1
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Kalagara R, Hrabarchuk EI, Hannah TC, Downes MH, Li T, Vasan V, Li AY, Asfaw ZK, Quinones A, McCarthy L, Schupper AJ, Gometz A, Lovell MR, Choudhri TF. The effect of age on baseline neurocognitive performance. Brain Inj 2024; 38:136-141. [PMID: 38328998 DOI: 10.1080/02699052.2024.2307968] [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: 06/01/2022] [Accepted: 01/17/2024] [Indexed: 02/09/2024]
Abstract
OBJECTIVE Evaluate the independent effect of age on baseline neurocognitive performance. STUDY DESIGN Baseline ImPACT scores from tests taken by 7454 athletes aged 12-22 from 2009 to 2019 were split into three age cohorts: 12-14 years (3244), 15-17 years (3732), and 18-22 years (477). Linear regression analyses were used to evaluate the effect of age on ImPACT composite scores while controlling for demographic differences, medication-use, and symptom burden. Significance values have been set at p < 0.05. RESULTS Linear regression analyses demonstrated that increased age does not significantly affect symptom score (β = 0.06, p = 0.54) but does improve impulse control (β = -0.45, p < 0.0001), verbal memory (β = 0.23, p = 0.03), visualmotor (β = 0.77, p < 0.0001), and reaction time (β = -0.008, p < 0.0001) scores. However, age did not have an effect on visual memory scores (β = -0.25, p = 0.07). CONCLUSIONS Age was shown to be an independent modifier of impulse control, verbal memory, visual motor, and reaction time scores but not visual memory or symptom scores. This underscores the previous literature showing developmental differences as age increases among the adolescent athlete population. This data also indicates the need for repeat neurocognitive baseline testing every other year as baseline scoring is likely to change as athletes become older.
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Affiliation(s)
- Roshini Kalagara
- Department of Neurosurgery, Icahn School of Medicine, at Mount Sinai, New York, USA
| | - Eugene I Hrabarchuk
- Department of Neurosurgery, Icahn School of Medicine, at Mount Sinai, New York, USA
| | - Theodore C Hannah
- Department of Neurosurgery, Icahn School of Medicine, at Mount Sinai, New York, USA
| | - Margaret H Downes
- Department of Neurosurgery, Icahn School of Medicine, at Mount Sinai, New York, USA
| | - Troy Li
- Department of Neurosurgery, Icahn School of Medicine, at Mount Sinai, New York, USA
| | - Vikram Vasan
- Department of Neurosurgery, Icahn School of Medicine, at Mount Sinai, New York, USA
| | - Adam Y Li
- Department of Neurosurgery, Icahn School of Medicine, at Mount Sinai, New York, USA
| | - Zerubabbel K Asfaw
- Department of Neurosurgery, Icahn School of Medicine, at Mount Sinai, New York, USA
| | - Addison Quinones
- Department of Neurosurgery, Icahn School of Medicine, at Mount Sinai, New York, USA
| | - Lily McCarthy
- Department of Neurosurgery, Icahn School of Medicine, at Mount Sinai, New York, USA
| | - Alexander J Schupper
- Department of Neurosurgery, Icahn School of Medicine, at Mount Sinai, New York, USA
| | - Alex Gometz
- Concussion Management of New York, New York, USA
| | - Mark R Lovell
- Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Tanvir F Choudhri
- Department of Neurosurgery, Icahn School of Medicine, at Mount Sinai, New York, USA
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2
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Etami Y, Lildharrie C, Manza P, Wang GJ, Volkow ND. Neuroimaging in Adolescents: Post-Traumatic Stress Disorder and Risk for Substance Use Disorders. Genes (Basel) 2023; 14:2113. [PMID: 38136935 PMCID: PMC10743116 DOI: 10.3390/genes14122113] [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: 10/01/2023] [Revised: 11/17/2023] [Accepted: 11/21/2023] [Indexed: 12/24/2023] Open
Abstract
Trauma in childhood and adolescence has long-term negative consequences in brain development and behavior and increases the risk for psychiatric disorders. Among them, post-traumatic stress disorder (PTSD) during adolescence illustrates the connection between trauma and substance misuse, as adolescents may utilize substances to cope with PTSD. Drug misuse may in turn lead to neuroadaptations in learning processes that facilitate the consolidation of traumatic memories that perpetuate PTSD. This reflects, apart from common genetic and epigenetic modifications, overlapping neurocircuitry engagement triggered by stress and drug misuse that includes structural and functional changes in limbic brain regions and the salience, default-mode, and frontoparietal networks. Effective strategies to prevent PTSD are needed to limit the negative consequences associated with the later development of a substance use disorder (SUD). In this review, we will examine the link between PTSD and SUDs, along with the resulting effects on memory, focusing on the connection between the development of an SUD in individuals who struggled with PTSD in adolescence. Neuroimaging has emerged as a powerful tool to provide insight into the brain mechanisms underlying the connection of PTSD in adolescence and the development of SUDs.
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Affiliation(s)
| | | | | | - Gene-Jack Wang
- Laboratory of Neuroimaging, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD 20892, USA; (Y.E.); (C.L.); (P.M.); (N.D.V.)
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3
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Kowalczyk OS, Cubillo AI, Criaud M, Giampietro V, O'Daly OG, Mehta MA, Rubia K. Single-dose effects of methylphenidate and atomoxetine on functional connectivity during an n-back task in boys with ADHD. Psychopharmacology (Berl) 2023; 240:2045-2060. [PMID: 37500785 PMCID: PMC10506949 DOI: 10.1007/s00213-023-06422-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Accepted: 07/08/2023] [Indexed: 07/29/2023]
Abstract
RATIONALE Working memory deficits and associated neurofunctional abnormalities are frequently reported in attention-deficit/hyperactivity disorder (ADHD). Methylphenidate and atomoxetine improve working memory performance and increase activation of regions under-functioning in ADHD. Additionally, methylphenidate has been observed to modulate functional networks involved in working memory. No research, however, has examined the effects of atomoxetine or compared the two drugs. OBJECTIVES This study aimed to test methylphenidate and atomoxetine effects on functional connectivity during working memory in boys with ADHD. METHODS We tested comparative effects of methylphenidate and atomoxetine on functional connectivity during the n-back task in 19 medication-naïve boys with ADHD (10-15 years old) relative to placebo and assessed potential normalisation effects of brain dysfunctions under placebo relative to 20 age-matched neurotypical boys. Patients were scanned in a randomised, double-blind, cross-over design under single doses of methylphenidate, atomoxetine, and placebo. Controls were scanned once, unmedicated. RESULTS Patients under placebo showed abnormally increased connectivity between right superior parietal gyrus (rSPG) and left central operculum/insula. This hyperconnectivity was not observed when patients were under methylphenidate or atomoxetine. Furthermore, under methylphenidate, patients showed increased connectivity relative to controls between right middle frontal gyrus (rMFG) and cingulo-temporo-parietal and striato-thalamic regions, and between rSPG and cingulo-parietal areas. Interrogating these networks within patients revealed increased connectivity between both rMFG and rSPG and right supramarginal gyrus under methylphenidate relative to placebo. Nonetheless, no differences across drug conditions were observed within patients at whole brain level. No drug effects on performance were observed. CONCLUSIONS This study shows shared modulating effects of methylphenidate and atomoxetine on parieto-insular connectivity but exclusive effects of methylphenidate on connectivity increases in fronto-temporo-parietal and fronto-striato-thalamic networks in ADHD.
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Affiliation(s)
- Olivia S Kowalczyk
- Department of Neuroimaging, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK.
| | - Ana I Cubillo
- Department of Child & Adolescent Psychiatry, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
- Jacobs Center for Productive Youth Development, Zurich Center for Neuroeconomics, University of Zürich, Zürich, Switzerland
| | - Marion Criaud
- Department of Child & Adolescent Psychiatry, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
| | - Vincent Giampietro
- Department of Neuroimaging, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
| | - Owen G O'Daly
- Department of Neuroimaging, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
| | - Mitul A Mehta
- Department of Neuroimaging, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
| | - Katya Rubia
- Department of Child & Adolescent Psychiatry, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
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4
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Clark SV, Satterthwaite TD, King TZ, Morris RD, Zendehrouh E, Turner JA. Cerebellum-cingulo-opercular network connectivity strengthens in adolescence and supports attention efficiency only in childhood. Dev Cogn Neurosci 2022; 56:101129. [PMID: 35820341 PMCID: PMC9284395 DOI: 10.1016/j.dcn.2022.101129] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 06/10/2022] [Accepted: 06/23/2022] [Indexed: 11/29/2022] Open
Affiliation(s)
- Sarah V Clark
- VA Palo Alto Health Care System, Psychology Service, United States.
| | - Theodore D Satterthwaite
- Penn Lifespan Informatics and Neuroimaging Center, University of Pennsylvania Perelman School of Medicine, United States; Department of Psychiatry, University of Pennsylvania Perelman School of Medicine, United States
| | - Tricia Z King
- Georgia State University, Department of Psychology, United States; Georgia State University, Neuroscience Institute, United States
| | - Robin D Morris
- Georgia State University, Department of Psychology, United States
| | - Elaheh Zendehrouh
- Georgia State University, Department of Computer Science, United States
| | - Jessica A Turner
- Department of Psychiatry and Behavioral Health, The Ohio State University College of Medicine, United States
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5
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Krieger V, Amador-Campos JA. Clinical presentations of attention-deficit/hyperactivity disorder (ADHD) in children and adolescents: comparison of neurocognitive performance. Child Neuropsychol 2021; 27:1024-1053. [PMID: 33928840 DOI: 10.1080/09297049.2021.1917530] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
This study aimed to compare performance in working memory (WM), processing speed (PRS), and attention measures in children and adolescents with typical development (TD) and with Attention deficit hyperactivity disorder (inattentive [ADHD-I] or combined [ADHD-C]) presentations, and to determine the predictive ability of the measures mentioned to discriminate between ADHD presentations and TD. 260 children and adolescents, 138 with ADHD (70 ADHD-I and 68 ADHD-C) and 122 TD in two age cohorts (8-12 years; 13-16 years), were assessed with WM and PRS indexes of Wechsler Intelligence Scale for Children (WISC-IV) and the d2 attention test. Significant differences between ADHD and TD groups in the WISC-IV GAI scores were found in children but not in adolescents. Children and adolescents with both ADHD presentations performed poorly on the PRS index, while on the WM index only children exhibited difficulties. In the attention test, children with ADHD-C showed more impulsivity and more difficulties for processing speed, concentration and accuracy than ADHD-I and TD. In addition, both ADHD presentations had higher inattention scores than TD. ADHD adolescents performed worse than TD in processing speed, concentration and accuracy. ADHD groups showed more impulsivity and inattention than TD. Digit Span and Symbol Search (WISC-IV) and processing speed and accuracy (d2) successfully classified ADHD and TD in children, but in adolescents, only coding (WISC-IV) and accuracy (d2) successfully classified ADHD presentations and TD. The WISC-IV and d2 yield neuropsychological profiles which reflect age-related cognitive changes and may allow the adaptation of more tailored early interventions for ADHD.
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Affiliation(s)
- Virginia Krieger
- Department of Clinical Psychology and Psychobiology, Faculty of Psychology, University of Barcelona, Barcelona, Spain
| | - Juan Antonio Amador-Campos
- Department of Clinical Psychology and Psychobiology, Faculty of Psychology, University of Barcelona, Barcelona, Spain.,Institute of Neuroscience, University of Barcelona (UBneuro), Barcelona, Spain
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6
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Clark SV, Semmel ES, Aleksonis HA, Steinberg SN, King TZ. Cerebellar-Subcortical-Cortical Systems as Modulators of Cognitive Functions. Neuropsychol Rev 2021; 31:422-446. [PMID: 33515170 DOI: 10.1007/s11065-020-09465-1] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Accepted: 11/10/2020] [Indexed: 02/07/2023]
Abstract
Over the past few decades, research has established that the cerebellum is involved in executive functions; however, its specific role remains unclear. There are numerous theories of cerebellar function and numerous cognitive processes falling under the umbrella of executive function, making investigations of the cerebellum's role in executive functioning challenging. In this review, we explored the role of the cerebellum in executive functioning through clinical and cognitive neuroscience frameworks. We reviewed the neuroanatomical systems and theoretical models of cerebellar functions and the multifaceted nature of executive functions. Using attention deficit hyperactivity disorder and cerebellar tumor as clinical developmental models of cerebellar dysfunction, and the functional magnetic resonance imaging literature, we reviewed evidence for cerebellar involvement in specific components of executive function in childhood, adolescence, and adulthood. There is evidence for posterior cerebellar contributions to working memory, planning, inhibition, and flexibility, but the heterogeneous literature that largely was not designed to study the cerebellum makes it difficult to determine specific functions of the cerebellum or cerebellar regions. In addition, while it is clear that cerebellar insult in childhood affects executive function performance later in life, more work is needed to elucidate the mechanisms by which executive dysfunction occurs and its developmental course. The limitations of the current literature are discussed and potential directions for future research are provided.
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Affiliation(s)
- Sarah V Clark
- Department of Psychology, Georgia State University, GA, 30303, Atlanta, USA
| | - Eric S Semmel
- Department of Psychology, Georgia State University, GA, 30303, Atlanta, USA
| | - Holly A Aleksonis
- Department of Psychology, Georgia State University, GA, 30303, Atlanta, USA
| | | | - Tricia Z King
- Department of Psychology, Georgia State University, GA, 30303, Atlanta, USA. .,Neuroscience Institute, Georgia State University, GA, 30303, Atlanta, USA.
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7
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Attout L, Ordonez Magro L, Szmalec A, Majerus S. The developmental neural substrates of Hebb repetition learning and their link with reading ability. Hum Brain Mapp 2020; 41:3956-3969. [PMID: 32573904 PMCID: PMC7469830 DOI: 10.1002/hbm.25099] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 06/04/2020] [Accepted: 06/06/2020] [Indexed: 11/07/2022] Open
Abstract
Hebb repetition learning is a fundamental learning mechanism for sequential knowledge, such as language. However, still little is known about its development. This fMRI study examined the developmental neural substrates of Hebb repetition learning and its relation with reading abilities in a group of 49 children aged from 6 to 12 years. In the scanner, the children carried out an immediate serial recall task for syllable sequences of which some sequences were repeated several times over the course of the session (Hebb repetition sequences). The rate of Hebb repetition learning was associated with modulation of activity in the medial temporal lobe. Importantly, for the age range studied here, learning-related medial temporal lobe modulation was independent of the age of the children. Furthermore, we observed an association between regular and irregular word reading abilities and the neural substrates of Hebb repetition learning. This study suggests that the functional neural substrates of Hebb repetition learning do not undergo further maturational changes in school age children, possibly because they are sustained by implicit sequential learning mechanisms which are considered to be fully developed by that age. Importantly, the neural substrates of Hebb learning remain significant determinants of children's learning abilities, such as reading.
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Affiliation(s)
- Lucie Attout
- Psychology and Neuroscience of Cognition Research Unit, University of Liège, Liège, Belgium.,Fund for Scientific Research FNRS, Brussels, Belgium
| | - Laura Ordonez Magro
- Psychological Sciences Research Institute, Université catholique de Louvain, Louvain-la-Neuve, Belgium
| | - Arnaud Szmalec
- Psychological Sciences Research Institute, Université catholique de Louvain, Louvain-la-Neuve, Belgium.,Department of Experimental Psychology, Ghent University, Ghent, Belgium
| | - Steve Majerus
- Psychology and Neuroscience of Cognition Research Unit, University of Liège, Liège, Belgium.,Fund for Scientific Research FNRS, Brussels, Belgium
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8
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Attout L, Ordonez Magro L, Szmalec A, Majerus S. The developmental neural substrates of item and serial order components of verbal working memory. Hum Brain Mapp 2018; 40:1541-1553. [PMID: 30430689 DOI: 10.1002/hbm.24466] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 10/26/2018] [Accepted: 10/31/2018] [Indexed: 11/09/2022] Open
Abstract
Behavioral and developmental studies have made a critical distinction between item and serial order processing components of verbal working memory (WM). This functional magnetic resonance imaging (fMRI) study determined the extent to which item and serial order WM components are characterized by specialized neural networks already in young children or whether this specialization emerges at a later developmental stage. Total of 59 children aged 7-12 years performed item and serial order short-term probe recognition tasks in an fMRI experiment. While a left frontoparietal network was recruited in both item and serial order WM conditions, the right intraparietal sulcus was selectively involved in the serial order WM condition. This neural segregation was modulated by age, with both networks becoming increasingly separated in older children. Our results indicate a progressive specialization of networks involved in item and order WM processes during cognitive development.
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Affiliation(s)
- Lucie Attout
- Psychology and Neuroscience of Cognition Research Unit, University of Liège, Liège, Belgium
| | - Laura Ordonez Magro
- Psychological Sciences Research Institute, Université Catholique de Louvain, Louvain-la-Neuve, Belgium
| | - Arnaud Szmalec
- Psychological Sciences Research Institute, Université Catholique de Louvain, Louvain-la-Neuve, Belgium.,Department of Experimental Psychology, Ghent University, Ghent, Belgium
| | - Steve Majerus
- Psychology and Neuroscience of Cognition Research Unit, University of Liège, Liège, Belgium.,Fund for Scientific Research FNRS, Brussels, Belgium
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9
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Jiang P, Vuontela V, Tokariev M, Lin H, Aronen ET, Ma Y, Carlson S. Functional connectivity of intrinsic cognitive networks during resting state and task performance in preadolescent children. PLoS One 2018; 13:e0205690. [PMID: 30332489 PMCID: PMC6192623 DOI: 10.1371/journal.pone.0205690] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Accepted: 09/28/2018] [Indexed: 02/05/2023] Open
Abstract
Earlier studies on adults have shown that functional connectivity (FC) of brain networks can vary depending on the brain state and cognitive challenge. Network connectivity has been investigated quite extensively in children in resting state, much less during tasks and is largely unexplored between these brain states. Here we used functional magnetic resonance imaging and independent component analysis to investigate the functional architecture of large-scale brain networks in 16 children (aged 7–11 years, 11 males) and 16 young adults (aged 22–29 years, 10 males) during resting state and visual working memory tasks. We identified the major neurocognitive intrinsic connectivity networks (ICNs) in both groups. Children had stronger FC than adults within the cingulo-opercular network in resting state, during task performance, and after controlling for performance differences. During tasks, children had stronger FC than adults also within the default mode (DMN) and right frontoparietal (rFPN) networks, and between the anterior DMN and the frontopolar network, whereas adults had stronger coupling between the anterior DMN and rFPN. Furthermore, children compared to adults modulated the FC strength regarding the rFPN differently between the brain states. The FC within the anterior DMN correlated with age and performance in children so that the younger they were, the stronger was the FC, and the stronger the FC within this network, the slower they performed the tasks. The group differences in the network connectivity reported here, and the observed correlations with task performance, provide insight into the normative development of the preadolescent brain and link maturation of functional connectivity with improving cognitive performance.
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Affiliation(s)
- Ping Jiang
- Neuroscience Unit, Department of Physiology, Faculty of Medicine, University of Helsinki, Helsinki, Finland.,Department of Neuroscience and Biomedical Engineering, and Advanced Magnetic Imaging Centre, Aalto NeuroImaging, Aalto University School of Science, Espoo, Finland.,Huaxi Magnetic Resonance Research Center, Department of Radiology, West China Hospital of Sichuan University, Chengdu, China
| | - Virve Vuontela
- Neuroscience Unit, Department of Physiology, Faculty of Medicine, University of Helsinki, Helsinki, Finland.,Child Psychiatry, Children's Hospital, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Maksym Tokariev
- Neuroscience Unit, Department of Physiology, Faculty of Medicine, University of Helsinki, Helsinki, Finland.,Department of Neuroscience and Biomedical Engineering, and Advanced Magnetic Imaging Centre, Aalto NeuroImaging, Aalto University School of Science, Espoo, Finland
| | - Hai Lin
- Neuroscience Unit, Department of Physiology, Faculty of Medicine, University of Helsinki, Helsinki, Finland.,Department of Neuroscience and Biomedical Engineering, and Advanced Magnetic Imaging Centre, Aalto NeuroImaging, Aalto University School of Science, Espoo, Finland
| | - Eeva T Aronen
- Child Psychiatry, Children's Hospital, University of Helsinki and Helsinki University Hospital, Helsinki, Finland.,Pediatric Research Center, Laboratory of Developmental Psychopathology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - YuanYe Ma
- Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - Synnöve Carlson
- Neuroscience Unit, Department of Physiology, Faculty of Medicine, University of Helsinki, Helsinki, Finland.,Department of Neuroscience and Biomedical Engineering, and Advanced Magnetic Imaging Centre, Aalto NeuroImaging, Aalto University School of Science, Espoo, Finland
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10
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Aerobic-Exercise and resistance-training interventions have been among the least effective ways to improve executive functions of any method tried thus far. Dev Cogn Neurosci 2018; 37:100572. [PMID: 29909061 PMCID: PMC6969311 DOI: 10.1016/j.dcn.2018.05.001] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Revised: 04/03/2018] [Accepted: 05/04/2018] [Indexed: 01/04/2023] Open
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11
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Toppi J, Astolfi L, Risetti M, Anzolin A, Kober SE, Wood G, Mattia D. Different Topological Properties of EEG-Derived Networks Describe Working Memory Phases as Revealed by Graph Theoretical Analysis. Front Hum Neurosci 2018; 11:637. [PMID: 29379425 PMCID: PMC5770976 DOI: 10.3389/fnhum.2017.00637] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Accepted: 12/14/2017] [Indexed: 12/16/2022] Open
Abstract
Several non-invasive imaging methods have contributed to shed light on the brain mechanisms underlying working memory (WM). The aim of the present study was to depict the topology of the relevant EEG-derived brain networks associated to distinct operations of WM function elicited by the Sternberg Item Recognition Task (SIRT) such as encoding, storage, and retrieval in healthy, middle age (46 ± 5 years) adults. High density EEG recordings were performed in 17 participants whilst attending a visual SIRT. Neural correlates of WM were assessed by means of a combination of EEG signal processing methods (i.e., time-varying connectivity estimation and graph theory), in order to extract synthetic descriptors of the complex networks underlying the encoding, storage, and retrieval phases of WM construct. The group analysis revealed that the encoding phase exhibited a significantly higher small-world topology of EEG networks with respect to storage and retrieval in all EEG frequency oscillations, thus indicating that during the encoding of items the global network organization could “optimally” promote the information flow between WM sub-networks. We also found that the magnitude of such configuration could predict subject behavioral performance when memory load increases as indicated by the negative correlation between Reaction Time and the local efficiency values estimated during the encoding in the alpha band in both 4 and 6 digits conditions. At the local scale, the values of the degree index which measures the degree of in- and out- information flow between scalp areas were found to specifically distinguish the hubs within the relevant sub-networks associated to each of the three different WM phases, according to the different role of the sub-network of regions in the different WM phases. Our findings indicate that the use of EEG-derived connectivity measures and their related topological indices might offer a reliable and yet affordable approach to monitor WM components and thus theoretically support the clinical assessment of cognitive functions in presence of WM decline/impairment, as it occurs after stroke.
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Affiliation(s)
- Jlenia Toppi
- Department of Computer, Control and Management Engineering, Sapienza University of Rome, Rome, Italy.,Neuroelectrical Imaging and Brain-Computer Interface Laboratory, Fondazione Santa Lucia IRCCS, Rome, Italy
| | - Laura Astolfi
- Department of Computer, Control and Management Engineering, Sapienza University of Rome, Rome, Italy.,Neuroelectrical Imaging and Brain-Computer Interface Laboratory, Fondazione Santa Lucia IRCCS, Rome, Italy
| | - Monica Risetti
- Neuroelectrical Imaging and Brain-Computer Interface Laboratory, Fondazione Santa Lucia IRCCS, Rome, Italy
| | - Alessandra Anzolin
- Department of Computer, Control and Management Engineering, Sapienza University of Rome, Rome, Italy.,Neuroelectrical Imaging and Brain-Computer Interface Laboratory, Fondazione Santa Lucia IRCCS, Rome, Italy
| | - Silvia E Kober
- Department of Psychology, University of Graz, Graz, Austria.,BioTechMed-Graz, Graz, Austria
| | - Guilherme Wood
- Department of Psychology, University of Graz, Graz, Austria.,BioTechMed-Graz, Graz, Austria
| | - Donatella Mattia
- Neuroelectrical Imaging and Brain-Computer Interface Laboratory, Fondazione Santa Lucia IRCCS, Rome, Italy
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Calhoun VD, de Lacy N. Ten Key Observations on the Analysis of Resting-state Functional MR Imaging Data Using Independent Component Analysis. Neuroimaging Clin N Am 2017; 27:561-579. [PMID: 28985929 DOI: 10.1016/j.nic.2017.06.012.ten] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
For more than 20 years, the powerful, flexible family of independent component analysis (ICA) techniques has been used to examine spatial, temporal, and subject variation in functional magnetic resonance (fMR) imaging data. This article provides an overview of 10 key principles in the basic and advanced application of ICA to resting-state fMR imaging. ICA's core advantages include robustness to artifact; false-positives and autocorrelation; adaptability to variant study designs; agnosticism to the temporal evolution of fMR imaging signals; and ability to extract, identify, and analyze neural networks. ICA remains in the vanguard of fMRI methods development.
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Affiliation(s)
- Vince D Calhoun
- The Mind Research Network, 1101 Yale Boulevard Northeast, Albuquerque, NM 87106, USA; Department of ECE, University of New Mexico, 1 University of New Mexico, Albuquerque, NM 87131, USA.
| | - Nina de Lacy
- Department of Psychiatry and Behavioral Science, University of Washington, Seattle, WA 98195, USA
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13
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Siffredi V, Spencer-Smith M, Barrouillet P, Vaessen M, Leventer R, Anderson V, Vuilleumier P. Neural correlates of working memory in children and adolescents with agenesis of the corpus callosum: An fMRI study. Neuropsychologia 2017; 106:71-82. [DOI: 10.1016/j.neuropsychologia.2017.09.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Revised: 08/19/2017] [Accepted: 09/07/2017] [Indexed: 11/16/2022]
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14
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Calhoun VD, de Lacy N. Ten Key Observations on the Analysis of Resting-state Functional MR Imaging Data Using Independent Component Analysis. Neuroimaging Clin N Am 2017; 27:561-579. [PMID: 28985929 DOI: 10.1016/j.nic.2017.06.012] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
For more than 20 years, the powerful, flexible family of independent component analysis (ICA) techniques has been used to examine spatial, temporal, and subject variation in functional magnetic resonance (fMR) imaging data. This article provides an overview of 10 key principles in the basic and advanced application of ICA to resting-state fMR imaging. ICA's core advantages include robustness to artifact; false-positives and autocorrelation; adaptability to variant study designs; agnosticism to the temporal evolution of fMR imaging signals; and ability to extract, identify, and analyze neural networks. ICA remains in the vanguard of fMRI methods development.
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Affiliation(s)
- Vince D Calhoun
- The Mind Research Network, 1101 Yale Boulevard Northeast, Albuquerque, NM 87106, USA; Department of ECE, University of New Mexico, 1 University of New Mexico, Albuquerque, NM 87131, USA.
| | - Nina de Lacy
- Department of Psychiatry and Behavioral Science, University of Washington, Seattle, WA 98195, USA
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15
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Reichert J, Ninaus M, Schuehly W, Hirschmann C, Bagga D, Schöpf V. Functional brain networks during picture encoding and recognition in different odor contexts. Behav Brain Res 2017. [DOI: 10.1016/j.bbr.2017.06.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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16
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Examining distinct working memory processes in children and adolescents using fMRI: Results and validation of a modified Brown-Peterson paradigm. PLoS One 2017; 12:e0179959. [PMID: 28704424 PMCID: PMC5509143 DOI: 10.1371/journal.pone.0179959] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Accepted: 06/07/2017] [Indexed: 11/19/2022] Open
Abstract
Verbal working memory (WM) comprises different processes (encoding, maintenance, retrieval) that are often compromised in brain diseases, but their neural correlates have not yet been examined in childhood and adolescence. To probe WM processes and associated neural correlates in developmental samples, and obtain comparable effects across different ages and populations, we designed an adapted Brown-Peterson task (verbal encoding and retrieval combined with verbal and visual concurrent tasks during maintenance) to implement during functional magnetic resonance imaging (fMRI). In a sample of typically developing children and adolescents (n = 16), aged 8 to 16 years, our paradigm successfully identified distinct patterns of activation for encoding, maintenance, and retrieval. While encoding activated perceptual systems in posterior and ventral visual regions, retrieval activated fronto-parietal regions associated with executive control and attention. We found a different impact of verbal versus visual concurrent processing during WM maintenance: at retrieval, the former condition evoked greater activations in visual cortex, as opposed to selective involvement of language-related areas in left temporal cortex in the latter condition. These results are in accord with WM models, suggesting greater competition for processing resources when retrieval follows within-domain compared with cross-domain interference. This pattern was found regardless of age. Our study provides a novel paradigm to investigate distinct WM brain systems with reliable results across a wide age range in developmental populations, and suitable for participants with different WM capacities.
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17
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Reichert JL, Chocholous M, Leiss U, Pletschko T, Kasprian G, Furtner J, Kollndorfer K, Krajnik J, Slavc I, Prayer D, Czech T, Schöpf V, Dorfer C. Neuronal correlates of cognitive function in patients with childhood cerebellar tumor lesions. PLoS One 2017; 12:e0180200. [PMID: 28692686 PMCID: PMC5503240 DOI: 10.1371/journal.pone.0180200] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Accepted: 06/12/2017] [Indexed: 11/26/2022] Open
Abstract
While it has been shown that cerebellar tumor lesions have an impact on cognitive functions, the extent to which they shape distant neuronal pathways is still largely undescribed. Thus, the present neuroimaging study was designed to investigate different aspects of cognitive function and their neuronal correlates in patients after childhood cerebellar tumor surgery. An alertness task, a working memory task and an incompatibility task were performed by 11 patients after childhood cerebellar tumor surgery and 17 healthy controls. Neuronal correlates as reflected by alterations in functional networks during tasks were assessed using group independent component analysis. We were able to identify eight networks involved during task performance: default mode network, precuneus, anterior salience network, executive control network, visual network, auditory and sensorimotor network and a cerebellar network. For the most ‘basic’ cognitive tasks, a weaker task-modulation of default mode network, left executive control network and the cerebellar network was observed in patients compared to controls. Results for higher-order tasks are in line with a partial restoration of networks responsible for higher-order task execution. Our results provide tentative evidence that the synchronicity of brain activity in patients was at least partially restored in the course of neuroplastic reorganization, particularly for networks related to higher-order cognitive processes. The complex activation patterns underline the importance of testing several cognitive functions to assess the specificity of cognitive deficits and neuronal reorganization processes after brain lesions.
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Affiliation(s)
- Johanna L. Reichert
- Institute of Psychology, University of Graz, Graz, Austria
- BioTechMed, Graz, Austria
| | - Monika Chocholous
- Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Vienna, Austria
- Comprehensive Cancer Center–CNS Tumors Unit (CCC-CNS), Medical University of Vienna, Vienna, Austria
| | - Ulrike Leiss
- Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Vienna, Austria
- Comprehensive Cancer Center–CNS Tumors Unit (CCC-CNS), Medical University of Vienna, Vienna, Austria
| | - Thomas Pletschko
- Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Vienna, Austria
- Comprehensive Cancer Center–CNS Tumors Unit (CCC-CNS), Medical University of Vienna, Vienna, Austria
| | - Gregor Kasprian
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Julia Furtner
- Comprehensive Cancer Center–CNS Tumors Unit (CCC-CNS), Medical University of Vienna, Vienna, Austria
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Kathrin Kollndorfer
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Jacqueline Krajnik
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
- Department of Neurosurgery, Medical University of Vienna, Vienna, Austria
| | - Irene Slavc
- Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Vienna, Austria
- Comprehensive Cancer Center–CNS Tumors Unit (CCC-CNS), Medical University of Vienna, Vienna, Austria
| | - Daniela Prayer
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Thomas Czech
- Comprehensive Cancer Center–CNS Tumors Unit (CCC-CNS), Medical University of Vienna, Vienna, Austria
- Department of Neurosurgery, Medical University of Vienna, Vienna, Austria
| | - Veronika Schöpf
- Institute of Psychology, University of Graz, Graz, Austria
- BioTechMed, Graz, Austria
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Christian Dorfer
- Comprehensive Cancer Center–CNS Tumors Unit (CCC-CNS), Medical University of Vienna, Vienna, Austria
- Department of Neurosurgery, Medical University of Vienna, Vienna, Austria
- * E-mail:
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18
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Diwadkar VA, Asemi A, Burgess A, Chowdury A, Bressler SL. Potentiation of motor sub-networks for motor control but not working memory: Interaction of dACC and SMA revealed by resting-state directed functional connectivity. PLoS One 2017; 12:e0172531. [PMID: 28278267 PMCID: PMC5344349 DOI: 10.1371/journal.pone.0172531] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Accepted: 02/06/2017] [Indexed: 12/20/2022] Open
Abstract
The dorsal Anterior Cingulate Cortex (dACC) and the Supplementary Motor Area (SMA) are known to interact during motor coordination behavior. We previously discovered that the directional influences underlying this interaction in a visuo-motor coordination task are asymmetric, with the dACC→SMA influence being significantly greater than that in the reverse direction. To assess the specificity of this effect, here we undertook an analysis of the interaction between dACC and SMA in two distinct contexts. In addition to the motor coordination task, we also assessed these effects during a (n-back) working memory task. We applied directed functional connectivity analysis to these two task paradigms, and also to the rest condition of each paradigm, in which rest blocks were interspersed with task blocks. We report here that the previously known asymmetric interaction between dACC and SMA, with dACC→SMA dominating, was significantly larger in the motor coordination task than the memory task. Moreover the asymmetry between dACC and SMA was reversed during the rest condition of the motor coordination task, but not of the working memory task. In sum, the dACC→SMA influence was significantly greater in the motor task than the memory task condition, and the SMA→dACC influence was significantly greater in the motor rest than the memory rest condition. We interpret these results as suggesting that the potentiation of motor sub-networks during the motor rest condition supports the motor control of SMA by dACC during the active motor task condition.
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Affiliation(s)
- Vaibhav A. Diwadkar
- Dept. of Psychiatry & Behavioral Neurosciences, Wayne State University School of Medicine, Detroit, Michigan, United States of America
- * E-mail:
| | - Avisa Asemi
- Center for Complex Systems and Brain Sciences, Florida Atlantic University, Boca Raton, Florida, United States of America
| | - Ashley Burgess
- Dept. of Psychiatry & Behavioral Neurosciences, Wayne State University School of Medicine, Detroit, Michigan, United States of America
| | - Asadur Chowdury
- Dept. of Psychiatry & Behavioral Neurosciences, Wayne State University School of Medicine, Detroit, Michigan, United States of America
| | - Steven L. Bressler
- Center for Complex Systems and Brain Sciences, Florida Atlantic University, Boca Raton, Florida, United States of America
- Department of Psychology, Florida Atlantic University, Boca Raton, Florida, United States of America
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Zhang Y, Lu S, Liu C, Zhang H, Zhou X, Ni C, Qin W, Zhang Q. Altered brain activation and functional connectivity in working memory related networks in patients with type 2 diabetes: An ICA-based analysis. Sci Rep 2016; 6:23767. [PMID: 27021340 PMCID: PMC4810460 DOI: 10.1038/srep23767] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Accepted: 03/15/2016] [Indexed: 11/09/2022] Open
Abstract
Type 2 diabetes mellitus (T2DM) can cause multidimensional cognitive deficits, among which working memory (WM) is usually involved at an early stage. However, the neural substrates underlying impaired WM in T2DM patients are still unclear. To clarify this issue, we utilized functional magnetic resonance imaging (fMRI) and independent component analysis to evaluate T2DM patients for alterations in brain activation and functional connectivity (FC) in WM networks and to determine their associations with cognitive and clinical variables. Twenty complication-free T2DM patients and 19 matched healthy controls (HCs) were enrolled, and fMRI data were acquired during a block-designed 1-back WM task. The WM metrics of the T2DM patients showed no differences compared with those of the HCs, except for a slightly lower accuracy rate in the T2DM patients. Compared with the HCs, the T2DM patients demonstrated increased activation within their WM fronto-parietal networks, and activation strength was significantly correlated with WM performance. The T2DM patients also showed decreased FC within and between their WM networks. Our results indicate that the functional integration of WM sub-networks was disrupted in the complication-free T2DM patients and that strengthened regional activity in fronto-parietal networks may compensate for the WM impairment caused by T2DM.
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Affiliation(s)
- Yang Zhang
- Department of Radiology and Tianjin Key Laboratory of Functional Imaging, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Shan Lu
- Department of Radiology, Tianjin Medical University Metabolic Diseases Hospital, Tianjin, 300060, China
| | - Chunlei Liu
- Department of Radiology and Tianjin Key Laboratory of Functional Imaging, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Huimei Zhang
- Department of Radiology and Tianjin Key Laboratory of Functional Imaging, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Xuanhe Zhou
- Department of Radiology and Tianjin Key Laboratory of Functional Imaging, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Changlin Ni
- Department of Cardiology, Tianjin Medical University Metabolic Diseases Hospital, Tianjin, 300060, China
| | - Wen Qin
- Department of Radiology and Tianjin Key Laboratory of Functional Imaging, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Quan Zhang
- Department of Radiology and Tianjin Key Laboratory of Functional Imaging, Tianjin Medical University General Hospital, Tianjin 300052, China
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20
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Neuropsychological profile in new-onset benign epilepsy with centrotemporal spikes (BECTS): Focusing on executive functions. Epilepsy Behav 2016; 54:71-9. [PMID: 26667848 DOI: 10.1016/j.yebeh.2015.11.010] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Revised: 11/08/2015] [Accepted: 11/09/2015] [Indexed: 12/18/2022]
Abstract
PURPOSE Increased evidence of subnormal neuropsychological functioning in new-onset childhood epilepsy has been obtained, although results are still rare and controversial. With a prospective study, we aimed to define the very early neuropsychological profile of children with benign epilepsy with centrotemporal spikes (BECTS), including executive functions (EF) because of their key role in learning. Additionally, we enrolled drug-naïve children, with a NREM sleep frequency of discharges <85% and with a Performance Intelligence Quotient equal or superior to 85, in order to exclude additional effects on the neuropsychological functioning. METHODS Fifteen school-aged children with BECTS (mean age: 8.8years, standard deviation [SD]: 2.4years) and fifteen healthy children (mean age: 9.2years, [SD]: 2.5years) were enrolled and assessed with a comprehensive neuropsychological battery. The assessment included domain-specific standardized tests of language, EF, academic skills, visuomotor and visuospatial skills, and short-term memory. A p-value<0.05 was considered significant. RESULTS Significant differences between patients and controls emerged with respect to 3 domains. Language was affected in color naming (p=.026), spoonerism (p=.003), and phonemic synthesis (p=.009). Executive functions appeared inadequate in the five point test with respect to the number of correct figures (p=.003) and errors (p=.008). In the domain of academic skills, significant differences between groups emerged regarding the number of mistakes in nonword writing (p=.001), nonword reading speed (p=.027), nonword reading number of mistakes (p=.019), and word reading errors (p=.023). DISCUSSION Results showed that children with new-onset BECTS may demonstrate a range of neuropsychological dysfunctions, particularly affecting executive attention, despite a normal IQ, a low frequency of NREM sleep discharges, and the absence of drugs. These difficulties indicate a frontal dysfunction with cascading effects on language and academic skills. The inclusion of EF in the assessment battery and in the intervention since the very onset is warranted in order to avoid further and persistent academic difficulties.
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21
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Edgin JO, Clark CAC, Massand E, Karmiloff-Smith A. Building an adaptive brain across development: targets for neurorehabilitation must begin in infancy. Front Behav Neurosci 2015; 9:232. [PMID: 26441566 PMCID: PMC4565977 DOI: 10.3389/fnbeh.2015.00232] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Accepted: 08/17/2015] [Indexed: 11/13/2022] Open
Abstract
Much progress has been made toward behavioral and pharmacological intervention in intellectual disability, which was once thought too difficult to treat. Down syndrome (DS) research has shown rapid advances, and clinical trials are currently underway, with more on the horizon. Here, we review the literature on the emergent profile of cognitive development in DS, emphasizing that treatment approaches must consider how some "end state" impairments, such as language deficits, may develop from early alterations in neural systems beginning in infancy. Specifically, we highlight evidence suggesting that there are pre- and early postnatal alterations in brain structure and function in DS, resulting in disturbed network function across development. We stress that these early alterations are likely amplified by Alzheimer's disease (AD) progression and poor sleep. Focusing on three network hubs (prefrontal cortex, hippocampus, and cerebellum), we discuss how these regions may relate to evolving deficits in cognitive function in individuals with DS, and to their language profile in particular.
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Affiliation(s)
- Jamie O. Edgin
- Department of Psychology, University of ArizonaTucson, AZ, USA
- Sonoran University Center for Excellence in Developmental DisabilitiesTucson, AZ, USA
| | | | - Esha Massand
- Centre for Brain and Cognitive Development, Birkbeck, University of LondonLondon, UK
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22
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Yang Z, Jutagir DR, Koyama MS, Craddock RC, Yan CG, Shehzad Z, Castellanos FX, Di Martino A, Milham MP. Intrinsic brain indices of verbal working memory capacity in children and adolescents. Dev Cogn Neurosci 2015; 15:67-82. [PMID: 26299314 PMCID: PMC4696540 DOI: 10.1016/j.dcn.2015.07.007] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2015] [Revised: 07/03/2015] [Accepted: 07/31/2015] [Indexed: 01/04/2023] Open
Abstract
Digit span forward and backward performance has unique intrinsic neural correlates. Dorsal anterior cingulate gyrus plays distinctive roles in forward and backward span. Angular gyrus and subcallosum associated with forward digit span performance depending on age. Visual cortex and ventrolateral PFC linked to backward digit span performance depending on age. Age-related brain–behavior relationship changes are more robust for forward span.
Working memory (WM) is central to the acquisition of knowledge and skills throughout childhood and adolescence. While numerous behavioral and task-based functional magnetic resonance imaging (fMRI) studies have examined WM development, few have used resting-state fMRI (R-fMRI). Here, we present a systematic R-fMRI examination of age-related differences in the neural indices of verbal WM performance in a cross-sectional pediatric sample (ages: 7–17; n = 68), using data-driven approaches. Verbal WM capacity was measured with the digit span task, a commonly used educational and clinical assessment. We found distinct neural indices of digit span forward (DSF) and backward (DSB) performance, reflecting their unique neuropsychological demands. Regardless of age, DSB performance was related to intrinsic properties of brain areas previously implicated in attention and cognitive control, while DSF performance was related to areas less commonly implicated in verbal WM storage (precuneus, lateral visual areas). From a developmental perspective, DSF exhibited more robust age-related differences in brain–behavior relationships than DSB, and implicated a broader range of networks (ventral attention, default, somatomotor, limbic networks) – including a number of regions not commonly associated with verbal WM (angular gyrus, subcallosum). These results highlight the importance of examining the neurodevelopment of verbal WM and of considering regions beyond the “usual suspects”.
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Affiliation(s)
- Zhen Yang
- Center for the Developing Brain, Child Mind Institute, 445 Park Avenue, New York, NY 10022, USA; Nathan Kline Institute for Psychiatric Research, Orangeburg, NY 10962, USA
| | - Devika R Jutagir
- Department of Psychology, University of Miami, Coral Gables, FL 33146, USA
| | - Maki S Koyama
- Center for the Developing Brain, Child Mind Institute, 445 Park Avenue, New York, NY 10022, USA; Nathan Kline Institute for Psychiatric Research, Orangeburg, NY 10962, USA
| | - R Cameron Craddock
- Center for the Developing Brain, Child Mind Institute, 445 Park Avenue, New York, NY 10022, USA; Nathan Kline Institute for Psychiatric Research, Orangeburg, NY 10962, USA
| | - Chao-Gan Yan
- Nathan Kline Institute for Psychiatric Research, Orangeburg, NY 10962, USA; The Child Study Center at NYU Langone Medical Center, New York, NY 10016, USA
| | - Zarrar Shehzad
- Nathan Kline Institute for Psychiatric Research, Orangeburg, NY 10962, USA; Department of Psychology, Yale University, New Haven, CT 06520, USA
| | - F Xavier Castellanos
- Nathan Kline Institute for Psychiatric Research, Orangeburg, NY 10962, USA; The Child Study Center at NYU Langone Medical Center, New York, NY 10016, USA
| | - Adriana Di Martino
- The Child Study Center at NYU Langone Medical Center, New York, NY 10016, USA
| | - Michael P Milham
- Center for the Developing Brain, Child Mind Institute, 445 Park Avenue, New York, NY 10022, USA; Nathan Kline Institute for Psychiatric Research, Orangeburg, NY 10962, USA.
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23
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Lou W, Shi L, Wang D, Tam CWC, Chu WCW, Mok VCT, Cheng ST, Lam LCW. Decreased activity with increased background network efficiency in amnestic MCI during a visuospatial working memory task. Hum Brain Mapp 2015; 36:3387-403. [PMID: 26032982 DOI: 10.1002/hbm.22851] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Revised: 05/02/2015] [Accepted: 05/11/2015] [Indexed: 12/25/2022] Open
Abstract
Recent studies have demonstrated the working memory impairment in patients with amnestic mild cognitive impairment (aMCI). However, the neurophysiological basis of the working memory deficit in aMCI is poorly understood. The aim of this study was to explore the abnormal activity during encoding and recognition procedures, as well as the reorganization of the background network maintaining the working memory state in aMCI. Using event-related fMRI during a visuospatial working memory task with three recognition difficulty levels, the task-related activations and network efficiency of the background network in 17 aMCI patients and 19 matched controls were investigated. Compared with cognitively healthy controls, patients with aMCI showed significantly decreased activity in the frontal and visual cortices during the encoding phase, while during the recognition phase, decreased activity was detected in the frontal, parietal, and visual regions. In addition, increased local efficiency was also observed in the background network of patients with aMCI. The results suggest patients with aMCI showed impaired encoding and recognition functions during the visuospatial working memory task, and may pay more effort to maintain the cognitive state. This study extends our understanding of the impaired working memory function in aMCI and provides a new perspective to investigate the compensatory mechanism in aMCI.
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Affiliation(s)
- Wutao Lou
- Department of Imaging and Interventional Radiology, The Chinese University of Hong Kong, Hong Kong.,Research Center for Medical Image Computing, The Chinese University of Hong Kong, Hong Kong
| | - Lin Shi
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong.,Chow Yuk Ho Center of Innovative Technology for Medicine, The Chinese University of Hong Kong, Hong Kong
| | - Defeng Wang
- Department of Imaging and Interventional Radiology, The Chinese University of Hong Kong, Hong Kong.,Research Center for Medical Image Computing, The Chinese University of Hong Kong, Hong Kong.,Department of Biomedical Engineering and Shun Hing Institute of Advanced Engineering, The Chinese University of Hong Kong, Hong Kong.,Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China
| | - Cindy W C Tam
- Department of Psychiatry, North District Hospital, Hong Kong
| | - Winnie C W Chu
- Department of Imaging and Interventional Radiology, The Chinese University of Hong Kong, Hong Kong
| | - Vincent C T Mok
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong
| | - Sheung-Tak Cheng
- Department of Health and Physical Education, Hong Kong Institute of Education, Hong Kong.,Department of Clinical Psychology, Norwich Medical School, University of East Anglia, Norfolk, United Kingdom
| | - Linda C W Lam
- Department of Psychiatry, The Chinese University of Hong Kong, Hong Kong
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24
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White T, Muetzel R, Schmidt M, Langeslag SJE, Jaddoe V, Hofman A, Calhoun VD, Verhulst FC, Tiemeier H. Time of acquisition and network stability in pediatric resting-state functional magnetic resonance imaging. Brain Connect 2015; 4:417-27. [PMID: 24874884 DOI: 10.1089/brain.2013.0195] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Resting-state functional magnetic resonance imaging (rs-fMRI) has been shown to elucidate reliable patterns of brain networks in both children and adults. Studies in adults have shown that rs-fMRI acquisition times of ∼5 to 6 min provide adequate sampling to produce stable spatial maps of a number of different brain networks. However, it is unclear whether the acquisition time directly translates to studies of children. While there are many similarities between the brains of children and adults, many differences are also evident. Children have increased metabolism, differences in brain morphology and connectivity strengths, greater brain plasticity, and increased brain noise. Furthermore, there are differences in physiologic parameters, such as heart and respiratory rates, and compliance of the blood vessels. These developmental differences could translate into different acquisition times for rs-fMRI studies in pediatric populations. Longer scan times, however, increase the subject burden and the risk for greater movement, especially in children. Thus, the goal of this study was to assess the optimum acquisition time of rs-fMRI to extract stable brain networks in school-age children. We utilized fuzzy set theory in 84 six-to-eight year-old children and found that eight networks, including the default mode, salience, frontal, left frontoparietal, right frontoparietal, sensorimotor, auditory, and visual networks, all stabilized after ∼5½ min. The sensorimotor network showed the least stability, whereas the salience and auditory networks showed the greatest stability. A secondary analysis using dual regression confirmed these results. In conclusion, in young children with little head motion, rs-fMRI acquisition times of ∼5½ min can extract the full complement of brain networks.
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Affiliation(s)
- Tonya White
- 1 Department of Child and Adolescent Psychiatry, Erasmus University Medical Centre-Sophia Children's Hospital , Rotterdam, The Netherlands
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25
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Steinmann E, Schmalor A, Prehn-Kristensen A, Wolff S, Galka A, Möhring J, Gerber WD, Petermann F, Stephani U, Siniatchkin M. Developmental changes of neuronal networks associated with strategic social decision-making. Neuropsychologia 2014; 56:37-46. [PMID: 24412687 DOI: 10.1016/j.neuropsychologia.2013.12.025] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2013] [Revised: 12/25/2013] [Accepted: 12/31/2013] [Indexed: 12/19/2022]
Abstract
OBJECTIVES One of the important prerequisites for successful social interaction is the willingness of each individual to cooperate socially. Using the ultimatum game, several studies have demonstrated that the process of decision-making to cooperate or to defeat in interaction with a partner is associated with activation of the dorsolateral prefrontal cortex (DLPFC), anterior cingulate cortex (ACC), anterior insula (AI), and inferior frontal cortex (IFC). This study investigates developmental changes in this neuronal network. METHODS 15 healthy children (8-12 years), 15 adolescents (13-18 years) and 15 young adults (19-28 years) were investigated using the ultimatum game. Neuronal networks representing decision-making based on strategic thinking were characterized using functional MRI. RESULTS In all age groups, the process of decision-making in reaction to unfair offers was associated with hemodynamic changes in similar regions. Compared with children, however, healthy adults and adolescents revealed greater activation in the IFC and the fusiform gyrus, as well as the nucleus accumbens. In contrast, healthy children displayed more activation in the AI, the dorsal part of the ACC, and the DLPFC. There were no differences in brain activations between adults and adolescents. CONCLUSION The neuronal mechanisms underlying strategic social decision making are already developed by the age of eight. Decision-making based on strategic thinking is associated with age-dependent involvement of different brain regions. Neuronal networks underlying theory of mind and reward anticipation are more activated in adults and adolescents with regard to the increasing perspective taking with age. In relation to emotional reactivity and respective compensatory coping in younger ages, children have higher activations in a neuronal network associated with emotional processing and executive control.
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Affiliation(s)
- Elisabeth Steinmann
- Department of Neuropediatrics, University Hospital Schleswig-Holstein, Germany; Institute of Medical Psychology, University Hospital Schleswig-Holstein, Diesterwegstr. 10-12, D-24105 Kiel, Germany; Department of Neurosurgery, University Hospital Schleswig-Holstein, Germany.
| | - Antonia Schmalor
- Department of Neuropediatrics, University Hospital Schleswig-Holstein, Germany
| | - Alexander Prehn-Kristensen
- Center for Integrative Psychiatry, Department of Child and Adolescent Psychiatry and Psychotherapy, Christian-Albrechts University, Kiel, Germany
| | - Stephan Wolff
- Department of Neuroradiology, University Hospital Schleswig-Holstein, Germany
| | - Andreas Galka
- Department of Neuropediatrics, University Hospital Schleswig-Holstein, Germany
| | - Jan Möhring
- Department of Neuropediatrics, University Hospital Schleswig-Holstein, Germany
| | - Wolf-Dieter Gerber
- Department of Neurosurgery, University Hospital Schleswig-Holstein, Germany
| | - Franz Petermann
- Center of Clinical Psychology and Rehabilitation, University of Bremen, Germany
| | - Ulrich Stephani
- Department of Neuropediatrics, University Hospital Schleswig-Holstein, Germany
| | - Michael Siniatchkin
- Clinic for Child and Adolescents Psychiatry, Goethe University, Frankfurt, Germany
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