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Petzold M, Bunzeck N. Impaired episodic memory in PTSD patients - A meta-analysis of 47 studies. Front Psychiatry 2022; 13:909442. [PMID: 36245884 PMCID: PMC9553990 DOI: 10.3389/fpsyt.2022.909442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 08/16/2022] [Indexed: 11/13/2022] Open
Abstract
Episodic memory impairments beyond the traumatic event might be a characteristic hallmark of post-traumatic stress disorder (PTSD). Although several studies support such a claim, empirical findings are inconsistent. Therefore, we performed a random-effects meta-analysis including data from a total of 47 studies and 3,062 subjects. As main finding, we can show that PTSD patients show episodic memory deficits compared to all controls. This effect was significantly stronger for PTSD vs. non-traumatized healthy controls as compared to PTSD vs. traumatized controls without PTSD. Finally, episodic memory impairments in PTSD were most pronounced in verbal memory tests as compared to non-verbal memory tests. Our results provide new evidence that PTSD is characterized by impaired episodic long-term memory beyond the traumatic event, and these deficits are particularly pronounced in verbal memory. We will discuss our findings in the context of physiological, psychological and trauma related memory models. From a broader perspective, our findings may have implications for the treatment of PTSD by suggesting that the assessment and, if necessary, training of memory deficits could be included as part of diagnostics and psychotherapeutic treatment.
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Affiliation(s)
- Maria Petzold
- Department of Psychology, University of Lübeck, Lübeck, Germany
| | - Nico Bunzeck
- Department of Psychology, University of Lübeck, Lübeck, Germany.,Center of Brain, Behavior, and Metabolism, University of Lübeck, Lübeck, Germany
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2
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Shikimoto R, Noda Y, Kida H, Nakajima S, Tsugawa S, Mimura Y, Ochi R, Takayama M, Niimura H, Mimura M. Association between resilience and cortical thickness in the posterior cingulate cortex and the temporal pole in Japanese older people: A population-based cross-sectional study. J Psychiatr Res 2021; 142:89-100. [PMID: 34330025 DOI: 10.1016/j.jpsychires.2021.07.026] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/26/2020] [Revised: 06/06/2021] [Accepted: 07/13/2021] [Indexed: 11/18/2022]
Abstract
BACKGROUND Resilience is a crucial factor preventing the onset of mental illness and contributing to the well-being and healthy longevity, whose neural bases are not fully elucidated in older people. The present study aimed to identify the cortical thickness associating with resilience in older adults. METHODS This is a part of the cross-sectional Arakawa geriatric cohort study for people aged 65 years or older, consisting of 1001 individuals. A Self-Reported Resilience Scale (RS), neuropsychological batteries, face-to-face interviews for diagnosis, and a three-dimensional T1-weighted magnetic resonance imaging were conducted. Cortical thickness was computed by the FreeSurfer. The relationships among cortical thickness, total RS score, and clinico-demographic data were investigated using univariate and multivariable regression analyses. RESULTS The total RS score was correlated with age, education, and scores of the Mini-Mental State Examination (MMSE) and Geriatric Depression Scale (GDS) in univariate analyses. The total RS score was associated with cortical thicknesses in the left posterior cingulate (β [95 % CI of B] = 0.07 [0.16-14.84]) and the left temporal pole (β [95 % CI of B] = 0.08 [0.63-9.93]) after adjusting sex, age, imaging acquisition site, education, MMSE and GDS scores, hypertension, hyperlipidemia, diabetes mellitus, Barthel index, BMI, and living situation in multivariable regression analyses. CONCLUSION The present analyses suggest that the resilience capacity may be related to the cortical thickness in the posterior cingulate and temporal cortices in older adults. Our findings warrant further longitudinal studies to confirm the causal relationship between stress events, resilience, and brain structures.
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Affiliation(s)
- Ryo Shikimoto
- Department of Neuropsychiatry, Keio University School of Medicine, Tokyo, Japan; Sakuragaoka Memorial Hospital, Tokyo, Japan.
| | - Yoshihiro Noda
- Department of Neuropsychiatry, Keio University School of Medicine, Tokyo, Japan.
| | - Hisashi Kida
- Department of Neuropsychiatry, Keio University School of Medicine, Tokyo, Japan.
| | - Shinichiro Nakajima
- Department of Neuropsychiatry, Keio University School of Medicine, Tokyo, Japan.
| | - Sakiko Tsugawa
- Department of Neuropsychiatry, Keio University School of Medicine, Tokyo, Japan.
| | - Yu Mimura
- Department of Neuropsychiatry, Keio University School of Medicine, Tokyo, Japan.
| | - Ryo Ochi
- Department of Neuropsychiatry, Keio University School of Medicine, Tokyo, Japan.
| | - Midori Takayama
- Faculty of Science and Technology, Keio University, Yokohama, Kanagawa, Japan.
| | - Hidehito Niimura
- Department of Neuropsychiatry, Keio University School of Medicine, Tokyo, Japan.
| | - Masaru Mimura
- Department of Neuropsychiatry, Keio University School of Medicine, Tokyo, Japan.
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Rehman Y, Zhang C, Ye H, Fernandes L, Marek M, Cretu A, Parkinson W. The extent of the neurocognitive impairment in elderly survivors of war suffering from PTSD: meta-analysis and literature review. AIMS Neurosci 2020; 8:47-73. [PMID: 33490372 PMCID: PMC7815483 DOI: 10.3934/neuroscience.2021003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Accepted: 11/23/2020] [Indexed: 11/18/2022] Open
Abstract
Objectives We performed a meta-analysis and systematic review on elderly survivors of war suffering from PTSD to estimate the variability in their cognitive impairment based on individual neuropsychological tests. Methods We included case control studies that explored the association of cognitive deficits in elderly PTSD civilian survivor of wars (age >60 years), using MEDLINE, Embase and PsycINFO from the inception to January 2018. We compared the cognitive performances in three comparisons i) PTSD+ vs. PTSD− civilian survivors of war; ii) PTSD+ vs. Control and iii) PTSD− vs. Control. The risk of bias was assessed using the Newcastle-Ottawa Scale for case-control studies. Results Out of 2939 titles and abstracts, 13 studies were eligible for data extraction. As compared to PTSD− civilian survivors of war, PTSD+ civilian survivors of war demonstrated significant deficits on TMT-A, TMT-B, Digit span backward, explicit memory low pair associate, CVLT recognition, WAIS-verbal and non-verbal tests. As compared to health controls, PTSD+ survivors demonstrated significantly lower performance on explicit memory low pair and high associate, RAVLT immediate and delayed recall, CVLT delayed and short cued recall. Performance on the neuropsychological test between PTSD− survivors of war and controls was not significant for all tests. Conclusion The pattern suggests that PTSD+ survivors of war had poorer performance in tasks requiring processing speed, executive function, attention, working memory and learning. The magnitude of the cognitive deficits in our pooled analysis was small to moderate depending on the neuropsychological test. Most of our pooled analysis suffered from a high risk of bias, which lowered the confidence in our results.
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Affiliation(s)
- Yasir Rehman
- Health Research Methodology, McMaster University, Hamilton, ON, Canada
| | - Cindy Zhang
- Faculty of Health Sciences, McMaster University, Hamilton ON, Canada
| | - Haolin Ye
- Faculty of Life Sciences, McMaster University, Hamilton ON, Canada
| | - Lionel Fernandes
- Faculty of Life Sciences, McMaster University, Hamilton ON, Canada
| | - Mathieu Marek
- Faculty of Life Sciences, McMaster University, Hamilton ON, Canada
| | - Andrada Cretu
- Faculty of Life Sciences, McMaster University, Hamilton ON, Canada
| | - William Parkinson
- School of Rehabilitation Science, McMaster University, Hamilton ON, Canada
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Lawrence KA, Pachner TM, Long MM, Henderson S, Schuman DL, Plassman BL. Risk and protective factors of dementia among adults with post-traumatic stress disorder: a systematic review protocol. BMJ Open 2020; 10:e035517. [PMID: 32499267 PMCID: PMC7282332 DOI: 10.1136/bmjopen-2019-035517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 03/03/2020] [Accepted: 05/01/2020] [Indexed: 11/24/2022] Open
Abstract
INTRODUCTION Post-traumatic stress disorder (PTSD) is associated with an increased risk of dementia. Individual epidemiological studies have controlled for several confounders of the relationship between PTSD and increased dementia risk, yet particular risk factors underlying this relationship have not been determined. This systematic review protocol aims to identify risk and protective factors of dementia among adults with PTSD. METHODS AND ANALYSIS We will conduct an electronic search of the databases: PubMed, CINAHL, PsychINFO, The Cochrane Library, Scopus and ProQuest Dissertation and Theses Global. After screening the studies, quantitative synthesis will be performed, if possible. Otherwise, a narrative synthesis will be performed. We will include randomised controlled trials and other types of research evidence including longitudinal cohort studies. Strength of evidence will be assessed using the Grading of Recommendations, Assessment, Development and Evaluations method. Examples of variables that will be extracted are: year of PTSD diagnosis, comorbid conditions, health behaviours, pharmacological treatments and year of mild cognitive impairment or dementia diagnosis. We developed this systematic review protocol according to the Preferred Reporting Items for Systematic Review and Meta-Analysis Protocols 2015 statement. ETHICS AND DISSEMINATION The proposed study will not collect individual-level data and, therefore, does not require ethical approval. Results of this study will provide current evidence on risk and protective factors of dementia in adults with PTSD. Findings will be disseminated in peer-reviewed publications and conference presentations. PROSPERO REGISTRATION NUMBER CRD42019128553.
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Affiliation(s)
- Karen A Lawrence
- College of Social Work, University of Kentucky, Lexington, Kentucky, USA
| | - Theresia M Pachner
- College of Social Work, University of Kentucky, Lexington, Kentucky, USA
| | - Molly M Long
- College of Social Work, University of Kentucky, Lexington, Kentucky, USA
| | | | - Donna L Schuman
- College of Social Work, University of Kentucky, Lexington, Kentucky, USA
| | - Brenda L Plassman
- Department of Neurology, Duke University School of Medicine, Durham, North Carolina, USA
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Quinones MM, Gallegos AM, Lin FV, Heffner K. Dysregulation of inflammation, neurobiology, and cognitive function in PTSD: an integrative review. COGNITIVE, AFFECTIVE & BEHAVIORAL NEUROSCIENCE 2020; 20:455-480. [PMID: 32170605 PMCID: PMC7682894 DOI: 10.3758/s13415-020-00782-9] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Compelling evidence from animal and human research suggest a strong link between inflammation and posttraumatic stress disorder (PTSD). Furthermore, recent findings support compromised neurocognitive function as a key feature of PTSD, particularly with deficits in attention and processing speed, executive function, and memory. These cognitive domains are supported by brain structures and neural pathways that are disrupted in PTSD and which are implicated in fear learning and extinction processes. The disruption of these supporting structures potentially results from their interaction with inflammation. Thus, the converging evidence supports a model of inflammatory dysregulation and cognitive dysfunction as combined mechanisms underpinning PTSD symptomatology. In this review, we summarize evidence of dysregulated inflammation in PTSD and further explore how the neurobiological underpinnings of PTSD, in the context of fear learning and extinction acquisition and recall, may interact with inflammation. We then present evidence for cognitive dysfunction in PTSD, highlighting findings from human work. Potential therapeutic approaches utilizing novel pharmacological and behavioral interventions that target inflammation and cognition also are discussed.
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Affiliation(s)
- Maria M Quinones
- Elaine C. Hubbard Center for Nursing Research on Aging, School of Nursing, University of Rochester Medical Center, Rochester, NY, 14642, USA.
| | - Autumn M Gallegos
- Department of Psychiatry, University of Rochester Medical Center, Rochester, NY, USA
| | - Feng Vankee Lin
- Elaine C. Hubbard Center for Nursing Research on Aging, School of Nursing, University of Rochester Medical Center, Rochester, NY, 14642, USA
- Department of Psychiatry, University of Rochester Medical Center, Rochester, NY, USA
- Department of Neuroscience, University of Rochester Medical Center, Rochester, NY, USA
| | - Kathi Heffner
- Elaine C. Hubbard Center for Nursing Research on Aging, School of Nursing, University of Rochester Medical Center, Rochester, NY, 14642, USA
- Department of Psychiatry, University of Rochester Medical Center, Rochester, NY, USA
- Division of Geriatrics & Aging, Department of Medicine, University of Rochester Medical Center, Rochester, NY, USA
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Early-Life Conditions and Cognitive Function in Middle-and Old-Aged Chinese Adults: A Longitudinal Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17103451. [PMID: 32429157 PMCID: PMC7277849 DOI: 10.3390/ijerph17103451] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Revised: 05/09/2020] [Accepted: 05/13/2020] [Indexed: 12/22/2022]
Abstract
A range of previous studies have suggested that early-life conditions (ELCs) are associated with various health problems throughout life in Western societies. The aim of this study was to investigate whether, and how, early-life conditions predicted the level and trajectory of cognitive function in middle- and old-aged Chinese adults. Data were obtained from China Health and Retirement Longitudinal Study which comprised 16,258 adults at baseline. Cognitive function was assessed using mental intactness and episodic memory and ELCs were measured by early parental death, childhood socioeconomic status (SES), food deprivation, and childhood health. Growth curve modeling was used to examine the trajectory of cognitive function (three waves in a 6-year period)with particular attention paid to the effects of ELCs on cognition. The results show that early maternal death is associated with the baseline cognitive level among middle- and old-aged Chinese adults (β range between −0.44 and −0.35, p < 0.05), but that this association is also largely attenuated by adulthood education. Higher childhood SES predicts an enhanced level of baseline cognition in both age groups (β range between 0.08 and 1.27, p < 0.001), but only protects against cognitive decline at baseline in middle-aged adults. Participants who were less healthy during childhood tended to have lower cognitive performance than those who had enjoyed good health (β range between −0.36 and −0.14, p < 0.05). The results of this study highlight the detrimental impact of deleterious ELCs on cognitive function throughout later life.
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Morgan DP, Tamminen J, Seale-Carlisle TM, Mickes L. The impact of sleep on eyewitness identifications. ROYAL SOCIETY OPEN SCIENCE 2019; 6:170501. [PMID: 31903193 PMCID: PMC6936295 DOI: 10.1098/rsos.170501] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Accepted: 11/14/2019] [Indexed: 06/10/2023]
Abstract
Sleep aids the consolidation of recently acquired memories. Evidence strongly indicates that sleep yields substantial improvements on recognition memory tasks relative to an equivalent period of wake. Despite the known benefits that sleep has on memory, researchers have not yet investigated the impact of sleep on eyewitness identifications. Eyewitnesses to crimes are often presented with a line-up (which is a type of recognition memory test) that contains the suspect (who is innocent or guilty) and fillers (who are known to be innocent). Sleep may enhance the ability to identify the guilty suspect and not identify the innocent suspect (i.e. discriminability). Sleep may also impact reliability (i.e. the likelihood that the identified suspect is guilty). In the current study, we manipulated the presence or the absence of sleep in a forensically relevant memory task. Participants witnessed a video of a mock crime, made an identification or rejected the line-up, and rated their confidence. Critically, some participants slept between witnessing the crime and making a line-up decision, while others remained awake. The prediction that participants in the sleep condition would have greater discriminability compared to participants in the wake condition was not supported. There were also no differences in reliability.
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Affiliation(s)
- D. P. Morgan
- Department of Clinical Psychology, University of Heidelberg, Mannheim, Germany
- Department of Addiction Behavior and Addiction Medicine, University of Heidelberg, Mannheim, Germany
- Department of Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - J. Tamminen
- Department of Psychology, Royal Holloway, University of London, Egham, UK
| | | | - L. Mickes
- Department of Psychology, University of Bristol, Bristol, UK
- Department of Psychology, University of California, San Diego, CA, USA
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Godoy LD, Rossignoli MT, Delfino-Pereira P, Garcia-Cairasco N, de Lima Umeoka EH. A Comprehensive Overview on Stress Neurobiology: Basic Concepts and Clinical Implications. Front Behav Neurosci 2018; 12:127. [PMID: 30034327 PMCID: PMC6043787 DOI: 10.3389/fnbeh.2018.00127] [Citation(s) in RCA: 323] [Impact Index Per Article: 53.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 06/06/2018] [Indexed: 12/20/2022] Open
Abstract
Stress is recognized as an important issue in basic and clinical neuroscience research, based upon the founding historical studies by Walter Canon and Hans Selye in the past century, when the concept of stress emerged in a biological and adaptive perspective. A lot of research after that period has expanded the knowledge in the stress field. Since then, it was discovered that the response to stressful stimuli is elaborated and triggered by the, now known, stress system, which integrates a wide diversity of brain structures that, collectively, are able to detect events and interpret them as real or potential threats. However, different types of stressors engage different brain networks, requiring a fine-tuned functional neuroanatomical processing. This integration of information from the stressor itself may result in a rapid activation of the Sympathetic-Adreno-Medullar (SAM) axis and the Hypothalamus-Pituitary-Adrenal (HPA) axis, the two major components involved in the stress response. The complexity of the stress response is not restricted to neuroanatomy or to SAM and HPA axes mediators, but also diverge according to timing and duration of stressor exposure, as well as its short- and/or long-term consequences. The identification of neuronal circuits of stress, as well as their interaction with mediator molecules over time is critical, not only for understanding the physiological stress responses, but also to understand their implications on mental health.
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Affiliation(s)
- Lívea Dornela Godoy
- Physiology Department, Ribeirão Preto School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Matheus Teixeira Rossignoli
- Department of Neuroscience and Behavioral Sciences, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
| | - Polianna Delfino-Pereira
- Department of Neuroscience and Behavioral Sciences, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
| | - Norberto Garcia-Cairasco
- Physiology Department, Ribeirão Preto School of Medicine, University of São Paulo, São Paulo, Brazil
- Department of Neuroscience and Behavioral Sciences, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
| | - Eduardo Henrique de Lima Umeoka
- Department of Neuroscience and Behavioral Sciences, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
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Evidence of Hippocampal Structural Alterations in Gulf War Veterans With Predicted Exposure to the Khamisiyah Plume. J Occup Environ Med 2017; 59:923-929. [DOI: 10.1097/jom.0000000000001082] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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10
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Karstens AJ, Rubin LH, Shankman SA, Ajilore O, Libon DJ, Kumar A, Lamar M. Investigating the separate and interactive associations of trauma and depression on neurocognition in urban dwelling adults. J Psychiatr Res 2017; 89:6-13. [PMID: 28130995 PMCID: PMC5373989 DOI: 10.1016/j.jpsychires.2017.01.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Revised: 01/06/2017] [Accepted: 01/12/2017] [Indexed: 11/29/2022]
Abstract
BACKGROUND Trauma and depression have each been associated with neurocognitive alterations, but their combined effect on neurocognition is unclear. We investigated the separate and interactive associations of trauma and depression on neurocognition in a sample of ethnically diverse urban dwellers, and explored the impact of age on these effects. METHODS 284 adults aged 30-89 were divided into groups based on their current depression and trauma history. Individuals meeting DSM-IV criteria for depression were considered Depressed (D+) and individuals rated through diagnostic interview as having trauma history were considered positive for Trauma (T+). Resulting Ns were 73 D+T+, 56 D+T-, 68 D-T+, and 87 D-T-. A principal component analysis of neuropsychological scores resulted in a 3-factor solution representing verbal learning/memory/recognition (VERBAL-LMR), visual learning/memory/recognition, and speeded attention/cognitive flexibility accounting for 70.21% of the variance. RESULTS Multivariable linear regressions adjusting for age revealed that Trauma, regardless of Depression, is associated with worse VERBAL-LMR performance. This Trauma association was driven by verbal list and prose passages learning and memory, but not recognition memory. Age-stratified (<60 versus ≥60 years) regressions revealed the Trauma association was only significant for older adults. No main or interactive effects for Depression were observed. CONCLUSIONS Trauma, regardless of Depression, is associated with worse verbal learning and memory, but not recognition performance. These results suggest that trauma exposure may negatively impact neurocognition. Clinicians working with adults in urban settings should query for trauma in addition to depression when considering subjective and objective measures of neurocognitive functioning, particularly in older adults.
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Affiliation(s)
| | - Leah H. Rubin
- Department of Psychiatry, University of Illinois at Chicago, Chicago, IL, 60612
| | - Stewart A. Shankman
- Department of Psychology, University of Illinois at Chicago, Chicago, IL, 60612,Department of Psychiatry, University of Illinois at Chicago, Chicago, IL, 60612
| | - Olusola Ajilore
- Department of Psychiatry, University of Illinois at Chicago, Chicago, IL, 60612
| | - David J. Libon
- Department of Geriatrics and Gerontology, New Jersey Institute for Successful Aging, School of Osteopathic Medicine-Rowan University, Stratford, NJ 08084
| | - Anand Kumar
- Department of Psychiatry, University of Illinois at Chicago, Chicago, IL, 60612
| | - Melissa Lamar
- Department of Psychology, University of Illinois at Chicago, Chicago, IL 60612, United States; Department of Psychiatry, University of Illinois at Chicago, Chicago, IL 60612, United States.
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Verbal memory functioning moderates psychotherapy treatment response for PTSD-Related nightmares. Behav Res Ther 2017; 91:24-32. [DOI: 10.1016/j.brat.2017.01.004] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Revised: 01/05/2017] [Accepted: 01/12/2017] [Indexed: 11/24/2022]
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Ainamani HE, Elbert T, Olema DK, Hecker T. PTSD symptom severity relates to cognitive and psycho-social dysfunctioning - a study with Congolese refugees in Uganda. Eur J Psychotraumatol 2017; 8:1283086. [PMID: 28326164 PMCID: PMC5328389 DOI: 10.1080/20008198.2017.1283086] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Revised: 10/07/2016] [Accepted: 12/03/2016] [Indexed: 10/26/2022] Open
Abstract
Background: In the ongoing conflict in the Democratic Republic of the Congo (DRC), civilians have been heavily exposed to traumatic stressors. Traumatizing experiences cumulatively heighten the risk for trauma-related disorders, and with it affect cognitive and psycho-social functioning. Objectives: We aimed at investigating the association between trauma-related disorders and cognitive and psycho-social functioning and hypothesized that PTSD symptom severity would negatively correlate with executive functioning, working memory and psycho-social functioning in everyday life. Method: In total, 323 Congolese refugees (mean age: 31.3 years) who arrived in the Ugandan Nakivale refugee settlement after January 2012 were assessed regarding their exposure to traumatic events, PTSD symptom severity (posttraumatic symptom scale interview), executive functioning (Tower of London), working memory performance (Corsi block tapping task) and psycho-social dysfunctioning (Luo functioning scale). Results: Hierarchical regression analyses indicated a significant negative association between PTSD symptom severity and working memory (β = -0.32, p < 0.001), as well as executive functions (β = -0.19, p = 0.003). Furthermore, the impairment of psycho-social functioning in everyday life was positively related with PTSD symptom severity (β = 0.70, p < 0.001), and negatively with executive functioning (β = -0.15, p = 0.003). However, working memory performance was not significantly related to psycho-social dysfunctioning (β = 0.09, p > 0.05). Conclusion: Trauma survivors not only suffer from the core PTSD symptoms but also from impaired cognitive functioning. PTSD symptom severity seems furthermore to be related to impaired psycho-social functioning. Our findings suggest that trauma-related mental health problems may heighten the risk for poverty and lack of prospect and further aggravate the consequences of war and conflict.
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Affiliation(s)
- Herbert E Ainamani
- Department of Psychology, Mbarara University of Science and Technology, Mbarara, Uganda; Department of Psychology, Bishop Stuart University, Mbarara, Uganda
| | - Thomas Elbert
- Department of Psychology, Mbarara University of Science and Technology, Mbarara, Uganda; Department of Psychology, University of Konstanz, Konstanz, Germany
| | - David K Olema
- Department of Psychology, Mbarara University of Science and Technology , Mbarara , Uganda
| | - Tobias Hecker
- Department of Psychology, University of Zurich , Zurich , Switzerland
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Abstract
OBJECTIVES Neuropsychological studies of posttraumatic stress disorder (PTSD) have revealed deficits in attention/working memory, processing speed, executive functioning, and retrospective memory. However, little is known about prospective memory (PM) in PTSD, a clinically relevant aspect of episodic memory that supports the encoding and retrieval of intentions for future actions. METHODS Here we examined PM performance in 40 veterans with PTSD compared to 38 trauma comparison (TC) veterans who were exposed to combat but did not develop PTSD. All participants were administered the Memory for Intentions Test (MIST; Raskin, Buckheit, & Sherrod, 2010), a standardized and validated measure of PM, alongside a comprehensive neurocognitive battery, structured diagnostic interviews for psychiatric conditions, and behavioral questionnaires. RESULTS Veterans with PTSD performed moderately lower than TC on time-based PM, with errors primarily characterized as PM failure errors (i.e., omissions). However, groups did not differ in event-based PM, ongoing task performance, or post-test recognition of PM intentions for each trial. Lower time-based PM performance was specifically related to hyperarousal symptoms of PTSD. Time-based-performance was also associated with neuropsychological measures of retrospective memory and executive functions in the PTSD group. Nevertheless, PTSD was significantly associated with poorer PM above and beyond age and performance in retrospective memory and executive functions. DISCUSSION Results provide initial evidence of PM dysfunction in PTSD, especially in strategic monitoring during time-based PM tasks. Findings have potential implications for everyday functioning and health behaviors in persons with PTSD, and deserve replication and future study. (JINS, 2016, 22, 724-734).
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Parlar M, Lee A, Haqqee Z, Rhooms L, Lanius RA, McKinnon MC. Parental bonding and neuropsychological performance are associated with episodic simulation of future events in trauma-exposed patients with major depressive disorder. Brain Behav 2016; 6:e00474. [PMID: 27458541 PMCID: PMC4951616 DOI: 10.1002/brb3.474] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Revised: 02/17/2016] [Accepted: 03/16/2016] [Indexed: 11/25/2022] Open
Abstract
INTRODUCTION Major depressive disorder (MDD) and trauma-related disorders are associated with deficits in remembering the past and imagining the future (i.e., episodic simulation). We examined parental bonding and neuropsychological performance in relation to episodic simulation in trauma-exposed patients with recurrent MDD. METHODS Trauma-exposed patients with MDD (n = 21) and matched controls (n = 20) completed a future-oriented Autobiographical Interview, the Parental Bonding Instrument, and a standardized neuropsychological battery. RESULTS Patients with major depressive disorder generated fewer episodic details for future neutral events compared to controls. Although higher reported levels of maternal care were associated with increased specificity of negative future events among the patient group, higher maternal overprotection was related to decreased specificity of negative and positive future events. Higher levels of performance on measures of intelligence, verbal memory, executive functioning, and sustained attention were associated with increased specificity of future events. CONCLUSIONS Maternal relations during childhood and neuropsychological performance are related to the specificity of episodic simulation in adult patients with MDD. Childhood experience continues to influence memory performance into adulthood.
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Affiliation(s)
- Melissa Parlar
- McMaster Integrative Neuroscience Discovery and Study McMaster University Hamilton Ontario Canada; Mood Disorders Program St. Joseph's Healthcare Hamilton Ontario Canada
| | - Alex Lee
- Mood Disorders Program St. Joseph's Healthcare Hamilton Ontario Canada
| | - Zeeshan Haqqee
- Mood Disorders Program St. Joseph's Healthcare Hamilton Ontario Canada
| | - Latisha Rhooms
- Mood Disorders Program St. Joseph's Healthcare Hamilton Ontario Canada
| | - Ruth A Lanius
- Department of Psychiatry University of Western Ontario London Ontario Canada
| | - Margaret C McKinnon
- McMaster Integrative Neuroscience Discovery and Study McMaster University Hamilton Ontario Canada; 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
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15
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Block SR, Liberzon I. Attentional processes in posttraumatic stress disorder and the associated changes in neural functioning. Exp Neurol 2016; 284:153-167. [PMID: 27178007 DOI: 10.1016/j.expneurol.2016.05.009] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2015] [Revised: 05/02/2016] [Accepted: 05/05/2016] [Indexed: 01/10/2023]
Abstract
Posttraumatic Stress Disorder (PTSD) is associated with alterations in attention at the behavioral and neural levels. However, there are conflicting findings regarding the specific type of attention impairments present in PTSD, as the commonly used tests of attention do not isolate the mechanisms behind attention abnormalities, and the constructs measured do not map onto the neurocircuits governing attention. Here, we review the literature on attention processing in PTSD and offer directions for future research to clarify these unanswered questions. First, using instruments that allow assessment of behavioral and neurophysiological attention components will be necessary to understand attention deficits in PTSD. Second, focus on intra-individual variability in addition to assessment of central tendency may help clarify some of the mixed findings. Third, longitudinal studies on attentional processes are warranted to determine how attention contributes to the development and maintenance of PTSD. Integration of behavioral and neural measures of attention will be useful in understanding the pathophysiology of PTSD.
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Affiliation(s)
- Stefanie R Block
- Department of Psychiatry, University of Michigan, Ann Arbor, MI, United States; Department of Psychology, University of Michigan, Ann Arbor, MI, United States; VA Ann Arbor Health Care System, Ann Arbor, MI, United States.
| | - Israel Liberzon
- Department of Psychiatry, University of Michigan, Ann Arbor, MI, United States; Department of Psychology, University of Michigan, Ann Arbor, MI, United States; VA Ann Arbor Health Care System, Ann Arbor, MI, United States
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16
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Parlar M, Frewen PA, Oremus C, Lanius RA, McKinnon MC. Dissociative symptoms are associated with reduced neuropsychological performance in patients with recurrent depression and a history of trauma exposure. Eur J Psychotraumatol 2016; 7:29061. [PMID: 26927902 PMCID: PMC4770862 DOI: 10.3402/ejpt.v7.29061] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2015] [Accepted: 12/01/2015] [Indexed: 01/30/2023] Open
Abstract
BACKGROUND Although preliminary work suggests that dissociative symptoms may impact neuropsychological performance in trauma-exposed populations, the relation between dissociation and cognitive performance has not been explored in patients with depression. OBJECTIVE The present study examined dissociative symptoms in relation to neuropsychological performance in participants with a primary diagnosis of recurrent major depressive disorder (MDD) and a history of trauma exposure. METHOD Twenty-three participants with MDD and 20 healthy controls who did not differ in age, sex, education, or IQ were assessed. In addition to a standardized neuropsychological battery assessing frontotemporally mediated cognitive processes, participants completed clinical measures assessing dissociative symptoms, illness severity, and past history of trauma exposure. RESULTS Among participants with MDD, greater severity of derealization was associated with reduced performance on measures of delayed visuospatial recall and recognition on a task of verbal memory recognition. In addition, more severe depersonalization was associated with slower processing speed and a response style lending itself toward better performance in a less active environment. CONCLUSIONS These findings point toward dissociative symptoms as a transdiagnostic factor associated with neuropsychological dysfunction in patients with depression and a history of trauma. Limitations and recommendations for future research are discussed.
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Affiliation(s)
- Melissa Parlar
- Department of Psychiatry and Behavioral Neurosciences, McMaster University, Hamilton, Canada.,Mood Disorders Research Unit, St. Joseph's Healthcare, Hamilton, Canada
| | - Paul A Frewen
- Department of Psychiatry, University of Western Ontario, London, Canada
| | - Carolina Oremus
- Department of Psychiatry and Behavioral Neurosciences, McMaster University, Hamilton, Canada.,Mood Disorders Research Unit, St. Joseph's Healthcare, Hamilton, Canada
| | - Ruth A Lanius
- Department of Psychiatry, University of Western Ontario, London, Canada
| | - Margaret C McKinnon
- Department of Psychiatry and Behavioral Neurosciences, McMaster University, Hamilton, Canada.,Mood Disorders Research Unit, St. Joseph's Healthcare, Hamilton, Canada.,Homewood Research Institute, Guelph, Canada;
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17
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Scott JC, Matt GE, Wrocklage KM, Crnich C, Jordan J, Southwick SM, Krystal JH, Schweinsburg BC. A quantitative meta-analysis of neurocognitive functioning in posttraumatic stress disorder. Psychol Bull 2015; 141:105-140. [PMID: 25365762 PMCID: PMC4293317 DOI: 10.1037/a0038039] [Citation(s) in RCA: 308] [Impact Index Per Article: 34.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Posttraumatic stress disorder (PTSD) is associated with regional alterations in brain structure and function that are hypothesized to contribute to symptoms and cognitive deficits associated with the disorder. We present here the first systematic meta-analysis of neurocognitive outcomes associated with PTSD to examine a broad range of cognitive domains and describe the profile of cognitive deficits, as well as modifying clinical factors and study characteristics. This report is based on data from 60 studies totaling 4,108 participants, including 1,779 with PTSD, 1,446 trauma-exposed comparison participants, and 895 healthy comparison participants without trauma exposure. Effect-size estimates were calculated using a mixed-effects meta-analysis for 9 cognitive domains: attention/working memory, executive functions, verbal learning, verbal memory, visual learning, visual memory, language, speed of information processing, and visuospatial abilities. Analyses revealed significant neurocognitive effects associated with PTSD, although these ranged widely in magnitude, with the largest effect sizes in verbal learning (d = -.62), speed of information processing (d = -.59), attention/working memory (d = -.50), and verbal memory (d =-.46). Effect-size estimates were significantly larger in treatment-seeking than community samples and in studies that did not exclude participants with attention-deficit/hyperactivity disorder, and effect sizes were affected by between-group IQ discrepancies and the gender composition of the PTSD groups. Our findings indicate that consideration of neuropsychological functioning in attention, verbal memory, and speed of information processing may have important implications for the effective clinical management of persons with PTSD. Results are further discussed in the context of cognitive models of PTSD and the limitations of this literature.
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Affiliation(s)
- J. Cobb Scott
- VISN4 Mental Illness Research, Education, and Clinical Center at the Philadelphia VA Medical Center, Philadelphia, PA, 19104, USA
- Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Georg E. Matt
- Department of Psychology, San Diego State University, San Diego, CA, 92182, USA
| | | | | | - Jessica Jordan
- VA Connecticut Healthcare System, West Haven, CT, 06516, USA
| | - Steven M. Southwick
- VA Connecticut Healthcare System, West Haven, CT, 06516, USA
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT, 06511, USA
| | - John H. Krystal
- VA Connecticut Healthcare System, West Haven, CT, 06516, USA
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT, 06511, USA
- Department of Neurobiology, Yale University School of Medicine, New Haven, CT 06510 USA
- Psychiatry Services, Yale-New Haven Hospital, New Haven, CT 06510
| | - Brian C. Schweinsburg
- VA Connecticut Healthcare System, West Haven, CT, 06516, USA
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT, 06511, USA
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18
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In-hospital acute stress symptoms are associated with impairment in cognition 1 year after intensive care unit admission. Ann Am Thorac Soc 2014; 10:450-7. [PMID: 23987665 DOI: 10.1513/annalsats.201303-060oc] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
RATIONALE Prior studies have found that cognitive dysfunction is common in intensive care unit (ICU) survivors. Yet, relatively little is known about potentially modifiable risk factors for longer-term post-ICU cognitive impairment. OBJECTIVES To determine if in-hospital acute stress symptoms were associated with impaired 12-month cognitive functioning among ICU survivors. METHODS We prospectively enrolled 150 nontrauma patients without cognitive impairment or a dementia diagnosis who were admitted to an ICU for more than 24 hours. Patients were interviewed before hospital discharge and again via telephone at 12 months post-ICU. MEASUREMENTS AND MAIN RESULTS Demographics and clinical information were obtained through medical record reviews and in-person interviews. In-hospital acute stress symptoms were assessed with the Posttraumatic Stress Disorder Checklist-Civilian Version. Twelve-month post-ICU cognition was assessed with the modified Telephone Interview for Cognitive Status. Follow-up interviews were completed with 120 (80%) patients. Patients' mean age at hospitalization was 48.2 years (SD, 13.7). In unadjusted analyses, a greater number of in-hospital acute stress symptoms was associated with significantly greater impairment in 12-month cognitive functioning (β, -0.1; 95% confidence interval, -0.2 to -0.004; P = 0.04). After adjusting for patient and clinical factors, in-hospital acute stress symptoms were independently associated with greater impairment in 12-month cognitive functioning (β, -0.1; 95% CI, -0.2 to -0.01; P = 0.03). CONCLUSIONS In-hospital acute stress symptoms may be a potentially modifiable risk factor for greater impairment in cognitive functioning post-ICU. Early interventions for at-risk ICU survivors may improve longer-term outcomes.
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Scheiner DL, Keilp J, Mindt MR, Burke AK, Oquendo MA, Mann JJ. Verbal learning deficits in posttraumatic stress disorder and depression. J Trauma Stress 2014; 27:291-8. [PMID: 24850268 DOI: 10.1002/jts.21921] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Verbal learning and memory deficits are frequently reported in posttraumatic stress disorder (PTSD), but may be a product of its psychiatric comorbidities, especially major depressive disorder (MDD). To evaluate this hypothesis, 25 medication-free patients with PTSD and comorbid MDD were compared to 148 medication-free patients with equally severe MDD alone and to 96 nonpatients on a measure of verbal learning and memory. Additional measures of attention, working memory, and executive function were administered to evaluate their contribution to verbal memory impairment. Patients with comorbid PTSD and MDD demonstrated the greatest deficit in verbal learning compared to both MDD patients and nonpatients (omnibus effect sizes ranged d = 0.41 to 0.50), one that was not accounted for by other cognitive deficits. Findings suggest that a current diagnosis of PTSD makes a contribution to verbal learning deficits beyond the effect of depression alone.
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Affiliation(s)
- Diane L Scheiner
- Department of Psychology, Fordham University, Bronx, New York, USA
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20
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Saar-Ashkenazy R, Cohen JE, Guez J, Gasho C, Shelef I, Friedman A, Shalev H. Reduced corpus-callosum volume in posttraumatic stress disorder highlights the importance of interhemispheric connectivity for associative memory. J Trauma Stress 2014; 27:18-26. [PMID: 24473965 DOI: 10.1002/jts.21887] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Memory deficits are a common complaint of patients with posttraumatic stress disorder (PTSD). Despite vivid trauma-related memory, previous studies report memory impairment for nontrauma-related stimuli when compared to controls, specifically in associative memory (Guez et al., 2011). Healthy individuals show hemispheric memory asymmetry with left-prefrontal lateralization of encoding and right-prefrontal lateralization of episodic retrieval, suggesting a role for interhemispheric communication in memory-related tasks (Gazzaniga, ; Ringo, Doty, Demeter, & Simard, ). Because brain magnetic resonance imaging (bMRI) studies in PTSD patients report volume changes in various regions, including white matter and corpus callosum (CC), we aimed to test the relationship between memory deficits and CC volume in PTSD patients. We probed for specific alterations in associative memory in PTSD and measured the volume of subportions within the CC employing bMRI. Our main finding was a reduction in CC white-matter volume in PTSD patients, as compared to controls, t(35) = -2.7, p = .010, that was correlated with lower associative performance (r = .76, p = .003). We propose that CC volume reduction is a substrate for the associative memory deficits found in PTSD.
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Affiliation(s)
- Rotem Saar-Ashkenazy
- Department of Cognitive-Neuroscience, Ben-Gurion University of the Negev, Beer-Sheva, Israel; Department of Psychology, Achva Academic College, Beer-Tuvia Regional Council, Israel
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21
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Flaks MK, Malta SM, Almeida PP, Bueno OFA, Pupo MC, Andreoli SB, Mello MF, Lacerda ALT, Mari JJ, Bressan RA. Attentional and executive functions are differentially affected by post-traumatic stress disorder and trauma. J Psychiatr Res 2014; 48:32-9. [PMID: 24199652 DOI: 10.1016/j.jpsychires.2013.10.009] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2013] [Revised: 10/07/2013] [Accepted: 10/10/2013] [Indexed: 10/26/2022]
Abstract
BACKGROUND Among the neurocognitive impairments observed in patients with Post-traumatic Stress Disorder (PTSD), attentional and executive dysfunctions appear to correlate with negative effects on education, work, daily life activities, and social relations, as well as the re-experiencing, avoidance, and hyperarousal symptoms of PTSD. However, there is no consensus regarding which aspects of attentional and executive functions are impaired in PTSD patients. METHODS Attentional and executive functions were assessed using the digit span (WAIS-III) and spatial span (WMS-III) tests under forward and backward recall conditions, the Stroop Test, and the Wisconsin Card Sorting Test (WCST). Our sample was composed of victims of urban violence who developed PTSD (PTSD+) (n = 81), victims of urban violence who did not develop PTSD (PTSD-) (n = 70), and healthy controls not exposed to trauma (HC) (n = 50). RESULTS The PTSD+ group had poorer performance on the spatial span forward subtest (p = 0.023; eta(2) = 0.038) and poorer execution time (p = 0.023; eta(2) = 0.042) and accuracy (p = 0.019; eta(2) = 0.044) on the Stroop Test compared to HC. CONCLUSIONS These data suggest that there are few differences between the PTSD+ and HC groups, which are restricted to less complex measures of attentional and executive functional processes (short term capacity, selective attention, processing speed, and inhibitory control) and are related to visual stimuli. Therefore, cognitive impairments directly correlated with the manifestation of PTSD.
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Affiliation(s)
- Mariana K Flaks
- LiNC - Laboratório Interdisciplinar de Neurociências Clínicas, Universidade Federal de São Paulo (UNIFESP), Brazil; PROVE - Programa de Atendimento e Pesquisa em Violência, Universidade Federal de São Paulo (UNIFESP), Brazil.
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22
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Roncone R, Giusti L, Mazza M, Bianchini V, Ussorio D, Pollice R, Casacchia M. Persistent fear of aftershocks, impairment of working memory, and acute stress disorder predict post-traumatic stress disorder: 6-month follow-up of help seekers following the L'Aquila earthquake. SPRINGERPLUS 2013; 2:636. [PMID: 24324929 PMCID: PMC3856328 DOI: 10.1186/2193-1801-2-636] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Accepted: 11/09/2013] [Indexed: 11/20/2022]
Abstract
The aim of our 6-month follow-up study was to assess predictors of post-traumatic stress disorder (PTSD) among individuals seeking treatment at the General Hospital Psychiatric Unit within the first month following the L'Aquila earthquake. Clinical, trauma-related and neurocognitive variables were considered. At the 6-month follow-up, 91 (74.5%) out of 122 subjects were re-assessed and administered the Impact of Events Scale-revised (IES-R) for the detection of PTSD according to DSM-IV criteria. Within 4 weeks following the earthquake, patients were assessed with a checklist of traumatic-event-related variables, along with the Stanford Acute Stress Disorder Questionnaire (SASDQ) for the detection of ASD, with a short battery on working (Wechler Memory Scale-R, Digit Forward and Backward) and verbal memory (subtest of Milan Overall Dementia Assessment, MODA). A statistically significant higher proportion of subjects affected by 'partial' ASD showed a PTSD diagnosis (80.6%, N = 29) compared to not diagnosed subjects (40%, N = 22) and a PTSD diagnosis was shown by all the 4 subjects (4.4%) affected by 'full' ASD at the entry in the study. At the 6-month follow-up 56% of the sample could be considered affected by PTSD on the IES-R scale. The results of the logistic regression analysis on our selected predictors indicated that the persistent fear of aftershocks seemed to increase by over 57 times the likelihood of positive estimate of PTSD, followed by impairment of working memory backward (OR 48.2), and having being diagnosed as ASD case in the first 4 week after the earthquake (OR 17.4). This study underlines the importance of identifying PTSD predictors, in order to planning early treatment interventions after natural disasters.
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Affiliation(s)
- Rita Roncone
- Department of Life, Health and Environmental Sciences, Unit of Psychiatry, University of L’Aquila, L’Aquila, 67100 Italy
| | - Laura Giusti
- Department of Life, Health and Environmental Sciences, Unit of Psychiatry, University of L’Aquila, L’Aquila, 67100 Italy
| | - Monica Mazza
- Department of Life, Health and Environmental Sciences, Unit of Psychiatry, University of L’Aquila, L’Aquila, 67100 Italy
| | - Valeria Bianchini
- Department of Life, Health and Environmental Sciences, Unit of Psychiatry, University of L’Aquila, L’Aquila, 67100 Italy
| | - Donatella Ussorio
- Department of Life, Health and Environmental Sciences, Unit of Psychiatry, University of L’Aquila, L’Aquila, 67100 Italy
| | - Rocco Pollice
- Department of Life, Health and Environmental Sciences, Unit of Psychiatry, University of L’Aquila, L’Aquila, 67100 Italy
| | - Massimo Casacchia
- Department of Life, Health and Environmental Sciences, Unit of Psychiatry, University of L’Aquila, L’Aquila, 67100 Italy
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Schuitevoerder S, Rosen JW, Twamley EW, Ayers CR, Sones H, Lohr JB, Goetter EM, Fonzo GA, Holloway KJ, Thorp SR. A meta-analysis of cognitive functioning in older adults with PTSD. J Anxiety Disord 2013; 27:550-8. [PMID: 23422492 DOI: 10.1016/j.janxdis.2013.01.001] [Citation(s) in RCA: 102] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2012] [Revised: 01/03/2013] [Accepted: 01/04/2013] [Indexed: 01/23/2023]
Abstract
A meta-analysis was conducted to summarize and integrate the literature on the cognitive functioning of older adults with posttraumatic stress disorder (PTSD). We hypothesized that those with PTSD would exhibit worse performance in each of the cognitive domains studied when compared to older adults without PTSD. Major databases were queried and eleven articles met criteria for review. As predicted, there was evidence of worse performance across cognitive measures in older adult samples with PTSD relative to older samples without PTSD. The strongest effect across samples was found for lower test scores in the broad domain of memory among older adults with PTSD, and there was evidence that trauma exposure is uniquely associated with worse performance on tests specific to learning. We outline factors thought to contribute to the interactions among PTSD, cognitive deficits, and the aging process. These findings highlight the need for thorough evaluation of cognitive functioning in older adults with PTSD, particularly in the areas of processing speed, learning, memory, and executive functioning.
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Affiliation(s)
- Sage Schuitevoerder
- VA San Diego Healthcare System, 3350 La Jolla Village Drive (116B), San Diego, CA 92161, USA; Trauma Research Institute, 4350 Executive Drive, Suite 255, San Diego, CA 92121, USA
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24
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Peleikis DE, Varga M, Sundet K, Lorentzen S, Agartz I, Andreassen OA. Schizophrenia patients with and without post-traumatic stress disorder (PTSD) have different mood symptom levels but same cognitive functioning. Acta Psychiatr Scand 2013; 127:455-63. [PMID: 23176609 DOI: 10.1111/acps.12041] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/09/2012] [Indexed: 12/01/2022]
Abstract
OBJECTIVE To investigate differences in cognitive function and level of psychopathology in patients with schizophrenia (SZ) with or without psychological traumatization/post-traumatic stress disorder (PTSD). We hypothesized that traumatized patients with or without PTSD would have more severe cognitive impairments because of the neuropathological changes associated with PTSD, and more severe psychopathology compared with non-traumatized SZ patients. METHOD Seventy-five SZ patients with traumatization and 217 SZ patients without traumatization were evaluated regarding the symptoms and cognitive functioning, using standard symptom scales (PANSS; CDSS) and a neuropsychological test battery (IQ, verbal memory, attention, working memory, psychomotor speed, and executive functioning). RESULTS No significant differences were observed between the groups in cognitive test performance. The patients in the traumatized group with PTSD showed significantly more current depression than the non-traumatized group (P = 0.012). CONCLUSION The findings did not support the hypothesis that the presence of comorbid PTSD/traumatization in SZ is associated with increased cognitive impairment. The increase in current depression in SZ with comorbid traumatization suggests that more severe psychopathology is associated with traumatization.
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Affiliation(s)
- D E Peleikis
- Department of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway.
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25
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Zoladz PR, Diamond DM. Current status on behavioral and biological markers of PTSD: a search for clarity in a conflicting literature. Neurosci Biobehav Rev 2013; 37:860-95. [PMID: 23567521 DOI: 10.1016/j.neubiorev.2013.03.024] [Citation(s) in RCA: 188] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2012] [Revised: 03/23/2013] [Accepted: 03/27/2013] [Indexed: 12/24/2022]
Abstract
Extensive research has identified stereotypic behavioral and biological abnormalities in post-traumatic stress disorder (PTSD), such as heightened autonomic activity, an exaggerated startle response, reduced basal cortisol levels and cognitive impairments. We have reviewed primary research in this area, noting that factors involved in the susceptibility and expression of PTSD symptoms are more complex and heterogeneous than is commonly stated, with extensive findings which are inconsistent with the stereotypic behavioral and biological profile of the PTSD patient. A thorough assessment of the literature indicates that interactions among myriad susceptibility factors, including social support, early life stress, sex, age, peri- and post-traumatic dissociation, cognitive appraisal of trauma, neuroendocrine abnormalities and gene polymorphisms, in conjunction with the inconsistent expression of the disorder across studies, confounds attempts to characterize PTSD as a monolithic disorder. Overall, our assessment of the literature addresses the great challenge in developing a behavioral and biomarker-based diagnosis of PTSD.
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Affiliation(s)
- Phillip R Zoladz
- Department of Psychology, Sociology, & Criminal Justice, Ohio Northern University, 525 S. Main St., Ada, OH, 45810, USA
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26
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Gershon A, Sudheimer K, Tirouvanziam R, Williams LM, O'Hara R. The long-term impact of early adversity on late-life psychiatric disorders. Curr Psychiatry Rep 2013; 15:352. [PMID: 23443532 DOI: 10.1007/s11920-013-0352-9] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Early adversity is a strong and enduring predictor of psychiatric disorders including mood disorders, anxiety disorders, substance abuse or dependence, and posttraumatic stress disorder. However, the mechanisms of this effect are not well understood. The purpose of this review is to summarize and integrate the current research knowledge pertaining to the long-term effects of early adversity on psychiatric disorders, particularly in late life. We explore definitional considerations including key dimensions of the experience such as type, severity, and timing of adversity relative to development. We then review the potential biological and environmental mediators and moderators of the relationships between early adversity and psychiatric disorders. We conclude with clinical implications, methodological challenges and suggestions for future research.
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Affiliation(s)
- Anda Gershon
- Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, 401 Quarry Road, Stanford, CA 94305-5717, USA.
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27
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Bush SS, Myers TE. Neuropsychological Services Following Motor Vehicle Collisions. PSYCHOLOGICAL INJURY & LAW 2013. [DOI: 10.1007/s12207-013-9142-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Bomyea J, Risbrough V, Lang AJ. A consideration of select pre-trauma factors as key vulnerabilities in PTSD. Clin Psychol Rev 2012; 32:630-41. [PMID: 22917742 PMCID: PMC3444146 DOI: 10.1016/j.cpr.2012.06.008] [Citation(s) in RCA: 89] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2011] [Revised: 05/07/2012] [Accepted: 06/25/2012] [Indexed: 02/02/2023]
Abstract
Posttraumatic stress disorder (PTSD) is a pathological response to a traumatic event. A number of risk and vulnerability factors predicting PTSD development have been identified in the literature. Many of these variables are specific factors occurring during and after exposure to a traumatic event or are not measured prospectively to assess temporal sequence. Recent research, however, has begun to focus on pre-trauma individual differences that could contribute to risk for developing PTSD. The present review proposes that a number of biological and cognitive vulnerability factors place individuals at risk for PTSD development prior to the actual experience of trauma. Accordingly, this review provides a summary of evidence for a select number of these factors as pre-trauma vulnerabilities to PTSD. Included is a discussion of biological factors, including molecular genetic studies of systems regulating serotonin, catecholamines, and glucocorticoids as well as aspects of the neuroendocrine system. Specific cognitive factors are also considered, including intelligence, neuropsychological functioning and cognitive biases such as negative attributional style and appraisals. For each factor, the present review summarizes evidence to date regarding PTSD vulnerability and highlights directions for future research in this area.
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Affiliation(s)
- Jessica Bomyea
- San Diego State University/University of California, San Diego, Joint Doctoral Program in Clinical Psychology, La Jolla, CA, USA.
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Scott Mackin R, Lesselyong JA, Yaffe K. Pattern of cognitive impairment in older veterans with posttraumatic stress disorder evaluated at a memory disorders clinic. Int J Geriatr Psychiatry 2012; 27:637-42. [PMID: 22213461 PMCID: PMC3685474 DOI: 10.1002/gps.2763] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2010] [Accepted: 06/20/2011] [Indexed: 11/12/2022]
Abstract
BACKGROUND We determined the pattern of clinically significant cognitive impairment (CI) among older veterans with posttraumatic stress disorder (PTSD) evaluated in a memory disorders clinic. METHODS Data were collected from 19 ethnically diverse veterans. Cognitive functioning in six domains (verbal learning, memory, attention, language, executive functioning, and information processing speed) was assessed. RESULTS The majority of veterans (57%) demonstrated CI on a measure of single trial list learning, 44% exhibited CI on short delay memory for lists, and 31% exhibited CI in long delay memory for lists. CI on measures of memory for stories (14%) and executive functioning (6%) were less common, and none of the participants demonstrated CI on measures of attention, language, or information processing speed. CONCLUSIONS CI on measures of single trial list learning and memory for lists are common in older patients with PTSD evaluated in a memory disorders clinic and are likely to contribute to functional deficits.
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Affiliation(s)
- R. Scott Mackin
- Department of Psychiatry; University of California; San Francisco; CA; USA
| | | | - Kristine Yaffe
- Department of Psychiatry; University of California; San Francisco; CA; USA
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30
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Reduced recognition of fear and sadness in post-traumatic stress disorder. Cortex 2011; 47:974-80. [DOI: 10.1016/j.cortex.2010.10.002] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2010] [Revised: 07/08/2010] [Accepted: 10/10/2010] [Indexed: 11/24/2022]
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Abstract
BACKGROUND Because an increasingly large cohort of individuals is approaching their elderly years, there is concern about how the healthcare system will cope with the greater demands placed upon it. One area of concern is the impact of trauma and post traumatic stress disorder (PTSD) in the aged. Although several reviews have highlighted the lack of knowledge and research on the topic, there still remain gaps in the literature. Nevertheless, some recent behavioral, endocrinological and neuroimaging studies may provide new insights into the discussion. The central aims of this paper are to summarize the etiological, epidemiological and clinical aspects of PTSD, trauma, and the elderly, and to integrate this knowledge with (i) what is known about PTSD in adults, and (ii) the behavioral, hormonal and cerebral changes associated with healthy aging. METHODS A comprehensive search was performed with ISI Web of Science and PubMed for articles pertinent to the psychology and biology of PTSD, trauma, and the elderly. RESULTS There exist both significant similarities and differences between adults and elderly with PTSD concerning cognitive and biological profile. Evidence suggests that PTSD in the elderly does not follow a simple clinical trajectory. CONCLUSIONS PTSD in the elderly must be considered within the context of normal aging. Strong claims about an interaction between PTSD and aging are difficult to make due to sample heterogeneity, but it is clear that PTSD in this age group presents unique aspects not seen in younger cohorts. Further research must integrate their studies with the biological, psychological, and social changes already associated with the aging process.
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32
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Tempesta D, Mazza M, Iaria G, De Gennaro L, Ferrara M. A specific deficit in spatial memory acquisition in post-traumatic stress disorder and the role of sleep in its consolidation. Hippocampus 2011; 22:1154-63. [PMID: 21739522 DOI: 10.1002/hipo.20961] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/04/2011] [Indexed: 02/05/2023]
Abstract
Posttraumatic stress disorder (PTSD) is characterized by the presence of anatomo-functional hippocampal alterations. To date, the ability to orient within the environment, which relies on hippocampal integrity, has never been investigated in PTSD. We hypothesized that the ability to form a cognitive map of the environment would be impaired in PTSD. Moreover, spatial memory consolidation benefits from postlearning sleep. Because PTSD individuals often complain about sleep disturbances, we hypothesized that any sleep effect on memory performance would be hampered in these subjects. Twenty-two subjects, all survivors of the L'Aquila 2009 earthquake, were divided into a PTSD and a control group, based on clinical evaluation. After an acquisition phase, they were tested twice ("test" and "retest") on a virtual navigation task. In addition, participants were administered the Digit Span and Task Switching. Subjective sleep quality and sleep disturbances were also assessed. The two testing sessions were on consecutive mornings, interspersed with a night of sleep. During the acquisition phase, the PTSD group took more than twice as long to form a cognitive map of the environment compared to the control group. However, once this phase was successfully completed, the two groups did not differ at test, but they tendentially differed at postsleep retest. Additional analyses comparing performances between groups on test-retest difference scores confirm that sleep-dependent consolidation may be differentially affected in the two groups. Our findings are strictly confined to the navigation performance, excluding a generalized cognitive deficit. PTSD also reported more subjective sleep disturbances and shorter sleep time than controls, which were correlated to worse performance at retest. The specific deficit in the formation of a cognitive map reported in PTSD may be related to hippocampal dysfunctions as well as to the sleep disturbances experienced by these patients. The possible deficiency of sleep-dependent spatial performance improvement should however be confirmed by further studies comprising a wake control group.
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Affiliation(s)
- D Tempesta
- Department of Health Sciences, University of L'Aquila, Italy
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33
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van der Heijden KB, Suurland J, Swaab H, de Sonneville LMJ. Relationship between the number of life events and memory capacity in children. Child Neuropsychol 2011; 17:580-98. [PMID: 21452088 DOI: 10.1080/09297049.2011.554391] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Stressful life events can result into declined memory performance at later age. One hypothesis suggests that stress affects the hippocampus, a brain area important for memory functioning. This study explored a potential relationship between the number of negative stressful life events and hippocampus-dependent declarative but not hippocampus-independent procedural memory performance in a community sample of 255 children, aged 6-12 years. The findings revealed that negative stressful life events were negatively related to verbal declarative memory, but not to nonverbal declarative and procedural memory. The memory impairments could not be accounted for by attention and sleep disturbances, and parenting characteristics as perceived by the child did not influence the vulnerability for the stress-related memory impairments. These findings provide further insight into the deleterious effects of negative stressful life events on learning in school-aged children.
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Affiliation(s)
- Kristiaan B van der Heijden
- Department of Clinical Child and Adolescent Studies, Leiden Institute for Brain and Cognition, Leiden University, Leiden, The Netherlands.
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34
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Patients with posttraumatic stress disorder show decreased cognitive control: evidence from dichotic listening. J Int Neuropsychol Soc 2011; 17:344-53. [PMID: 21338561 DOI: 10.1017/s1355617710001736] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The influence of posttraumatic stress disorder (PTSD) on cognitive control and auditory attention modulation was examined with the use of a dichotic-listening (DL) task. The participants were 45 war-exposed refugees. The PTSD group comprised 22 participants meeting the DSM-IV criteria for PTSD, and the Control group comprised 23 war-exposed participants without PTSD. Both groups were tested with a consonant-vowel syllables DL task under three different attentional instructions. The two groups did not differ in the non-forced and forced-right conditions and showed, as expected, right-ear advantages. The Control group showed, as expected, a left-ear advantage in the forced-left (FL) condition. However, the PTSD group continued to show a right-ear advantage--and only minor modulation of the performance during the FL condition. This finding suggests that PTSD is associated with a reduced capacity for top-down attentional control of a bottom-up or stimulus-driven effect. The result shows that participants with PTSD have impaired cognitive control functions when tested on information processing of neutral stimuli.
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35
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Andero R, Daviu N, Escorihuela RM, Nadal R, Armario A. 7,8-dihydroxyflavone, a TrkB receptor agonist, blocks long-term spatial memory impairment caused by immobilization stress in rats. Hippocampus 2010; 22:399-408. [DOI: 10.1002/hipo.20906] [Citation(s) in RCA: 79] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/16/2010] [Indexed: 01/24/2023]
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36
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Qureshi SU, Kimbrell T, Pyne JM, Magruder KM, Hudson TJ, Petersen NJ, Yu HJ, Schulz PE, Kunik ME. Greater prevalence and incidence of dementia in older veterans with posttraumatic stress disorder. J Am Geriatr Soc 2010; 58:1627-33. [PMID: 20863321 DOI: 10.1111/j.1532-5415.2010.02977.x] [Citation(s) in RCA: 131] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
UNLABELLED To explore the association between posttraumatic stress disorder (PTSD) and dementia in older veterans. DESIGN Administrative database study of individuals seen within one regional division of the Veterans Affairs healthcare network. SETTING Veterans Integrated Service Network 16. PARTICIPANTS Veterans aged 65 and older who had a diagnosis of PTSD or who were recipients of a Purple Heart (PH) and a comparison group of the same age with no PTSD diagnosis or PH were divided into four groups: those with PTSD and no PH (PTSD+/PH-, n=3,660), those with PH and no PTSD (PTSD-/PH+, n=1,503), those with PTSD and a PH (PTSD+/PH+, n=153), and those without PTSD or a PH (PTSD-/PH-, n=5,165). MEASUREMENTS Incidence and prevalence of dementia after controlling for confounding factors in multivariate logistic regression. RESULTS The PTSD+/PH- group had a significantly higher incidence and prevalence of dementia than the groups without PTSD with or without a PH. The prevalence and incidence of a dementia diagnosis remained two times as high in the PTSD+/PH- group as in the PTSD-/PH+ or PTSD-/PH- group after adjusting for the confounding factors. There were no statistically significant differences between the other groups. CONCLUSION The incidence and prevalence of dementia is greater in veterans with PTSD. It is unclear whether this is due to a common risk factor underlying PTSD and dementia or to PTSD being a risk factor for dementia. Regardless, this study suggests that veterans with PTSD should be screened more closely for dementia. Because PTSD is so common in veterans, this association has important implications for veteran care.
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Affiliation(s)
- Salah U Qureshi
- Houston Center for Quality of Care and Utilization Studies, Health Services Research and Development Service, Houston, Texas, USA
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37
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Su CY, Tsai KY, Chou FHC, Ho WW, Liu R, Lin WK. A three-year follow-up study of the psychosocial predictors of delayed and unresolved post-traumatic stress disorder in Taiwan Chi-Chi earthquake survivors. Psychiatry Clin Neurosci 2010; 64:239-48. [PMID: 20602724 DOI: 10.1111/j.1440-1819.2010.02087.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
AIMS To predict the longitudinal course of post-traumatic stress disorder (PTSD) in survivors three years following a catastrophic earthquake using multivariate data presented six months after the earthquake. METHODS Trained assistants and psychiatrists used the Disaster-related Psychological Screening Test (DRPST) to interview earthquake survivors 16 years and older and to assess current and incidental psychopathology. A total of 1756 respondents were surveyed over the three-year follow-up period. RESULTS A total of 38 (9.1%) of the original 418 PTSD subjects and 40 of the original 1338 (3.0%) non-PTSD subjects were identified as having PTSD at the 3-year post-earthquake follow up. Younger age, significant financial loss, and memory/attention impairment were predictive factors of unresolved PTSD and delayed PTSD. CONCLUSIONS The longitudinal course of PTSD three years after the earthquake could be predicted as early as six months after the earthquake on the basis of demographic data, PTSD-related factors, and putative factors for PTSD.
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Affiliation(s)
- Chao-Yueh Su
- Department of Nursing, I-Shou University, Kaohsiung County, Taiwan
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38
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Shrira A, Palgi Y, Ben-Ezra M, Shmotkin D. Do Holocaust survivors show increased vulnerability or resilience to post-Holocaust cumulative adversity? J Trauma Stress 2010; 23:367-75. [PMID: 20564370 DOI: 10.1002/jts.20524] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Prior trauma can hinder coping with additional adversity or inoculate against the effect of recurrent adversity. The present study further addressed this issue by examining whether a subsample of Holocaust survivors and comparison groups, drawn from the Israeli component of the Survey of Health, Ageing, and Retirement in Europe, were differentially affected by post-Holocaust cumulative adversity. Post-Holocaust cumulative adversity had a stronger effect on the lifetime depression of Holocaust survivors than on that of comparisons. However, comparisons were more negatively affected by post-Holocaust cumulative adversity when examining markers of physical and cognitive functioning. Our findings suggest that previous trauma can both sensitize and immunize, as Holocaust survivors show general resilience intertwined with specific vulnerability when confronted with additional cumulative adversity.
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Affiliation(s)
- Amit Shrira
- Department of Psychology, Tel Aviv University
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39
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Duke LA, Allen DN, Ross SA, Strauss GP, Schwartz J. Neurocognitive function in schizophrenia with comorbid posttraumatic stress disorder. J Clin Exp Neuropsychol 2010; 32:737-51. [PMID: 20198528 DOI: 10.1080/13803390903512660] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Individuals with schizophrenia are at a greater risk for experiencing trauma and developing posttraumatic stress disorder (PTSD) than the general population. Despite an increased incidence of neurocognitive dysfunction in both schizophrenia and PTSD, there are few studies that have examined the potential compounding effects of these diagnoses when they co-occur. The current study examined this issue by administering comprehensive diagnostic, symptom, and neurocognitive evaluations to four groups including normal controls (C), as well as individuals with PTSD (PTSD), schizophrenia (SZ), or both schizophrenia and PTSD (SZP). Results indicated that when compared to the SZ group, the SZP group exhibited higher rates of positive symptoms, general psychopathology, and PTSD symptoms, as well as lower rates of negative symptoms. Regarding neurocognitive test performance, both schizophrenia groups performed significantly worse than the C and PTSD groups across all neurocognitive domains. However, differences were not significant between the SZP and SZ groups, although a differential pattern of performance between the groups was indicated. Results of this study do not support the idea that the presence of comorbid PTSD in SZ results in a substantial increase in cognitive impairment.
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Affiliation(s)
- Lisa A Duke
- Department of Psychology, University of Nevada Las Vegas, Las Vegas, NV 89154-5030, USA
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40
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The influence of pre-deployment neurocognitive functioning on post-deployment PTSD symptom outcomes among Iraq-deployed Army soldiers. J Int Neuropsychol Soc 2009; 15:840-52. [PMID: 19891817 DOI: 10.1017/s1355617709990488] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
This study evaluated associations between pre-deployment neurocognitive performance and post-deployment posttraumatic stress disorder (PTSD) symptoms in a sample of deployed active duty Army soldiers. As part of a larger longitudinal study, each participant completed baseline measures of memory, executive attention, and response inhibition, and baseline and post-deployment self-report measures of PTSD symptom severity. Data were subjected to multiple regression analyses that examined associations between baseline neurocognitive performances and longitudinal PTSD symptom outcome. Results revealed that pre-trauma immediate recall of visual information was associated with post-deployment PTSD symptom severity, even after controlling for pre-deployment PTSD symptom levels, combat intensity, age, gender, and test-retest interval. There was also an interaction between pre-deployment PTSD symptom severity and pre-deployment immediate visual recall and verbal learning, indicating that neurocognitive performances were more strongly (and negatively) associated with residualized post-deployment PTSD symptoms at higher levels of pre-deployment PTSD symptoms. These findings highlight the potential role of pre-trauma neurocognitive functioning in moderating the effects of trauma exposure on PTSD symptoms
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41
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Abstract
Numerous studies have demonstrated explicit and working memory deficits related to posttraumatic stress disorder (PTSD), but few have addressed longitudinal changes in memory functioning. There is some evidence to suggest an interactive effect of PTSD and aging on verbal memory decline in Holocaust survivors (Yehuda et al., 2006). However, the longitudinal trajectory of neuropsychological functioning has not been investigated in Vietnam veterans, a younger but substantial population of aging trauma survivors. We administered tests of visual and verbal memory, and working memory to derive different dependent measures in veterans between the ages of 41 and 63, the majority of whom served in the Vietnam War. Twenty-five veterans with PTSD and 22 veterans without PTSD were assessed over two time points (mean age at follow-up = 54.0; mean inter-test interval = 34 months). The PTSD+ group, consisting of veterans with chronic, primarily combat-related PTSD, did not show a significant change in PTSD symptoms over time. Compared to veterans without PTSD, veterans with PTSD showed a greater decline in delayed facial recognition only, and this decline was extremely subtle.
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42
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Karl A, Werner A. The use of proton magnetic resonance spectroscopy in PTSD research--meta-analyses of findings and methodological review. Neurosci Biobehav Rev 2009; 34:7-22. [PMID: 19559046 DOI: 10.1016/j.neubiorev.2009.06.008] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2009] [Revised: 06/11/2009] [Accepted: 06/16/2009] [Indexed: 10/20/2022]
Abstract
Different neuroimaging techniques provided evidence for structural and functional brain alterations in posttraumatic stress disorder (PTSD). Due to technical improvements, especially concerning localization techniques and more reliable analysis methods, one technique, proton magnetic resonance spectroscopy ((1)H-MRS), has increasingly become of interest because it allows further insight into metabolic mechanisms that may contribute to these alterations. The aim of this article is, therefore, to review recent studies utilizing (1)H-MRS of the hippocampus and other brain structures in PTSD. Using meta-analytic methods, we attempted to answer the question if PTSD, as compared to different types of control samples, is accompanied by altered neurometabolite ratios and concentrations in the tissue of different brain regions. A second intent was to review methodological aspects to advise on a minimal standard for reliable results with respect to the application of (1)H-MRS in PTSD. Finally, we discussed the implications of the findings with respect to current PTSD models and future research.
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Affiliation(s)
- Anke Karl
- School of Psychology, University of Southampton, Building 44, Southampton, UK.
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43
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Les troubles cognitifs dans le Post-Traumatic Stress Disorder (PTSD) : une revue de la littérature. ANNEE PSYCHOLOGIQUE 2009. [DOI: 10.4074/s0003503307003065] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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44
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Geuze E, Vermetten E, de Kloet CS, Hijman R, Westenberg HGM. Neuropsychological performance is related to current social and occupational functioning in veterans with posttraumatic stress disorder. Depress Anxiety 2009; 26:7-15. [PMID: 18800372 DOI: 10.1002/da.20476] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND Several studies have reported deficits in both immediate and delayed recall of verbal memory in patients with posttraumatic stress disorder (PTSD). However, most of these studies had several methodological disadvantages. None of these studies assessed parameters related to social or occupational functioning. METHODS Fifty Dutch veterans of UN peacekeeping missions (25 with PTSD and 25 without PTSD) were assessed with a comprehensive neuropsychological test battery consisting of four subtests of the Wechsler Adult Intelligence Scale-III, California Verbal-Learning Test, and the Rey Auditory Verbal-Learning Test. Veterans with PTSD were free of medication and substance abuse. RESULTS Veterans with PTSD had similar total intelligence quotient scores compared to controls, but displayed deficits of figural and logical memory. Veterans with PTSD also performed significantly lower on measures of learning and immediate and delayed verbal memory. Memory performance accurately predicted current social and occupational functioning. CONCLUSIONS Deficits of memory performance were displayed in a sample of medication- and substance abuse-free veterans with PTSD. Deficits in memory performance were not related to intelligence quotient, length of trauma exposure, or time since trauma exposure. This study showed that cognitive performance accurately predicted current social and occupational functioning in veterans with PTSD.
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Affiliation(s)
- Elbert Geuze
- Research Centre-Military Mental Health, Ministry of Defense, Utrecht, The Netherlands.
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45
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Amir N, Badour CL, Freese B. The effect of retrieval on recall of information in individuals with posttraumatic stress disorder. J Anxiety Disord 2009; 23:535-40. [PMID: 19070459 PMCID: PMC3808957 DOI: 10.1016/j.janxdis.2008.10.012] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2008] [Revised: 10/31/2008] [Accepted: 10/31/2008] [Indexed: 12/01/2022]
Abstract
Cognitive theories of posttraumatic stress disorder (PTSD) suggest that associative memory processes may play a crucial role in the development and maintenance of the disorder. In the current study we examined the effect of associative pair rehearsal on recall ability for threatening and non-threatening information using the retrieval-practice paradigm in individuals with PTSD, traumatized controls (TC), and non-traumatized controls (NAC). Across word type, NACs demonstrated a typical retrieval-induced forgetting effect. However, individuals with PTSD benefited less from rehearsal, and failed to inhibit recall of unpracticed words in practiced categories. Participants in the TC group displayed a retrieval-induced forgetting effect similar to those individuals in the PTSD group. These findings are consistent with research indicating that individuals with PTSD may derive less benefit from rehearsal and display general inhibitory difficulties when compared to non-traumatized controls.
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Affiliation(s)
- Nader Amir
- SDSU/UCSD Joint Doctoral Program in Clinical Psychology, San Diego State University, CA 92120-4913, USA.
| | - Christal L. Badour
- SDSU/UCSD Joint Doctoral Program in Clinical Psychology, San Diego State University, CA 92120-4913, United States
| | - Bettina Freese
- Joint Doctoral Program in Clinical Psychology, University of Granada, Spain
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46
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Johnsen GE, Asbjørnsen AE. Verbal learning and memory impairments in posttraumatic stress disorder: the role of encoding strategies. Psychiatry Res 2009; 165:68-77. [PMID: 19058857 DOI: 10.1016/j.psychres.2008.01.001] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2006] [Revised: 07/05/2007] [Accepted: 01/01/2008] [Indexed: 10/21/2022]
Abstract
The present study examined mechanisms underlying verbal memory impairments in patients with posttraumatic stress disorder (PTSD). Earlier studies have reported that the verbal learning and memory alterations in PTSD are related to impaired encoding, but the use of encoding and organizational strategies in patients with PTSD has not been fully explored. This study examined organizational strategies in 21 refugees/immigrants exposed to war and political violence who fulfilled DSM-IV criteria for chronic PTSD compared with a control sample of 21 refugees/immigrants with similar exposure, but without PTSD. The California Verbal Learning Test was administered to examine differences in organizational strategies and memory. The semantic clustering score was slightly reduced in both groups, but the serial cluster score was significantly impaired in the PTSD group and they also reported more items from the recency region of the list. In addition, intrusive errors were significantly increased in the PTSD group. The data support an assumption of changed memory strategies in patients with PTSD associated with a specific impairment in executive control. However, memory impairment and the use of ineffective learning strategies may not be related to PTSD symptomatology only, but also to self-reported symptoms of depression and general distress.
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Affiliation(s)
- Grethe E Johnsen
- Department of Biological and Medical Psychology, University of Bergen, Bergen, Norway.
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47
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Johnsen GE, Asbjørnsen AE. Consistent impaired verbal memory in PTSD: a meta-analysis. J Affect Disord 2008; 111:74-82. [PMID: 18377999 DOI: 10.1016/j.jad.2008.02.007] [Citation(s) in RCA: 141] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2007] [Revised: 02/08/2008] [Accepted: 02/08/2008] [Indexed: 11/28/2022]
Abstract
BACKGROUND Qualitative review papers have indicated that verbal memory impairment is found to be the most consistent cognitive impairment related to PTSD. These review papers have used qualitative methods to describe the effects, and consequently they have not been able to estimate the strength of the memory-PTSD association. METHODS This meta-analysis of 28 studies examined the empirical evidence for this relationship, and factors affecting the results. RESULTS Overall, the results showed medium effect sizes in patients with PTSD compared to controls on verbal memory across studies. Marked impairment was found in the patient groups compared to healthy controls, while modest impairment was found compared to exposed non-PTSD controls. Meta-analyses found strongest effects in war veterans compared to sexual and physical assault related PTSD. Rather unexpectedly no effect was found for the sexually abused PTSD groups compared to exposed controls. The analyses further showed that the effect was dependent on the test procedures used. The studies using WMS and AVLT had stronger effects than studies using CVLT. LIMITATIONS Insufficient data were available to analyze a more complete attention-memory profile. CONCLUSIONS This meta-analysis confirms that verbal memory impairment is present in adults with PTSD, and they are consistent across studies. This impairment should be the focus of work in clinical settings.
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Affiliation(s)
- Grethe E Johnsen
- Department of Biological and Medical Psychology, University of Bergen, Bergen, Norway.
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48
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Abstract
Post-traumatic stress disorder (PTSD) is often associated with verbal memory deficits, which could influence treatment outcome. We assessed neuropsychological functioning in individuals with PTSD and their response to cognitive-behavioural therapy (CBT). Treatment non-responders had significantly poorer performance on measures of verbal memory compared with responders and demonstrated narrative encoding deficits. Differences were not explained by IQ, performance on tasks of attention, initial PTSD severity, depression, time since trauma, or alcohol/substance misuse. Verbal memory deficits seem to diminish the effectiveness of CBT and should be considered in its implementation.
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Affiliation(s)
- Jennifer Wild
- King's College London, Department of Psychology, London SE5 8AF, UK.
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49
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Johnsen GE, Kanagaratnam P, Asbjørnsen AE. Memory impairments in posttraumatic stress disorder are related to depression. J Anxiety Disord 2008; 22:464-74. [PMID: 17532601 DOI: 10.1016/j.janxdis.2007.04.007] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2006] [Revised: 04/13/2007] [Accepted: 04/20/2007] [Indexed: 10/23/2022]
Abstract
The present study focuses on verbal learning and memory alterations in refugees with posttraumatic stress disorder, and whether the alterations are related to attention, acquisition, storage, or retrieval. Twenty-one refugees exposed to war and political violence with chronic PTSD, were compared to an exposed control sample of 21 refugees without PTSD. No differences were found in attention span, but tests of verbal memory showed less efficient learning in the PTSD sample. Group differences in delayed recall could be explained by learning efficiency. No differences were seen in recognition memory. These results indicate that memory alterations in PTSD are related to impaired acquisition and less effective encoding of the memory material and not to impaired attention span and/or impaired retrieval. Controlling for specific PTSD symptom clusters and self-reported depression showed that the intrusion subscale and depressive reactions are the most important symptoms in understanding the memory alterations in PTSD.
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Affiliation(s)
- Grethe E Johnsen
- Deaprtment of Biological and Medical Psychology, University of Bergen, Bergen, Norway.
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50
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Robinson SJ, Sünram-Lea SI, Leach J, Owen-Lynch PJ. The effects of exposure to an acute naturalistic stressor on working memory, state anxiety and salivary cortisol concentrations. Stress 2008; 11:115-24. [PMID: 18311600 DOI: 10.1080/10253890701559970] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Abstract
Exposure to an acute naturalistic stressor induces both psychological and physiological changes in humans. The two studies reported here explored the impact of exposure to an acute naturalistic stressor on state anxiety, working memory and HPA axis activation (salivary cortisol). In both experiments, ten healthy male participants were exposed to an acute naturalistic stressor, helicopter underwater evacuation training (HUET), and their physiological and behavioural responses before (first study) and after (second study) the stressor were compared to ten non-stressed controls. The results of both experiments showed that working memory performance was preserved during anticipation of an acute stressor, but impairments were observed immediately after stress exposure. Participants reported significantly higher state anxiety levels during anticipation and following stress exposure, whereas significant elevations in cortisol levels were only observed 25 min post exposure to stress, but not before or immediately after stress exposure. The results of both experiments demonstrated a dissociation between behavioural and biochemical measures and provided evidence for a dissociation of the effects of stress on cognitive and physiological measures depending on the time of testing, with cognitive impairments most evident following stress exposure.
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Affiliation(s)
- S J Robinson
- Department of Psychology, University of Central Lancashire, Preston, Lancashire, United Kingdom.
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