington, Seattle, Washington, USA
- Department of Social and Health Services, Special Commitment Center, Steilacoom, Washington, USA
| | | | - Amy Jozan
- American Institute for the Advancement of Forensic Studies, St. Paul, Minnesota, USA
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19
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Stendardi D, Biscotto F, Bertossi E, Ciaramelli E. Present and future self in memory: the role of vmPFC in the self-reference effect. Soc Cogn Affect Neurosci 2021; 16:1205-1213. [PMID: 34086968 PMCID: PMC8716844 DOI: 10.1093/scan/nsab071] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 05/11/2021] [Accepted: 06/04/2021] [Indexed: 11/13/2022] Open
Abstract
Self-related information is remembered better than other-related information (self-reference effect; SRE), a phenomenon that has been convincingly linked to the medial prefrontal cortex. It is not clear whether information related to our future self would also have a privileged status in memory, as medial prefrontal cortex (mPFC) regions respond less to the future than to the present self, as if it were an 'other'. Here we ask whether the integrity of the ventral mPFC (vmPFC) is necessary for the emergence of the present and future SRE, if any. vmPFC patients and brain-damaged and healthy controls judged whether each of a series of trait adjectives was descriptive of their present self, future self, another person and that person in the future and later recognized studied traits among distractors. Information relevant to the present (vs future) was generally recognized better, across groups. However, whereas healthy and brain-damaged controls exhibited strong present and future SREs, these were absent in vmPFC patients, who concomitantly showed reduced certainty about their own present and anticipated traits compared to the control groups. These findings indicate that vmPFC is necessary to impart a special mnemonic status to self-related information, including our envisioned future self, possibly by instantiating the self-schema.
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Affiliation(s)
- Debora Stendardi
- Department of Psychology, University of Bologna, Bologna 40126, Italy
| | - Francesca Biscotto
- Center for Studies and Research of Cognitive Neuroscience, Cesena 47521, Italy
| | - Elena Bertossi
- Center for Studies and Research of Cognitive Neuroscience, Cesena 47521, Italy
| | - Elisa Ciaramelli
- Department of Psychology, University of Bologna, Bologna 40126, Italy
- Center for Studies and Research of Cognitive Neuroscience, Cesena 47521, Italy
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20
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The Fornix May Play a Key Role in Korsakoff's Amnesia Secondary to Subcallosal Artery Infarction. Brain Sci 2021; 12:brainsci12010021. [PMID: 35053765 PMCID: PMC8773842 DOI: 10.3390/brainsci12010021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 12/22/2021] [Accepted: 12/22/2021] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Subcallosal artery infarction injures the fornix and anterior corpus callosum and sometimes causes Korsakoff's amnesia. We hypothesized that Korsakoff's amnesia might be caused by fornix dysfunction rather than anterior corpus callosum dysfunction in subcallosal artery infarction. METHODS A systematic review approach was applied to search PubMed and Google Scholar for articles to compare patients who had both bilateral fornix and corpus callosum infarction due to subcallosal artery territory ischemia (vascular event group; V group) with patients who had undergone anterior corpus callosotomy (callosotomy group; C group). RESULTS The V group comprised 10 patients (mean age, 63 years; median, 69 years; standard deviation (SD), 14.5 years; 5 males, 5 females). The C group comprised 6 patients (mean age, 23.7 years; median, 20 years; SD, 7.3 years; 3 males, 3 females). Six of 10 patients (60%) with subcallosal artery infarction exhibited Korsakoff's amnesia. One patient showed neither confabulation nor amnesia. Conversely, no amnesia episodes were seen in any patients from the C group (p = 0.034). CONCLUSION Fornix injury, rather than anterior corpus callosum injury, might be the major cause of Korsakoff's amnesia in patients with subcallosal artery infarction.
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21
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Dalla Barba G, Nogier B, Rogan C, Kalafat M, Gagliardi G, Houot M, La Corte V. Episodic memory false recognition for familiar information in Alzheimer's disease. J Clin Exp Neuropsychol 2021; 43:579-598. [PMID: 34713758 DOI: 10.1080/13803395.2021.1975655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Patients with Alzheimer's disease (AD) suffer from various types of memory distortions. We showed that confabulations are plausible memories, mainly reflecting the recall of repeated personal events mistakenly considered by confabulating patients as specific and unique events. The aim of this study is to see whether the notion that over-learned information interferes in episodic memory recall, as it does in confabulation, can be extended to another type of memory distortion, namely false recognition (i.e., a claim to recognize something that was not encountered previously). If this is the case, it should be expected that in an episodic recognition memory task AD patients produce more false recognition for well known non-studied, non to-be-remembered material than for unknown non-studied, non to-be-remembered material. In order to verify this prediction, AD patients and normal controls (NC) were administered two experiments. In Experiment 1, we presented pictures, of which half were supposed to be well known and the other half unknown monuments. For each picture, participants were asked to say whether or not the monument was known or not to them. Immediately following this semantic encoding task, participants were administered an episodic recognition memory task in which, in the same way as in the previous phase, among the non-studied items, half were supposed to be well known and the other half unknown. In Experiment 2 the same procedure was used employing well known and unknown symbols. It was predicted that AD patients make more false recognitions for non-studied well-known items than for non-studied unknown items. The results show that this is actually the case, suggesting that confusion between "uniqueness," i.e., specific unique events, and "multiplicity," i.e., repeated events, is also involved in false recognition.
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Affiliation(s)
- Gianfranco Dalla Barba
- INSERM, Paris, France.,Institut de la Mémoire et de la Maladie d'Alzheimer (IM2A), Département de Neurologie, Hôpital de la Pitié-Salpêtrière, Sorbonne Universités, Université Pierre et Marie Curie-Paris6, Paris, France.,Dipartimento di Scienze della Vita, Università degli Studi di Trieste, Trieste, Italy
| | - Barbara Nogier
- Centre de Recherche de l'Institut du Cerveau et de la Moelle Epinière, Inserm U975, Université Pierre et Marie Curie-Paris6, Paris, France
| | - Christina Rogan
- Institut de la Mémoire et de la Maladie d'Alzheimer (IM2A), Département de Neurologie, Hôpital de la Pitié-Salpêtrière, Sorbonne Universités, Université Pierre et Marie Curie-Paris6, Paris, France
| | - Michel Kalafat
- Institut de la Mémoire et de la Maladie d'Alzheimer (IM2A), Département de Neurologie, Hôpital de la Pitié-Salpêtrière, Sorbonne Universités, Université Pierre et Marie Curie-Paris6, Paris, France
| | - Geoffroy Gagliardi
- Institut de la Mémoire et de la Maladie d'Alzheimer (IM2A), Département de Neurologie, Hôpital de la Pitié-Salpêtrière, Sorbonne Universités, Université Pierre et Marie Curie-Paris6, Paris, France
| | - Marion Houot
- Institut de la Mémoire et de la Maladie d'Alzheimer (IM2A), Département de Neurologie, Hôpital de la Pitié-Salpêtrière, Sorbonne Universités, Université Pierre et Marie Curie-Paris6, Paris, France
| | - Valentina La Corte
- Institut de la Mémoire et de la Maladie d'Alzheimer (IM2A), Département de Neurologie, Hôpital de la Pitié-Salpêtrière, Sorbonne Universités, Université Pierre et Marie Curie-Paris6, Paris, France.,Institut de Psychologie, Université Paris Descartes, Sorbonne Paris Cité, Paris, France
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22
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McCormick C, Maguire EA. The distinct and overlapping brain networks supporting semantic and spatial constructive scene processing. Neuropsychologia 2021; 158:107912. [PMID: 34116069 PMCID: PMC8287593 DOI: 10.1016/j.neuropsychologia.2021.107912] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 05/20/2021] [Accepted: 06/04/2021] [Indexed: 11/17/2022]
Abstract
Scene imagery features prominently when we recall autobiographical memories, imagine the future and navigate around in the world. Consequently, in this study we sought to better understand how scene representations are supported by the brain. Processing scenes involves a variety of cognitive processes that in the real world are highly interactive. Here, however, our goal was to separate semantic and spatial constructive scene processes in order to identify the brain areas that were distinct to each process, those they had in common, and the connectivity between regions. To this end, participants searched for either semantic or spatial constructive impossibilities in scenes during functional MRI. We focussed our analyses on only those scenes that were possible, thus removing any error detection that would evoke reactions such as surprise or novelty. Importantly, we also counterbalanced possible scenes across participants, enabling us to examine brain activity and connectivity for the same possible scene images under two different conditions. We found that participants adopted different cognitive strategies, which were reflected in distinct oculomotor behaviour, for each condition. These were in turn associated with increased engagement of lateral temporal and parietal cortices for semantic scene processing, the hippocampus for spatial constructive scene processing, and increased activation of the ventromedial prefrontal cortex (vmPFC) that was common to both. Connectivity analyses showed that the vmPFC switched between semantic and spatial constructive brain networks depending on the task at hand. These findings further highlight the well-known semantic functions of lateral temporal areas, while providing additional support for the previously-asserted contribution of the hippocampus to scene construction, and recent suggestions that the vmPFC may play a key role in orchestrating scene processing.
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Affiliation(s)
- Cornelia McCormick
- Wellcome Centre for Human Neuroimaging, UCL Queen Square Institute of Neurology, University College London, London, WC1N 3AR, UK; Department of Neurodegenerative Diseases and Geriatric Psychiatry, University Hospital Bonn, Bonn, Germany
| | - Eleanor A Maguire
- Wellcome Centre for Human Neuroimaging, UCL Queen Square Institute of Neurology, University College London, London, WC1N 3AR, UK.
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Ciaramelli E, Anelli F, Frassinetti F. An asymmetry in past and future mental time travel following vmPFC damage. Soc Cogn Affect Neurosci 2021; 16:315-325. [PMID: 33382070 PMCID: PMC7943363 DOI: 10.1093/scan/nsaa163] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 11/16/2020] [Accepted: 12/02/2020] [Indexed: 12/14/2022] Open
Abstract
The role of ventromedial prefrontal cortex (vmPFC) in mental time travel toward the past and the future is debated. Here, patients with focal lesions to the vmPFC and brain-damaged and healthy controls mentally projected themselves to a past, present or future moment of subjective time (self-projection) and classified a series of events as past or future relative to the adopted temporal self-location (self-reference). We found that vmPFC patients were selectively impaired in projecting themselves to the future and in recognizing relative-future events. These findings indicate that vmPFC damage hinders the mental processing of and movement toward future events, pointing to a prominent, multifaceted role of vmPFC in future-oriented mental time travel.
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Affiliation(s)
- Elisa Ciaramelli
- Department of Psychology, University of Bologna, Bologna 40126, Italy
- Center for Studies and Research of Cognitive Neuroscience, Department of Psychology, University of Bologna, Cesena 47521, Italy
| | - Filomena Anelli
- Department of Psychology, University of Bologna, Bologna 40126, Italy
- Department of Surgical and Medical Sciences, “Magna Graecia” University of Catanzaro, Catanzaro 88100, Italy
| | - Francesca Frassinetti
- Department of Psychology, University of Bologna, Bologna 40126, Italy
- Istituti Clinici Scientifici Maugeri IRCCS, Operative Unit for Recovery and Functional Rehabilitation, Institute of Castel Goffredo, Mantova 46042, Italy
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24
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Monk AM, Barnes GR, Maguire EA. The Effect of Object Type on Building Scene Imagery-an MEG Study. Front Hum Neurosci 2020; 14:592175. [PMID: 33240069 PMCID: PMC7683518 DOI: 10.3389/fnhum.2020.592175] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 10/09/2020] [Indexed: 12/28/2022] Open
Abstract
Previous studies have reported that some objects evoke a sense of local three-dimensional space (space-defining; SD), while others do not (space-ambiguous; SA), despite being imagined or viewed in isolation devoid of a background context. Moreover, people show a strong preference for SD objects when given a choice of objects with which to mentally construct scene imagery. When deconstructing scenes, people retain significantly more SD objects than SA objects. It, therefore, seems that SD objects might enjoy a privileged role in scene construction. In the current study, we leveraged the high temporal resolution of magnetoencephalography (MEG) to compare the neural responses to SD and SA objects while they were being used to build imagined scene representations, as this has not been examined before using neuroimaging. On each trial, participants gradually built a scene image from three successive auditorily-presented object descriptions and an imagined 3D space. We then examined the neural dynamics associated with the points during scene construction when either SD or SA objects were being imagined. We found that SD objects elicited theta changes relative to SA objects in two brain regions, the right ventromedial prefrontal cortex (vmPFC) and the right superior temporal gyrus (STG). Furthermore, using dynamic causal modeling, we observed that the vmPFC drove STG activity. These findings may indicate that SD objects serve to activate schematic and conceptual knowledge in vmPFC and STG upon which scene representations are then built.
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Affiliation(s)
- Anna M Monk
- Wellcome Centre for Human Neuroimaging, UCL Queen Square Institute of Neurology, University College London, London, United Kingdom
| | - Gareth R Barnes
- Wellcome Centre for Human Neuroimaging, UCL Queen Square Institute of Neurology, University College London, London, United Kingdom
| | - Eleanor A Maguire
- Wellcome Centre for Human Neuroimaging, UCL Queen Square Institute of Neurology, University College London, London, United Kingdom
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25
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Parand L, Niu K, Yerstein O, Mendez MF. Fantastic Thinking and Frontal Cerebrovascular Disease. J Neuropsychiatry Clin Neurosci 2020; 32:201-203. [PMID: 31331214 DOI: 10.1176/appi.neuropsych.19040086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Leila Parand
- The Department of Neurology, David Geffen School of Medicine, University of California at Los Angeles (Parand, Yerstein, Mendez); the Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine, University of California at Los Angeles (Parand, Yerstein, Mendez); the V.A. Greater Los Angeles Healthcare System (Mendez); and the Neuropsychiatry Program, University of Massachusetts, Worcester, Mass (Niu)
| | - Kathy Niu
- The Department of Neurology, David Geffen School of Medicine, University of California at Los Angeles (Parand, Yerstein, Mendez); the Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine, University of California at Los Angeles (Parand, Yerstein, Mendez); the V.A. Greater Los Angeles Healthcare System (Mendez); and the Neuropsychiatry Program, University of Massachusetts, Worcester, Mass (Niu)
| | - Oleg Yerstein
- The Department of Neurology, David Geffen School of Medicine, University of California at Los Angeles (Parand, Yerstein, Mendez); the Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine, University of California at Los Angeles (Parand, Yerstein, Mendez); the V.A. Greater Los Angeles Healthcare System (Mendez); and the Neuropsychiatry Program, University of Massachusetts, Worcester, Mass (Niu)
| | - Mario F Mendez
- The Department of Neurology, David Geffen School of Medicine, University of California at Los Angeles (Parand, Yerstein, Mendez); the Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine, University of California at Los Angeles (Parand, Yerstein, Mendez); the V.A. Greater Los Angeles Healthcare System (Mendez); and the Neuropsychiatry Program, University of Massachusetts, Worcester, Mass (Niu)
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26
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Belli E, Nicoletti V, Radicchi C, Bonaccorsi J, Cintoli S, Ceravolo R, Tognoni G. Confabulations in Cases of Dementia: Atypical Early Sign of Alzheimer’s Disease or Misleading Feature in Dementia Diagnosis? Front Psychol 2020; 11:553886. [PMID: 33117224 PMCID: PMC7550794 DOI: 10.3389/fpsyg.2020.553886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 09/07/2020] [Indexed: 11/21/2022] Open
Abstract
Confabulations, also known as false memories, have been associated with various diseases involving mainly the frontal areas, such as Wernicke–Korsakoff syndrome or frontal epilepsy. The neuropsychological dysfunctions underlying mechanisms of confabulation are not well known. We describe two patients with memory impairment and confabulations at the onset speculating about neuropsychological correlates of confabulations and self-awareness. Both patients, a 77-year-old woman and a 57-years-old man, exhibited confabulations as first symptom of cognitive decline. She later developed memory impairment without awareness of her memory deficits and her cognitive and imaging profile suggested an amnesic mild cognitive impairment due to Alzheimer’s disease (AD). Unlike her, he developed a prevalent involvement of frontal functions despite a clear consciousness of his cognitive deficits. However, the clinical diagnostic hypothesis of behavioral variant of frontotemporal dementia was not supported by imaging findings, which suggested AD. Both patients underwent neuropsychological evaluation including the Confabulation Battery. Despite that the exact anatomical correlation of confabulations is still not defined, imaging data shown by our patients is consistent with recent theories according to which at the origin of confabulatory tendency in AD there is an impairment of the connections between crucial hubs in frontal and mediotemporal areas, mainly involving the right hemisphere. Besides, it would be reasonable to hypothesize that self-awareness and confabulations should not be considered as necessarily associated dimensions.
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Sekeres MJ, Moscovitch M, Winocur G, Pishdadian S, Nichol D, Grady CL. Reminders activate the prefrontal-medial temporal cortex and attenuate forgetting of event memory. Hippocampus 2020; 31:28-45. [PMID: 32965760 DOI: 10.1002/hipo.23260] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 08/06/2020] [Accepted: 08/21/2020] [Indexed: 01/03/2023]
Abstract
Replicas of an aspect of an experienced event can serve as effective reminders, yet little is known about the neural basis of such reminding effects. Here we examined the neural activity underlying the memory-enhancing effect of reminders 1 week after encoding of naturalistic film clip events. We used fMRI to determine differences in network activity associated with recently reactivated memories relative to comparably aged, non-reactivated memories. Reminders were effective in facilitating overall retrieval of memory for film clips, in an all-or-none fashion. Prefrontal cortex and hippocampus were activated during both reminders and retrieval. Peak activation in ventro-lateral prefrontal cortex (vPFC) preceded peak activation in the right hippocampus during the reminders. For film clips that were successfully retrieved after 7 days, pre-retrieval reminders did not enhance the quality of the retrieved memory or the number of details retrieved, nor did they more strongly engage regions of the recollection network than did successful retrieval of a non-reminded film clip. These results suggest that reminders prior to retrieval are an effective means of boosting retrieval of otherwise inaccessible episodic events, and that the inability to recall certain events after a delay of a week largely reflects a retrieval deficit, rather than a storage deficit for this information. The results extend other evidence that vPFC drives activation of the hippocampus to facilitate memory retrieval and scene construction, and show that this facilitation also occurs when reminder cues precede successful retrieval attempts. The time course of vPFC-hippocampal activity during the reminder suggests that reminders may first engage schematic information meditated by vPFC followed by a recollection process mediated by the hippocampus.
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Affiliation(s)
- Melanie J Sekeres
- School of Psychology, University of Ottawa, Ottawa, Ontario, Canada.,Rotman Research Institute, Baycrest, Toronto, Ontario, Canada
| | - Morris Moscovitch
- Rotman Research Institute, Baycrest, Toronto, Ontario, Canada.,Department of Psychology, Baycrest, Toronto, Ontario, Canada.,Department of Psychology, University of Toronto, Toronto, Ontario, Canada
| | - Gordon Winocur
- Rotman Research Institute, Baycrest, Toronto, Ontario, Canada.,Department of Psychology, University of Toronto, Toronto, Ontario, Canada.,Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada.,Department of Psychology, Trent University, Peterborough, Ontario, Canada
| | - Sara Pishdadian
- Rotman Research Institute, Baycrest, Toronto, Ontario, Canada.,Department of Psychology, York University, Toronto, Ontario, Canada
| | - Dan Nichol
- Rotman Research Institute, Baycrest, Toronto, Ontario, Canada
| | - Cheryl L Grady
- Rotman Research Institute, Baycrest, Toronto, Ontario, Canada.,Department of Psychology, University of Toronto, Toronto, Ontario, Canada.,Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada
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28
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Chapman S, Cosentino S, Igwe KC, Abdurahman A, Elkind MSV, Brickman AM, Charlton R, Cocchini G. Mnemonic monitoring in anosognosia for memory loss. Neuropsychology 2020; 34:675-685. [PMID: 32852998 DOI: 10.1037/neu0000643] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
OBJECTIVE Anosognosia, or unawareness, for memory loss has been proposed to underlie cognitive functions such as memory and executive function. However, there is an inconsistent association between these constructs. Recent studies have shown that compromise ongoing self-monitoring of one's memory associates with anosognosia for memory loss. Yet to date it is unclear which memory monitoring mechanisms are impaired in these patients. In this study, we examined the extent to which temporal monitoring or orbitofrontal reality filtering (e.g., ability to monitor the temporal relevance of a memory) and source monitoring (e.g., the ability to distinguish which memories stem from internal as opposed to external sources) are associated with awareness of memory deficits. METHOD A total of 35 patients (M = 69 years; M = 14 years of education) with memory difficulties following a stroke were recruited from outpatient clinics. Patients were assessed with measures of self-awareness of memory difficulties, cognitive abilities and 2 experimental paradigms assessing source and temporal monitoring. RESULTS AND CONCLUSION Results showed that patients unaware of their memory difficulties were more likely to externalize the source of their memories. Specifically, those unaware of their deficits were more likely to assign an external source to memories that were internally produced (e.g., imagined). No differences were observed in relation to temporal monitoring between patients aware and unaware of their deficits. This study informs current theoretical models of self-awareness of memory loss. Future studies should attempt to replicate these findings and explore different memory monitoring mechanisms in relation to anosognosia for memory loss. (PsycInfo Database Record (c) 2020 APA, all rights reserved).
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Affiliation(s)
- Silvia Chapman
- Department of Psychology, Goldsmiths University of London
| | - Stephanie Cosentino
- Cognitive Neuroscience Section of the Gertrude H. Sergievsky Center, Taub Institute for Research on Alzheimer's Disease and the Aging Brain, Columbia University
| | - Kay C Igwe
- Cognitive Neuroscience Section of the Gertrude H. Sergievsky Center, Taub Institute for Research on Alzheimer's Disease and the Aging Brain, Columbia University
| | | | - Mitchell S V Elkind
- Department of Neurology, Vagelos College of Physicians and Surgeons, Columbia University
| | - Adam M Brickman
- Cognitive Neuroscience Section of the Gertrude H. Sergievsky Center, Taub Institute for Research on Alzheimer's Disease and the Aging Brain, Columbia University
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Thome J, Terpou BA, McKinnon MC, Lanius RA. The neural correlates of trauma-related autobiographical memory in posttraumatic stress disorder: A meta-analysis. Depress Anxiety 2020; 37:321-345. [PMID: 31815346 DOI: 10.1002/da.22977] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 10/02/2019] [Accepted: 11/06/2019] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Autobiographical memory (AM) refers to memories of events that are personally relevant and are remembered from one's own past. The AM network is a distributed brain network comprised largely by prefrontal medial and posteromedial cortical brain regions, which together facilitate AM. Autobiographical memories with high arousal and negatively valenced emotional states are thought to be retrieved more readily and re-experienced more vividly. This is critical in the case of trauma-related AMs, which are related to altered phenomenological experiences as well as aberrations to the underlying neural systems in posttraumatic stress disorder (PTSD). Critically, these alterations to the AM network have not been explored recently and have never been analyzed with consideration to the different processes of AM, them being retrieval and re-experiencing. METHODS We conducted a series of effect-size signed differential mapping meta-analyses across twenty-eight studies investigating the neural correlates of trauma-related AMs in participants with PTSD as compared with controls. Studies included either trauma-related scripts or trauma-related materials (i.e., sounds, images, pictures) implemented to evoke the recollection of a trauma-related memory. RESULTS The meta-analyses revealed that control and PTSD participants displayed greater common brain activation of prefrontal medial and posteromedial cortices, respectively. Whereby the prefrontal medial cortices are suggested to facilitate retrieval monitoring, the posteromedial cortices are thought to enable the visual imagery processes of AM. CONCLUSIONS Taken together, reduced common activation of prefrontal cortices may be interpreted as a bias toward greater re-experiencing, where the more salient elements of the traumatic memory are relived as opposed to retrieved in a controlled manner in PTSD.
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Affiliation(s)
- Janine Thome
- Department of Psychiatry, Western University, London, Ontario, Canada.,Department of Theoretical Neuroscience, Central Institute of Mental Health Mannheim, Medical Faculty Mannheim, Heidelberg University, Heidelberg, Germany
| | - Braeden A Terpou
- Department of Neuroscience, Western University, London, Ontario, Canada
| | - Margaret C McKinnon
- Mood Disorders Program, St. Joseph's Healthcare, Hamilton, Ontario, Canada.,Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, Ontario, Canada.,Homewood Research Institute, Guelph, Ontario, Canada
| | - Ruth A Lanius
- Department of Psychiatry, Western University, London, Ontario, Canada.,Department of Neuroscience, Western University, London, Ontario, Canada
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30
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Barba GD, Brazzarola M, Marangoni S, Alderighi M. Confabulation affecting Temporal Consciousness significantly more than Knowing Consciousness. Neuropsychologia 2020; 140:107367. [PMID: 32007509 DOI: 10.1016/j.neuropsychologia.2020.107367] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 12/20/2019] [Accepted: 01/29/2020] [Indexed: 11/16/2022]
Abstract
Confabulation, defined as the production of statements and actions that are unintentionally incongruous to the patient's history, background, present and future situation, is a rather infrequent memory disorder, which usually affects patients with significant memory impairment, but may be also observed in patients with normal memory and learning abilities. Confabulation may be selective affecting some cognitive, memory domains while relatively sparing others. In particular, it may affect more Temporal Consciousness, i.e. a specific form of consciousness that allows individuals to remember their personal past, to be oriented in their present world and to predict their personal future, than Knowing Consciousness, i.e. a specific form of consciousness allowing individuals to be aware of past, present and future impersonal knowledge and information. In this study we evaluated confabulations in TC and KC in a group of confabulatory amnesics of various aetiologies. Based on previous studies, it was predicted that confabulations affect significantly more TC than KC. It was also predicted that "Habits Confabulations", i.e. habits and repeated personal events mistaken as specific, unique past and future personal episodes, is the more frequently observed type of confabulation. The results confirmed these predictions and are discussed within the framework of the Memory, Consciousness and Temporality Theory.
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Affiliation(s)
- Gianfranco Dalla Barba
- INSERM, Paris, France; Institut de la Mémoire et de la Maladie d'Alzheimer (IM2A), Département de Neurologie, Hôpital de la Pitié-Salpêtrière, Sorbonne Universités, Université Pierre et Marie Curie, Paris6, Paris, France; Dipartimento di Scienze Della Vita, Università Degli Studi di Trieste, Italy; Centro Medico di Foniatria, Unità Operativa Complessa di Riabilitazione Neurocognitiva, Padova, Italy.
| | - Marta Brazzarola
- Centro Medico di Foniatria, Unità Operativa Complessa di Riabilitazione Neurocognitiva, Padova, Italy.
| | - Sara Marangoni
- Centro Medico di Foniatria, Unità Operativa Complessa di Riabilitazione Neurocognitiva, Padova, Italy.
| | - Marzia Alderighi
- Centro Medico di Foniatria, Unità Operativa Complessa di Riabilitazione Neurocognitiva, Padova, Italy.
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31
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Yu LQ, Kan IP, Kable JW. Beyond a rod through the skull: A systematic review of lesion studies of the human ventromedial frontal lobe. Cogn Neuropsychol 2019; 37:97-141. [PMID: 31739752 DOI: 10.1080/02643294.2019.1690981] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Neuropsychological studies from the past century have associated damage to the ventromedial frontal lobes (VMF) with impairments in a variety of domains, including memory, executive function, emotion, social cognition, and valuation. A central question in the literature is whether these seemingly distinct functions are subserved by different sub-regions within the VMF, or whether VMF supports a broader cognitive process that is crucial to these varied domains. In this comprehensive review of the neuropsychological literature from the last two decades, we present a qualitative synthesis of 184 papers that have examined the psychological impairments that result from VMF damage. We discuss these findings in the context of several theoretical frameworks and advocate for the view that VMF is critical for the formation and representation of schema and cognitive maps.
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Affiliation(s)
- Linda Q Yu
- Department of Psychology, University of Pennsylvania, Philadelphia, PA, USA.,Carney Institute for Brain Science, Brown University, Providence, RI, USA
| | - Irene P Kan
- Department of Psychological & Brain Sciences, Villanova University, Villanova, PA, USA
| | - Joseph W Kable
- Department of Psychology, University of Pennsylvania, Philadelphia, PA, USA
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32
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Abstract
OBJECTIVES In this paper, I review three 'anomalies' or disorders in autobiographical memory: neurological retrograde amnesia (RA), spontaneous confabulation, and psychogenic amnesia. METHODS Existing theories are reviewed, their limitations considered, some of my own empirical findings briefly described, and possible interpretations proposed and interspersed with illustrative case-reports. RESULTS In RA, there may be an important retrieval component to the deficit, and factors at encoding may give rise to the relative preservation of early memories (and the reminiscence bump) which manifests as a temporal gradient. Spontaneous confabulation appears to be associated with a damaged 'filter' in orbitofrontal and ventromedial frontal regions. Consistent with this, an empirical study has shown that both the initial severity of confabulation and its subsequent decline are associated with changes in the executive function (especially in cognitive estimate errors) and inversely with the quantity of accurate autobiographical memories retrieved. Psychogenic amnesia can be 'global' or 'situation-specific'. The former is associated with a precipitating stress, depressed mood, and (often) a past history of a transient neurological amnesia. In these circumstances, frontal control mechanisms can inhibit retrieval of autobiographical memories, and even the sense of 'self' (identity), while compromised medial temporal function prevents subsequent retrieval of what occurred during a 'fugue'. An empirical investigation of psychogenic amnesia and some recent imaging studies have provided findings consistent with this view. CONCLUSIONS Taken together, these various observations point to the importance of frontal 'control' systems (in interaction with medial temporal/hippocampal systems) in the retrieval and, more particularly, the disrupted retrieval of 'old' memories.
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33
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Sekeres MJ, Winocur G, Moscovitch M, Anderson JAE, Pishdadian S, Martin Wojtowicz J, St-Laurent M, McAndrews MP, Grady CL. Changes in patterns of neural activity underlie a time-dependent transformation of memory in rats and humans. Hippocampus 2019; 28:745-764. [PMID: 29989271 DOI: 10.1002/hipo.23009] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 06/25/2018] [Accepted: 06/29/2018] [Indexed: 11/06/2022]
Abstract
The dynamic process of memory consolidation involves a reorganization of brain regions that support a memory trace over time, but exactly how the network reorganizes as the memory changes remains unclear. We present novel converging evidence from studies of animals (rats) and humans for the time-dependent reorganization and transformation of different types of memory as measured both by behavior and brain activation. We find that context-specific memories in rats, and naturalistic episodic memories in humans, lose precision over time and activity in the hippocampus decreases. If, however, the retrieved memories retain contextual or perceptual detail, the hippocampus is engaged similarly at recent and remote timepoints. As the interval between the timepoint increases, the medial prefrontal cortex is engaged increasingly during memory retrieval, regardless of the context or the amount of retrieved detail. Moreover, these hippocampal-frontal shifts are accompanied by corresponding changes in a network of cortical structures mediating perceptually-detailed as well as less precise, schematic memories. These findings provide cross-species evidence for the crucial interplay between hippocampus and neocortex that reflects changes in memory representation over time and underlies systems consolidation.
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Affiliation(s)
- Melanie J Sekeres
- Rotman Research Institute, Toronto, Ontario, Canada.,Department of Psychology and Neuroscience, Department of Biology, Baylor University, Waco, Texas.,Department of Psychology, University of Toronto, Toronto, Ontario, Canada
| | - Gordon Winocur
- Rotman Research Institute, Toronto, Ontario, Canada.,Department of Psychology, University of Toronto, Toronto, Ontario, Canada.,Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada.,Department of Psychology, Trent University, Peterborough, Ontario, Canada
| | - Morris Moscovitch
- Rotman Research Institute, Toronto, Ontario, Canada.,Department of Psychology, University of Toronto, Toronto, Ontario, Canada.,Department of Psychology, Baycrest, Toronto, Ontario, Canada
| | - John A E Anderson
- Rotman Research Institute, Toronto, Ontario, Canada.,Department of Psychology, University of Toronto, Toronto, Ontario, Canada.,Department of Psychology, York University, Toronto, Ontario, Canada
| | - Sara Pishdadian
- Department of Psychology, University of Toronto, Toronto, Ontario, Canada.,Department of Psychology, York University, Toronto, Ontario, Canada
| | - J Martin Wojtowicz
- Department of Physiology, University of Toronto, Toronto, Ontario, Canada
| | | | - Mary Pat McAndrews
- Department of Psychology, University of Toronto, Toronto, Ontario, Canada.,Krembil Research Institute, University Health Network, Toronto, Ontario, Canada
| | - Cheryl L Grady
- Rotman Research Institute, Toronto, Ontario, Canada.,Department of Psychology, University of Toronto, Toronto, Ontario, Canada.,Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada
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34
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Frontolimbic affective bias and false narratives from brain disease. Med Hypotheses 2019; 128:13-16. [PMID: 31203901 DOI: 10.1016/j.mehy.2019.04.020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Accepted: 04/28/2019] [Indexed: 11/23/2022]
Abstract
Since the nineteenth century, clinicians and investigators have systematically evaluated the origin of delusions and psychotic thinking. One major clue to understanding the neurobiological underpinnings of delusions is the emergence of false narratives from brain disease. In addition to delusions themselves, there are a range of other false narratives not due to deliberate lying and resulting from neurological disorders, including provoked confabulations, fantastic confabulations, false memories, magical thinking, dream delusions, and "fantastic thinking". A comparison of their characteristics, similarities, and differences suggest a hypothesis: despite different sources for their false narrative experiences, such as unusual thoughts or perceptions, all false narratives from brain disease involve erroneous or mismatched "affective biases" applied to the experiences. Affective labels usually signal the sense of rightness, sense of familiarity, and the external vs. internal origin of an experience, and they can be altered by limbic neuropathology. The location and involvement of neuropathology that facilitates false narratives involves frontolimbic regions and their connections, particularly on the right. Future investigations can focus on frontolimbic mechanisms involved in the provision of the intrinsically-linked affective biases, which indicate the nature and external/internal origin of experiences.
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35
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The Neural Dynamics of Novel Scene Imagery. J Neurosci 2019; 39:4375-4386. [PMID: 30902867 PMCID: PMC6538850 DOI: 10.1523/jneurosci.2497-18.2019] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 03/06/2019] [Accepted: 03/07/2019] [Indexed: 12/16/2022] Open
Abstract
Retrieval of long-term episodic memories is characterized by synchronized neural activity between hippocampus and ventromedial prefrontal cortex (vmPFC), with additional evidence that vmPFC activity leads that of the hippocampus. It has been proposed that the mental generation of scene imagery is a crucial component of episodic memory processing. If this is the case, then a comparable interaction between the two brain regions should exist during the construction of novel scene imagery. To address this question, we leveraged the high temporal resolution of MEG to investigate the construction of novel mental imagery. We tasked male and female humans with imagining scenes and single isolated objects in response to one-word cues. We performed source-level power, coherence, and causality analyses to characterize the underlying interregional interactions. Both scene and object imagination resulted in theta power changes in the anterior hippocampus. However, higher theta coherence was observed between the hippocampus and vmPFC in the scene compared with the object condition. This interregional theta coherence also predicted whether imagined scenes were subsequently remembered. Dynamic causal modeling of this interaction revealed that vmPFC drove activity in hippocampus during novel scene construction. Additionally, theta power changes in the vmPFC preceded those observed in the hippocampus. These results constitute the first evidence in humans that episodic memory retrieval and scene imagination rely on similar vmPFC–hippocampus neural dynamics. Furthermore, they provide support for theories emphasizing similarities between both cognitive processes and perspectives that propose the vmPFC guides the construction of context-relevant representations in the hippocampus. SIGNIFICANCE STATEMENT Episodic memory retrieval is characterized by a dialog between hippocampus and ventromedial prefrontal cortex (vmPFC). It has been proposed that the mental generation of scene imagery is a crucial component of episodic memory processing. An ensuing prediction would be of a comparable interaction between the two brain regions during the construction of novel scene imagery. Here, we leveraged the high temporal resolution of MEG and combined it with a scene imagination task. We found that a hippocampal–vmPFC dialog existed and that it took the form of vmPFC driving the hippocampus. We conclude that episodic memory and scene imagination share fundamental neural dynamics and the process of constructing vivid, spatially coherent, contextually appropriate scene imagery is strongly modulated by vmPFC.
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36
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Barry DN, Maguire EA. Remote Memory and the Hippocampus: A Constructive Critique. Trends Cogn Sci 2019; 23:128-142. [PMID: 30528612 DOI: 10.1016/j.tics.2018.11.005] [Citation(s) in RCA: 96] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 11/04/2018] [Accepted: 11/14/2018] [Indexed: 12/23/2022]
Abstract
The hippocampus is known to be recruited during the recall of experiences from our distant past, despite evidence that memory traces in this region vanish over time. Extant theories of systems-level consolidation have yet to accommodate both phenomena. We propose that the hippocampus reconstructs remote memories in the absence of the original trace. It accomplishes this by assembling consolidated neocortical elements into spatially coherent scenes that form the basis of unfolding memory events. This reconstruction is likely facilitated by input from the ventromedial prefrontal cortex. This process-oriented approach to hippocampal recruitment during remote recollection is consistent with its increasingly acknowledged role in constructing mental representations beyond the domain of memory.
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Affiliation(s)
- Daniel N Barry
- Wellcome Centre for Human Neuroimaging, Queen Square Institute of Neurology, University College London, 12 Queen Square, London WC1N 3AR, UK
| | - Eleanor A Maguire
- Wellcome Centre for Human Neuroimaging, Queen Square Institute of Neurology, University College London, 12 Queen Square, London WC1N 3AR, UK.
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37
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Lieberman MD, Straccia MA, Meyer ML, Du M, Tan KM. Social, self, (situational), and affective processes in medial prefrontal cortex (MPFC): Causal, multivariate, and reverse inference evidence. Neurosci Biobehav Rev 2019; 99:311-328. [PMID: 30610911 DOI: 10.1016/j.neubiorev.2018.12.021] [Citation(s) in RCA: 131] [Impact Index Per Article: 26.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 11/20/2018] [Accepted: 12/18/2018] [Indexed: 12/13/2022]
Abstract
The medial prefrontal cortex (MPFC) has been posited to serve a variety of social, affective, and cognitive functions. These conclusions have largely been driven by forward inference analyses (e.g. GLM fMRI studies and meta-analyses) that indicate where domain-specific tasks tend to produce activity but tell us little about what those regions do. Here, we take a multi-method, multi-domain approach to the functionality of MPFC subdivisions within Brodmann areas 9-11. We consider four methods that each have reverse inference or causal inference value: lesion work, transcranial magnetic stimulation, multivariate pattern analysis, and Neurosynth analyses. The Neurosynth analyses include multi-term reverse inference analyses that compare several domains of interest to one another at once. We examine the evidence supporting structure-function links in five domains: social cognition, self, value, emotional experience, and mental time travel. The evidence is considered for each of three MPFC subdivisions: dorsomedial prefrontal cortex (DMPFC), anteromedial prefrontal cortex (AMPFC), and ventromedial prefrontal cortex (VMPFC). Although there is evidentiary variability across methods, the results suggest that social processes are functionally linked to DMPFC (and somewhat surprisingly in VMPFC), self processes are linked to AMPFC, and affective processes are linked to AMPFC and VMPFC. There is also a relatively non-selective region of VMPFC that may support situational processing, a process key to each domain, but also independent of each.
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Affiliation(s)
- Matthew D Lieberman
- UCLA Psychology Department, 1248 Franz Hall, Los Angeles, CA, 90095-1563, United States.
| | - Mark A Straccia
- UCLA Psychology Department, 1248 Franz Hall, Los Angeles, CA, 90095-1563, United States
| | - Meghan L Meyer
- Department of Psychological and Brain Sciences, Dartmouth College, Hanover, NH 03755, USA
| | - Meng Du
- UCLA Psychology Department, 1248 Franz Hall, Los Angeles, CA, 90095-1563, United States
| | - Kevin M Tan
- UCLA Psychology Department, 1248 Franz Hall, Los Angeles, CA, 90095-1563, United States
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38
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Blumenfeld RS, Ranganath C. The lateral prefrontal cortex and human long-term memory. HANDBOOK OF CLINICAL NEUROLOGY 2019; 163:221-235. [PMID: 31590732 DOI: 10.1016/b978-0-12-804281-6.00012-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Recent research has demonstrated that the lateral prefrontal cortex is extensively involved in human memory, including working memory processes that support retention of information across short delays, and episodic long-term memory encoding and retrieval processes. This chapter reviews results from neuroimaging studies of memory, from noninvasive brain stimulation studies of memory, and from studies of memory in patients with prefrontal lesions. The available evidence is consistent with the idea that different prefrontal regions implement cognitive or executive control processes that support working memory and episodic long-term memory encoding and retrieval.
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Affiliation(s)
- Robert S Blumenfeld
- Department of Psychology, California State Polytechnic University, Pomona, CA, United States
| | - Charan Ranganath
- Center for Neuroscience, Department of Psychology, University of California Davis, Davis, CA, United States.
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39
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Heirene R, John B, Roderique-Davies G. Identification and Evaluation of Neuropsychological Tools Used in the Assessment of Alcohol-Related Cognitive Impairment: A Systematic Review. Front Psychol 2018; 9:2618. [PMID: 30619013 PMCID: PMC6305333 DOI: 10.3389/fpsyg.2018.02618] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Accepted: 12/05/2018] [Indexed: 12/27/2022] Open
Abstract
Background: Neuropsychological assessment is central to identifying and determining the extent of Alcohol-Related Cognitive Impairment (ARCI). The present systematic review aimed to synthesize and discuss the evidence appraising the neuropsychological tests used to assess ARCI in order to support clinicians and researchers in selecting appropriate tests for use with this population. Methods: We searched for studies investigating the psychometric, diagnostic and practical values of tools used in the screening, diagnosis, and assessment of Korsakoff's Syndrome (KS), Alcohol-Related Dementia (ARD), and those with a specific diagnosis of Alcohol-Related Brain Damage (ARBD). The following databases were searched in March 2016 and again in August 2018: MEDLINE, EMBASE, Psych-INFO, ProQuest Psychology, and Science Direct. Study quality was assessed using a checklist designed by the authors to evaluate the specific factors contributing to robust and clearly reported studies in this area. A total of 43 studies were included following the screening of 3646 studies by title and abstract and 360 at full-text. Meta-analysis was not appropriate due to heterogeneity in the tests and ARCI samples investigated in the studies reviewed. Instead, review findings were narratively synthesized and divided according to five domains of assessment: cognitive screening, memory, executive function, intelligence and test batteries, and premorbid ability. Effect sizes (d) were calculated to supplement findings. Results: Overall, several measures demonstrated sensitivity to the cognitive deficits associated with chronic alcoholism and an ability to differentiate between gradations of impairment. However, findings relating to the other psychometric qualities of the tests, including those important for the accurate assessment and monitoring of ARCI (e.g., test-retest reliability), were entirely absent or limited. Additionally, the synthesis of neuropsychological outcomes presented here supports the recent impetus for a move away from discrete diagnoses (e.g., KS, ARD) and the distinctions between them toward more broad and inclusive diagnostic conceptualizations of ARCI, thereby recognizing the heterogeneity in presentation. Conclusions: Based on the evidence reviewed, provisional recommendations for appropriate tests in each domain of assessment are presented, though further validation of most tests is warranted. Review findings can support efficient and evidenced-based test-selection and guide future research in this area.
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Affiliation(s)
- Robert Heirene
- Addictions Research Group, University of South Wales, School of Psychology & Therapeutic Studies, Pontypridd, United Kingdom
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40
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De Luca F, McCormick C, Mullally SL, Intraub H, Maguire EA, Ciaramelli E. Boundary extension is attenuated in patients with ventromedial prefrontal cortex damage. Cortex 2018; 108:1-12. [PMID: 30086391 PMCID: PMC6238077 DOI: 10.1016/j.cortex.2018.07.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 06/12/2018] [Accepted: 07/06/2018] [Indexed: 01/19/2023]
Abstract
The ventromedial prefrontal cortex (vmPFC) and hippocampus have been implicated in the mental construction of scenes and events. However, little is known about their specific contributions to these cognitive functions. Boundary extension (BE) is a robust indicator of fast, automatic, and implicit scene construction. BE occurs when individuals who are viewing scenes automatically imagine what might be beyond the view, and consequently later misremember having seen a greater expanse of the scene. Patients with hippocampal damage show attenuated BE because of their scene construction impairment. In the current study, we administered BE tasks to patients with vmPFC damage, brain-damaged control patients, and healthy control participants. We also contrasted the performance of these patients to the previously-published data from patients with hippocampal lesions (Mullally, Intraub, & Maguire, 2012). We found that vmPFC-damaged patients showed reduced BE compared to brain-damaged and healthy controls. Indeed, BE attenuation was similar following vmPFC or hippocampal damage. Notably, however, whereas hippocampal damage seems to particularly impair the spatial coherence of scenes, vmPFC damage leads to a difficulty constructing scenes in a broader sense, with the prediction of what should be in a scene, and the monitoring or integration of the scene elements being particularly compromised. We conclude that vmPFC and hippocampus play important and complementary roles in scene construction.
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Affiliation(s)
- Flavia De Luca
- Dipartimento di Psicologia and Centro studi e ricerche di Neuroscienze Cognitive, Università di Bologna, Bologna, Italy
| | - Cornelia McCormick
- Wellcome Centre for Human Neuroimaging, Institute of Neurology, University College London, London, UK
| | | | - Helene Intraub
- Department of Psychological and Brain Sciences, University of Delaware, Newark, USA
| | - Eleanor A Maguire
- Wellcome Centre for Human Neuroimaging, Institute of Neurology, University College London, London, UK
| | - Elisa Ciaramelli
- Dipartimento di Psicologia and Centro studi e ricerche di Neuroscienze Cognitive, Università di Bologna, Bologna, Italy.
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41
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Fandakova Y, Bunge SA, Wendelken C, Desautels P, Hunter L, Lee JK, Ghetti S. The Importance of Knowing When You Don't Remember: Neural Signaling of Retrieval Failure Predicts Memory Improvement Over Time. Cereb Cortex 2018. [PMID: 28637289 DOI: 10.1093/cercor/bhw352] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Just as the ability to remember prior events is critical for guiding our decision-making, so too is the ability to recognize the limitations of our memory. Indeed, we hypothesize that neural signaling of retrieval failure promotes more accurate memory judgments over time. To test this hypothesis, we collected longitudinal functional magnetic resonance imaging data from 8 to 9 years olds, 10 to 12 years olds, and adults, with two time points spaced approximately 1.4 years apart (198 scan sessions in total). Participants performed an episodic memory retrieval task in which they could either select a response or report uncertainty about the target memory detail. Children who engaged anterior insula more strongly during inaccurate or uncertain responses exhibited greater longitudinal increases in anterior prefrontal cortex activation for decisions to report uncertainty; both of these neural variables predicted improvements in episodic memory. Together, the results suggest that the brain processes supporting effective cognitive control and decision-making continue to develop in middle childhood and play an important role for memory development.
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Affiliation(s)
- Yana Fandakova
- Center for Mind and Brain, University of California, Davis, CA 95616, USA.,Helen Wills Neuroscience Institute, University of California, Berkeley, CA 94720, USA
| | - Silvia A Bunge
- Helen Wills Neuroscience Institute, University of California, Berkeley, CA 94720, USA.,Department of Psychology, University of California, Berkeley, CA 94720, USA
| | - Carter Wendelken
- Helen Wills Neuroscience Institute, University of California, Berkeley, CA 94720, USA
| | - Peter Desautels
- Center for Mind and Brain, University of California, Davis, CA 95616, USA
| | - Lauren Hunter
- Center for Mind and Brain, University of California, Davis, CA 95616, USA
| | - Joshua K Lee
- Center for Mind and Brain, University of California, Davis, CA 95616, USA.,Department of Psychology, University of California, Davis, CA 95616, USA
| | - Simona Ghetti
- Center for Mind and Brain, University of California, Davis, CA 95616, USA.,Department of Psychology, University of California, Davis, CA 95616, USA
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42
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Azevedo Kauppila L, Nascimento Alves P, Reimão S, Fonseca AC, Pinho E Melo T, Martins IP. Memory impairment due to bilateral fornix infarction: Characterisation and follow-up. J Neurol Sci 2018; 390:10-13. [PMID: 29801866 DOI: 10.1016/j.jns.2018.03.034] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 03/06/2018] [Accepted: 03/27/2018] [Indexed: 10/17/2022]
Affiliation(s)
- Linda Azevedo Kauppila
- Stroke Unit, Neurology, Department of Neurosciences and Mental Health, Hospital de Santa Maria, CHLN, Lisbon.
| | - Pedro Nascimento Alves
- Stroke Unit, Neurology, Department of Neurosciences and Mental Health, Hospital de Santa Maria, CHLN, Lisbon; Language Research Laboratory, Faculty of Medicine, University of Lisbon
| | - Sofia Reimão
- Neuroradiology Department, Hospital Santa Maria, CHLN, Lisbon
| | - Ana Catarina Fonseca
- Stroke Unit, Neurology, Department of Neurosciences and Mental Health, Hospital de Santa Maria, CHLN, Lisbon
| | - Teresa Pinho E Melo
- Stroke Unit, Neurology, Department of Neurosciences and Mental Health, Hospital de Santa Maria, CHLN, Lisbon
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43
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McCormick C, Ciaramelli E, De Luca F, Maguire EA. Comparing and Contrasting the Cognitive Effects of Hippocampal and Ventromedial Prefrontal Cortex Damage: A Review of Human Lesion Studies. Neuroscience 2018; 374:295-318. [PMID: 28827088 PMCID: PMC6053620 DOI: 10.1016/j.neuroscience.2017.07.066] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Revised: 07/24/2017] [Accepted: 07/28/2017] [Indexed: 01/10/2023]
Abstract
The hippocampus and ventromedial prefrontal cortex (vmPFC) are closely connected brain regions whose functions are still debated. In order to offer a fresh perspective on understanding the contributions of these two brain regions to cognition, in this review we considered cognitive tasks that usually elicit deficits in hippocampal-damaged patients (e.g., autobiographical memory retrieval), and examined the performance of vmPFC-lesioned patients on these tasks. We then took cognitive tasks where performance is typically compromised following vmPFC damage (e.g., decision making), and looked at how these are affected by hippocampal lesions. Three salient motifs emerged. First, there are surprising gaps in our knowledge about how hippocampal and vmPFC patients perform on tasks typically associated with the other group. Second, while hippocampal or vmPFC damage seems to adversely affect performance on so-called hippocampal tasks, the performance of hippocampal and vmPFC patients clearly diverges on classic vmPFC tasks. Third, although performance appears analogous on hippocampal tasks, on closer inspection, there are significant disparities between hippocampal and vmPFC patients. Based on these findings, we suggest a tentative hierarchical model to explain the functions of the hippocampus and vmPFC. We propose that the vmPFC initiates the construction of mental scenes by coordinating the curation of relevant elements from neocortical areas, which are then funneled into the hippocampus to build a scene. The vmPFC then engages in iterative re-initiation via feedback loops with neocortex and hippocampus to facilitate the flow and integration of the multiple scenes that comprise the coherent unfolding of an extended mental event.
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Affiliation(s)
- Cornelia McCormick
- Wellcome Trust Centre for Neuroimaging, Institute of Neurology, University College London, 12 Queen Square, London WC1N 3BG, UK
| | - Elisa Ciaramelli
- Dipartimento di Psicologia, Università di Bologna, Bologna, Italy; Centro studi e ricerche di Neuroscienze Cognitive, Cesena, Italy
| | - Flavia De Luca
- Dipartimento di Psicologia, Università di Bologna, Bologna, Italy; Centro studi e ricerche di Neuroscienze Cognitive, Cesena, Italy
| | - Eleanor A Maguire
- Wellcome Trust Centre for Neuroimaging, Institute of Neurology, University College London, 12 Queen Square, London WC1N 3BG, UK.
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44
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Bonnici HM, Maguire EA. Two years later - Revisiting autobiographical memory representations in vmPFC and hippocampus. Neuropsychologia 2018; 110:159-169. [PMID: 28502632 PMCID: PMC5825381 DOI: 10.1016/j.neuropsychologia.2017.05.014] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Revised: 05/09/2017] [Accepted: 05/11/2017] [Indexed: 11/04/2022]
Abstract
A long-standing question in memory neuroscience concerns how and where autobiographical memories of personal experiences are represented in the brain. In a previous high resolution multivoxel pattern analysis fMRI study, we examined two week old (recent) and ten year old (remote) autobiographical memories (Bonnici et al., 2012, J. Neurosci. 32:16982-16991). We found that remote memories were particularly well represented in ventromedial prefrontal cortex (vmPFC) compared to recent memories. Moreover, while both types of memory were represented within anterior and posterior hippocampus, remote memories were more easily distinguished in the posterior portion. These findings suggested that a change of some kind had occurred between two weeks and ten years in terms of where autobiographical memories were represented in the brain. In order to examine this further, here participants from the original study returned two years later and recalled the memories again. We found that there was no difference in the detectability of memory representations within vmPFC for the now 2 year old and 12 year old memories, and this was also the case for the posterior hippocampus. Direct comparison of the two week old memories (original study) with themselves two years later (present study) confirmed that their representation within vmPFC had become more evident. Overall, this within-subjects longitudinal fMRI study extends our understanding of autobiographical memory representations by allowing us to narrow the window within which their consolidation is likely to occur. We conclude that after a memory is initially encoded, its representation within vmPFC has stablised by, at most, two years later.
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Affiliation(s)
- Heidi M Bonnici
- School of Psychology, University of East Anglia, Norwich NR4 7TJ, UK
| | - Eleanor A Maguire
- Wellcome Trust Centre for Neuroimaging, Institute of Neurology, University College London, 12 Queen Square, London WC1N 3BG, UK.
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45
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Abraham A. The imaginative mind. Hum Brain Mapp 2018; 37:4197-4211. [PMID: 27453527 DOI: 10.1002/hbm.23300] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Revised: 05/31/2016] [Accepted: 06/20/2016] [Indexed: 01/04/2023] Open
Abstract
The astounding capacity for the human imagination to be engaged across a wide range of contexts is limitless and fundamental to our day-to-day experiences. Although processes of imagination are central to human psychological function, they rarely occupy center stage in academic discourse or empirical study within psychological and neuroscientific realms. The aim of this paper is to tackle this imbalance by drawing together the multitudinous facets of imagination within a common framework. The processes fall into one of five categories depending on whether they are characterized as involving perceptual/motor related mental imagery, intentionality or recollective processing, novel combinatorial or generative processing, exceptional phenomenology in the aesthetic response, or altered psychological states which range from commonplace to dysfunctional. These proposed categories are defined on the basis of theoretical ideas from philosophy as well as empirical evidence from neuroscience. By synthesizing the findings across these domains of imagination, this novel five-part or quinquepartite classification of the human imagination aids in systematizing, and thereby abets, our understanding of the workings and neural foundations of the human imagination. It would serve as a blueprint to direct further advances in the field of imagination while also promoting crosstalk with reference to stimulus-oriented facets of information processing. A biologically and ecologically valid psychology is one that seeks to explain fundamental aspects of human nature. Given the ubiquitous nature of the imaginative operations in our daily lives, there can be little doubt that these quintessential aspects of the mind should be central to the discussion. Hum Brain Mapp 37:4197-4211, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Anna Abraham
- School of Social Sciences, Leeds Beckett University, Leeds, LS1 3HE, United Kingdom.
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46
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Fish J, Forrester J. Developing awareness of confabulation through psychological formulation: A case report and first-person perspective. Neuropsychol Rehabil 2017; 28:277-292. [DOI: 10.1080/09602011.2017.1397031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Jessica Fish
- The Oliver Zangwill Centre for Neuropsychological Rehabilitation, Cambridgeshire Community Services NHS Trust, Ely, UK
- Department of Psychology, King’s College London, Institute of Psychiatry, Psychology & Neuroscience, London, UK
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47
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Bernecker S. A Causal Theory of Mnemonic Confabulation. Front Psychol 2017; 8:1207. [PMID: 28769847 PMCID: PMC5513960 DOI: 10.3389/fpsyg.2017.01207] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Accepted: 07/03/2017] [Indexed: 12/03/2022] Open
Abstract
This paper attempts to answer the question of what defines mnemonic confabulation vis-à-vis genuine memory. The two extant accounts of mnemonic confabulation as “false memory” and as ill-grounded memory are shown to be problematic, for they cannot account for the possibility of veridical confabulation, ill-grounded memory, and well-grounded confabulation. This paper argues that the defining characteristic of mnemonic confabulation is that it lacks the appropriate causal history. In the confabulation case, there is no proper counterfactual dependence of the state of seeming to remember on the corresponding past representation.
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Affiliation(s)
- Sven Bernecker
- Department of Philosophy, University of California, IrvineIrvine, CA, United States.,Department of Philosophy, University of CologneCologne, Germany
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48
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Cansino S, Trejo-Morales P, Estrada-Manilla C, Pasaye-Alcaraz EH, Aguilar-Castañeda E, Salgado-Lujambio P, Sosa-Ortiz AL. Effective connectivity during successful and unsuccessful recollection in young and old adults. Neuropsychologia 2017; 103:168-182. [DOI: 10.1016/j.neuropsychologia.2017.07.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Revised: 06/27/2017] [Accepted: 07/14/2017] [Indexed: 12/11/2022]
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49
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Monge ZA, Wing EA, Stokes J, Cabeza R. Search and recovery of autobiographical and laboratory memories: Shared and distinct neural components. Neuropsychologia 2017; 110:44-54. [PMID: 28755853 DOI: 10.1016/j.neuropsychologia.2017.07.030] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Revised: 07/19/2017] [Accepted: 07/25/2017] [Indexed: 01/20/2023]
Abstract
Functional neuroimaging evidence suggests that there are differences in the neural correlates of episodic memory for laboratory stimuli (laboratory memory) and for events from one's own life (autobiographical memory). However, this evidence is scarce and often confounded with differences in memory testing procedures. Here, we directly compared the neural mechanisms underlying the search and recovery of autobiographical and laboratory memories while minimizing testing differences. Before scanning, participants completed a laboratory memory encoding task in which they studied four-word "chains" spread across three word pairs. During scanning, participants completed a laboratory memory retrieval task, in which they recalled the word chains, and an autobiographical memory retrieval task, in which they recalled specific personal events associated with word cues. Importantly, response times were similar in the two tasks, allowing for a direct comparison of the activation time courses. We found that during memory search (searching for the memory target), similar brain regions were activated during both the autobiographical and laboratory tasks, whereas during memory recovery (accessing the memory traces; i.e., ecphory), clear differences emerged: regions of the default mode network (DMN) were activated greater during autobiographical than laboratory memory, whereas the bilateral superior parietal lobules were activated greater during laboratory than autobiographical memory. Also, multivariate functional connectivity analyses revealed that regardless of memory stage, the DMN and ventral attention network exhibited a more integrated topology in the functional network underlying autobiographical (vs. laboratory) memory retrieval, whereas the fronto-parietal task control network exhibited a more integrated topology in the functional network underlying laboratory (vs. autobiographical) memory retrieval. These findings further characterize the shared and distinct neural components underlying autobiographical and laboratory memories, and suggest that differences in autobiographical vs. laboratory memory brain activation previously reported in the literature reflect memory recovery rather than search differences.
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Affiliation(s)
- Zachary A Monge
- Center for Cognitive Neuroscience, Duke University, Durham, NC 27708, United States.
| | - Erik A Wing
- Center for Cognitive Neuroscience, Duke University, Durham, NC 27708, United States.
| | - Jared Stokes
- Department of Psychology, University of California, Davis, Davis, CA 95616, United States.
| | - Roberto Cabeza
- Center for Cognitive Neuroscience, Duke University, Durham, NC 27708, United States.
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50
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Korsakova N, Liebson E, Moskovich L. Split-brain phenomena in anterior communicating artery aneurysm rupture: A case report. Psych J 2017; 6:120-136. [PMID: 28660741 DOI: 10.1002/pchj.145] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Revised: 05/15/2016] [Accepted: 08/09/2016] [Indexed: 11/05/2022]
Abstract
In 1976, a patient with an anterior communicating artery aneurysm (ACoAA) rupture (diagnosed on angiography) and sub-arachnoid hemorrhage (SAH) underwent serial neuropsychological testing revealing a classical anterior cerebral artery (ACA) spasm picture with severe anterograde amnesia of Korsakoff's type and dysexecutive syndrome. In addition, the patient demonstrated impaired hemispheric interaction with alien hand syndrome, dyscopia-dysgraphia, complete left ear neglect, and other, more complex, split-brain phenomena. He was evaluated by A. R. Luria in 1976. Following surgery the patient demonstrated gradual improvement.
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Affiliation(s)
- Natalya Korsakova
- Department of Neuro- and Pathopsychology, Lomonosov Moscow State University, Moscow, Russia
| | - Elizabeth Liebson
- Department of Psychiatry, McLean Hospital, Belmont, Massachusetts, USA
| | - Lena Moskovich
- Department of Neurology, Boston University School of Medicine, Boston, Massachusetts, USA
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