1
|
Knapp CP, Papadopoulos E, Loweth JA, Raghupathi R, Floresco SB, Waterhouse BD, Navarra RL. Perturbations in risk/reward decision making and frontal cortical catecholamine regulation induced by mild traumatic brain injury. Behav Brain Res 2024; 467:115002. [PMID: 38636779 DOI: 10.1016/j.bbr.2024.115002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 04/03/2024] [Accepted: 04/14/2024] [Indexed: 04/20/2024]
Abstract
Mild traumatic brain injury (mTBI) disrupts cognitive processes that influence risk taking behavior. Little is known regarding the effects of repetitive mild injury (rmTBI) or whether these outcomes are sex specific. Risk/reward decision making is mediated by the prefrontal cortex (PFC), which is densely innervated by catecholaminergic fibers. Aberrant PFC catecholamine activity has been documented following TBI and may underlie TBI-induced risky behavior. The present study characterized the effects of rmTBI on risk/reward decision making behavior and catecholamine transmitter regulatory proteins within the PFC. Rats were exposed to sham, single (smTBI), or three closed-head controlled cortical impact (CH-CCI) injuries and assessed for injury-induced effects on risk/reward decision making using a probabilistic discounting task (PDT). In the first week post-final surgery, mTBI increased risky choice preference. By the fourth week, males exhibited increased latencies to make risky choices following rmTBI, demonstrating a delayed effect on processing speed. When levels of tyrosine hydroxylase (TH) and the norepinephrine reuptake transporter (NET) were measured within subregions of the PFC, females exhibited dramatic increases of TH levels within the orbitofrontal cortex (OFC) following smTBI. However, both males and females demonstrated reduced levels of OFC NET following rmTBI. These results indicate the OFC is susceptible to catecholamine instability after rmTBI and suggests that not all areas of the PFC contribute equally to TBI-induced imbalances. Overall, the CH-CCI model of rmTBI has revealed time-dependent and sex-specific changes in risk/reward decision making and catecholamine regulation following repetitive mild head injuries.
Collapse
Affiliation(s)
- Christopher P Knapp
- Department of Cell Biology and Neuroscience, Rowan-Virtua School of Translational Biomedical Engineering and Sciences, Stratford, NJ, USA.
| | - Eleni Papadopoulos
- Department of Cell Biology and Neuroscience, Rowan-Virtua School of Translational Biomedical Engineering and Sciences, Stratford, NJ, USA
| | - Jessica A Loweth
- Department of Cell Biology and Neuroscience, Rowan-Virtua School of Translational Biomedical Engineering and Sciences, Stratford, NJ, USA
| | - Ramesh Raghupathi
- Department of Neurobiology and Anatomy, Drexel University College of Medicine, Philadelphia, PA, USA
| | - Stan B Floresco
- Department of Psychology and Djavad Mowafaghian Centre for Brain Health, University of British Columbia, Vancouver, BC, Canada
| | - Barry D Waterhouse
- Department of Cell Biology and Neuroscience, Rowan-Virtua School of Translational Biomedical Engineering and Sciences, Stratford, NJ, USA
| | - Rachel L Navarra
- Department of Cell Biology and Neuroscience, Rowan-Virtua School of Translational Biomedical Engineering and Sciences, Stratford, NJ, USA.
| |
Collapse
|
2
|
Fusi G, Crepaldi M, Palena N, Segatta C, Bariselli M, Cerrano C, Rusconi ML, Vascello MGF. Decision-making abilities under risk and ambiguity in adults with traumatic brain injury: what do we know so far? A systematic review and meta-analysis. J Clin Exp Neuropsychol 2023; 45:389-410. [PMID: 37585702 DOI: 10.1080/13803395.2023.2245107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 07/21/2023] [Indexed: 08/18/2023]
Abstract
Traumatic brain injury (TBI) is a major health and socio-economic problem since it is one of the major sources of death and disability worldwide. TBI patients usually show high heterogeneity in their clinical features, including both cognitive and emotional/behavioral alterations. As it specifically concerns cognitive functioning, these patients usually show decision-making (DM) deficits. DM is commonly considered a complex and multistep process that is strictly linked to both hot and cold executive functioning and is pivotal for daily life functioning and patients' autonomy. However, the results are not always in agreement, with some studies that report huge alterations in the DM processes, while others do not. The present systematic review and meta-analysis aims to integrate past literature on this topic, providing a clear and handy picture both for researchers and clinicians. Thirteen studies addressing domain-general DM abilities were included from an initial N = 968 (from three databases). Results showed low heterogeneity between the studies (I2 = 7.90, Q (12) = 13.03, p = .37) supporting the fact that, overall, TBI patients showed lower performance in DM tasks as compared to healthy controls (k = 899, g = .48, 95% CI [0.33; 0.62]) both in tasks under ambiguity and under risk. The evidence that emerged from this meta-analysis denotes a clear deficit of DM abilities in TBI patients. However, DM tasks seemed to have good sensitivity but low specificity. A detailed description of patients' performances and the role of both bottom-up, hot executive functions and top-down control functions have been further discussed. Finally, future directions and practical implications for both researchers and clinicians have been put forward.
Collapse
Affiliation(s)
- Giulia Fusi
- Department of Human and Social Sciences, University of Bergamo, Bergamo, Italy
| | - Maura Crepaldi
- Department of Human and Social Sciences, University of Bergamo, Bergamo, Italy
| | - Nicola Palena
- Department of Human and Social Sciences, University of Bergamo, Bergamo, Italy
| | - Cecilia Segatta
- Department of Human and Social Sciences, University of Bergamo, Bergamo, Italy
| | - Martina Bariselli
- Department of Human and Social Sciences, University of Bergamo, Bergamo, Italy
| | - Costanza Cerrano
- Department of Human and Social Sciences, University of Bergamo, Bergamo, Italy
| | - Maria Luisa Rusconi
- Department of Human and Social Sciences, University of Bergamo, Bergamo, Italy
| | | |
Collapse
|
3
|
Pinar C, Trivino-Paredes J, Perreault ST, Christie BR. Hippocampal cognitive impairment in juvenile rats after repeated mild traumatic brain injury. Behav Brain Res 2020; 387:112585. [DOI: 10.1016/j.bbr.2020.112585] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 03/06/2020] [Accepted: 03/06/2020] [Indexed: 11/25/2022]
|
4
|
Traumatic brain injury and methamphetamine: A double-hit neurological insult. J Neurol Sci 2020; 411:116711. [DOI: 10.1016/j.jns.2020.116711] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Revised: 11/27/2019] [Accepted: 01/29/2020] [Indexed: 11/17/2022]
|
5
|
Liu F, Shao Y, Li X, Liu L, Zhao R, Xie B, Qiao Y. Volumetric Abnormalities in Violent Schizophrenia Patients on the General Psychiatric Ward. Front Psychiatry 2020; 11:788. [PMID: 33117201 PMCID: PMC7493665 DOI: 10.3389/fpsyt.2020.00788] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 07/23/2020] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND In recent years, neuroimaging has been used increasingly to explore the biological underpinnings of violence carried out by schizophrenia patients (SPs). Studies have focused mostly on patients with a history of carrying out severe physical assaults, or comorbid with substance abuse/personality disorder (SA/PD). As a result, participants were unrepresentative and the interpretation of brain-structure changes was confusing. Here, we concentrated on SPs on a general psychiatric ward with a history of relatively lower violence, and individuals comorbid with SA or PD were excluded. We expected to identify the characteristics of brain morphometry in this population, and to explore whether the morphometric changes were universal. METHODS Forty-eight violent schizophrenia patients (VSPs), twenty-seven non-VSPs (nVSPs) and 28 nonviolent healthy controls (HCs) were investigated. Voxel-based morphometry was used to evaluate the gray matter volume (GMV) of all study participants. Whole-brain analyses were used to reveal group effects and differences between any two groups. Correlation analyses were undertaken between significant brain regions and behavioral measurements in the VSP group. RESULTS Patients showed a significantly smaller GMV in widespread frontal, temporal, and limbic regions compared with HCs. No region was found in which the two patient groups had significantly larger volumes compared with that in HCs. A significant decrease in the GMV of the right fusiform gyrus was found in the VSP group compared with that in the nVSP group (p = 0.004), where the GMV of this region had a negative correlation with the Physical Aggression [subscale of the Modified Overt Aggression Scale (MOAS)] or Hostility score. The VSP group showed a trend of GMV decrease in the left middle temporal cortex compared with that in the nVSP group (p = 0.077). Negative correlation was also found between the GMV of left inferior temporal gyrus/left Superior frontal gyrus, medial and the Hostility score. CONCLUSIONS Our results provide initial evidence demonstrating the generalizability of GMV abnormalities in SPs engaged in varying levels of violence, even when SA or PD have not been implicated. GMV reduction was correlated with only the Physical Aggression subscale score of the MOAS, suggesting that this change in brain morphology may be dependent upon different types of violent actions.
Collapse
Affiliation(s)
- FengJu Liu
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yang Shao
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xin Li
- Shanghai Pudong New Area Mental Health Center, School of Medicine, Tongji University, Shanghai, China
| | - Li Liu
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Rong Zhao
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Bin Xie
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yi Qiao
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| |
Collapse
|
6
|
Executive (dys)function after traumatic brain injury: special considerations for behavioral pharmacology. Behav Pharmacol 2019; 29:617-637. [PMID: 30215621 PMCID: PMC6155367 DOI: 10.1097/fbp.0000000000000430] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Executive function is an umbrella term that includes cognitive processes such as decision-making, impulse control, attention, behavioral flexibility, and working memory. Each of these processes depends largely upon monoaminergic (dopaminergic, serotonergic, and noradrenergic) neurotransmission in the frontal cortex, striatum, and hippocampus, among other brain areas. Traumatic brain injury (TBI) induces disruptions in monoaminergic signaling along several steps in the neurotransmission process - synthesis, distribution, and breakdown - and in turn, produces long-lasting deficits in several executive function domains. Understanding how TBI alters monoamingeric neurotransmission and executive function will advance basic knowledge of the underlying principles that govern executive function and potentially further treatment of cognitive deficits following such injury. In this review, we examine the influence of TBI on the following measures of executive function - impulsivity, behavioral flexibility, and working memory. We also describe monoaminergic-systems changes following TBI. Given that TBI patients experience alterations in monoaminergic signaling following injury, they may represent a unique population with regard to pharmacotherapy. We conclude this review by discussing some considerations for pharmacotherapy in the field of TBI.
Collapse
|
7
|
Clasby B, Bennett M, Hughes N, Hodges E, Meadham H, Hinder D, Williams H, Mewse A. The consequences of traumatic brain injury from the classroom to the courtroom: understanding pathways through structural equation modelling. Disabil Rehabil 2019; 42:2412-2421. [PMID: 31282232 DOI: 10.1080/09638288.2019.1635214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Purpose: Paediatric traumatic brain injury (TBI) can have resultant ongoing significant impairments which can impact life outcomes. The primary aim of this research was to explore whether TBI contributes to the relationship between poor educational outcomes and offending trajectories.Materials and methods: Through analysis of a dataset consisting of self-reported health, educational, and offending histories of 70 incarcerated young males, structural equation modelling was used to explore the mediation of educational outcomes and patterns in offending behaviour by chronic symptoms following TBI.Results: Symptoms related to TBI significantly mediated the relationship between decreased educational attainment and more frequent convictions. It did not mediate any relationships involving age at first conviction.Conclusions: Traumatic brain injury appears to have more influence over frequency of offending patterns than age at first conviction. However, TBI remains a pervasive factor in both higher rates of offending and poorer educational attainment. In order to tackle this effect on adverse social outcomes, greater attention to the impact of TBI is required in education and criminal justice systems.IMPLICATIONS FOR REHABILITATIONHighlights traumatic brain injury as a contributory factor in some education to offending pathways, suggesting that greater focus on rehabilitation within the education and criminal justice systems is required.Reinforces that greater understanding of educational pathways post-injury is needed to better facilitate rehabilitation within the school system.
Collapse
Affiliation(s)
- Betony Clasby
- Centre for Adolescent Health, Murdoch Children's Research Institute, Melbourne, Australia.,Department of Sociological Studies, University of Sheffield, Sheffield, UK
| | - Matthew Bennett
- Department of Social Policy, Sociology and Criminology, University of Birmingham, Birmingham, UK
| | - Nathan Hughes
- Centre for Adolescent Health, Murdoch Children's Research Institute, Melbourne, Australia.,Department of Sociological Studies, University of Sheffield, Sheffield, UK
| | - Emma Hodges
- Department of Psychology, University of Exeter, Exeter, UK
| | - Hannah Meadham
- Department of Psychology, University of Exeter, Exeter, UK.,Carmarthen Community Team for Learning Disabilities, Hywel Dda University Health Board, Carmarthen, UK
| | - Darren Hinder
- Department of Psychology, University of Exeter, Exeter, UK
| | - Huw Williams
- Department of Psychology, University of Exeter, Exeter, UK
| | - Avril Mewse
- Department of Psychology, University of Exeter, Exeter, UK
| |
Collapse
|
8
|
Leclerc MP, Regenbogen C, Hamilton RH, Habel U. Some neuroanatomical insights to impulsive aggression in schizophrenia. Schizophr Res 2018; 201:27-34. [PMID: 29908715 DOI: 10.1016/j.schres.2018.06.016] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Revised: 04/04/2018] [Accepted: 06/09/2018] [Indexed: 10/14/2022]
Abstract
Patients with schizophrenia are at increased risk of engaging in violence towards others, compared to both the general population and most other patient groups. We have here explored the role of cortico-limbic impairments in schizophrenia, and have considered these brain regions specifically within the framework of a popular neuroanatomical model of impulsive aggression. In line with this model, evidence in patients with aggressive schizophrenia implicated structural deficits associated with impaired decision-making, emotional control and evaluation, and social information processing, especially in the orbitofrontal and ventrolateral prefrontal cortex. Given the pivotal role of the orbitofrontal and ventrolateral cortex in emotion control and evaluation, structural deficits may result in inappropriate use of socially relevant information and improper recognition of impulses that are in need for regulation. Furthermore, we have extended the original model and incorporated the striatum, important for the generation of aggressive impulses, as well as the hippocampus, a region critical for decision-making, into the model. Lastly, we discuss the question whether structural impairments are specific to aggressive schizophrenia. Our results suggest, that similar findings can be observed in other aggressive patient populations, making the observed impairments non-specific to aggressive schizophrenia. This points towards a shared condition, across pathologies, a potential common denominator being impulsive aggression.
Collapse
Affiliation(s)
- Marcel P Leclerc
- Department of Psychiatry, Psychotherapy and Psychosomatics, RWTH Aachen University, Germany; JARA - BRAIN Institute 1: Structure Function Relationship, Jülich, Germany.
| | - Christina Regenbogen
- Department of Psychiatry, Psychotherapy and Psychosomatics, RWTH Aachen University, Germany; JARA - BRAIN Institute 1: Structure Function Relationship, Jülich, Germany; Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Roy H Hamilton
- Department of Neurology, University of Pennsylvania, Philadelphia, PA, USA
| | - Ute Habel
- Department of Psychiatry, Psychotherapy and Psychosomatics, RWTH Aachen University, Germany; JARA - BRAIN Institute 1: Structure Function Relationship, Jülich, Germany
| |
Collapse
|
9
|
The Bangor Gambling Task: Characterising the Performance of Survivors of Traumatic Brain Injury. BRAIN IMPAIR 2017. [DOI: 10.1017/brimp.2016.30] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The Bangor Gambling Task (BGT, Bowman & Turnbull, 2004) is a simple test of emotion-based decision making, with contingencies varying across five blocks of 20 trials. This is the first study to characterise BGT performance in survivors of traumatic brain injury (TBI) relative to healthy controls. The study also aimed to explore sub-groups (cluster analysis), and identify predictors of task performance (multiple regression). Thirty survivors of TBI and thirty-nine controls completed the BGT and measures of processing speed, pre-morbid IQ, working memory, and executive function. Results showed that survivors of TBI made more gamble choices than controls (total BGT score), although the groups did not significantly differ when using a cut-off score for ‘impaired’ performance. Unexpectedly, the groups did not significantly differ in their performance across the blocks; however, the cluster analysis revealed three subgroups (with survivors of TBI and controls represented in each cluster). Findings also indicated that only age and group were significant predictors of overall BGT performance. In conclusion, the study findings are consistent with an individual difference account of emotion-based decision making, and a number of issues need to be addressed prior to recommending the clinical use of the BGT.
Collapse
|
10
|
Knox L, Douglas JM, Bigby C. “I’ve never been a yes person”: Decision-making participation and self-conceptualization after severe traumatic brain injury. Disabil Rehabil 2016; 39:2250-2260. [DOI: 10.1080/09638288.2016.1219925] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Lucy Knox
- Living with Disability Research Center, La Trobe University, Victoria, Australia
- Summer Foundation, Victoria, Australia
| | - Jacinta M. Douglas
- Living with Disability Research Center, La Trobe University, Victoria, Australia
- Summer Foundation, Victoria, Australia
| | - Christine Bigby
- Living with Disability Research Center, La Trobe University, Victoria, Australia
| |
Collapse
|
11
|
Tweedie D, Fukui K, Li Y, Yu QS, Barak S, Tamargo IA, Rubovitch V, Holloway HW, Lehrmann E, Wood WH, Zhang Y, Becker KG, Perez E, Van Praag H, Luo Y, Hoffer BJ, Becker RE, Pick CG, Greig NH. Cognitive Impairments Induced by Concussive Mild Traumatic Brain Injury in Mouse Are Ameliorated by Treatment with Phenserine via Multiple Non-Cholinergic and Cholinergic Mechanisms. PLoS One 2016; 11:e0156493. [PMID: 27254111 PMCID: PMC4890804 DOI: 10.1371/journal.pone.0156493] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Accepted: 05/16/2016] [Indexed: 11/18/2022] Open
Abstract
Traumatic brain injury (TBI), often caused by a concussive impact to the head, affects an estimated 1.7 million Americans annually. With no approved drugs, its pharmacological treatment represents a significant and currently unmet medical need. In our prior development of the anti-cholinesterase compound phenserine for the treatment of neurodegenerative disorders, we recognized that it also possesses non-cholinergic actions with clinical potential. Here, we demonstrate neuroprotective actions of phenserine in neuronal cultures challenged with oxidative stress and glutamate excitotoxicity, two insults of relevance to TBI. These actions translated into amelioration of spatial and visual memory impairments in a mouse model of closed head mild TBI (mTBI) two days following cessation of clinically translatable dosing with phenserine (2.5 and 5.0 mg/kg BID x 5 days initiated post mTBI) in the absence of anti-cholinesterase activity. mTBI elevated levels of thiobarbituric acid reactive substances (TBARS), a marker of oxidative stress. Phenserine counteracted this by augmenting homeostatic mechanisms to mitigate oxidative stress, including superoxide dismutase [SOD] 1 and 2, and glutathione peroxidase [GPx], the activity and protein levels of which were measured by specific assays. Microarray analysis of hippocampal gene expression established that large numbers of genes were exclusively regulated by each individual treatment with a substantial number of them co-regulated between groups. Molecular pathways associated with lipid peroxidation were found to be regulated by mTBI, and treatment of mTBI animals with phenserine effectively reversed injury-induced regulations in the ‘Blalock Alzheimer’s Disease Up’ pathway. Together these data suggest that multiple phenserine-associated actions underpin this compound’s ability to ameliorate cognitive deficits caused by mTBI, and support the further evaluation of the compound as a therapeutic for TBI.
Collapse
Affiliation(s)
- David Tweedie
- Translational Gerontology Branch, Intramural Research Program, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, United States of America
| | - Koji Fukui
- Translational Gerontology Branch, Intramural Research Program, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, United States of America
- Division of Bioscience and Engineering, Shibaura Institute of Technology, Saitama 3378570, Japan
| | - Yazhou Li
- Translational Gerontology Branch, Intramural Research Program, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, United States of America
| | - Qian-sheng Yu
- Translational Gerontology Branch, Intramural Research Program, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, United States of America
| | - Shani Barak
- Department of Anatomy and Anthropology, Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, 69978 Israel
| | - Ian A. Tamargo
- Translational Gerontology Branch, Intramural Research Program, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, United States of America
| | - Vardit Rubovitch
- Department of Anatomy and Anthropology, Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, 69978 Israel
| | - Harold W. Holloway
- Translational Gerontology Branch, Intramural Research Program, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, United States of America
| | - Elin Lehrmann
- Laboratory of Genetics and Genomics, Intramural Research Program, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, United States of America
| | - William H. Wood
- Laboratory of Genetics and Genomics, Intramural Research Program, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, United States of America
| | - Yongqing Zhang
- Laboratory of Genetics and Genomics, Intramural Research Program, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, United States of America
| | - Kevin G. Becker
- Laboratory of Genetics and Genomics, Intramural Research Program, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, United States of America
| | - Evelyn Perez
- Laboratory of Behavioral Neuroscience, Intramural Research Program, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, United States of America
| | - Henriette Van Praag
- Laboratory of Neurosciences, Intramural Research Program, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, United States of America
| | - Yu Luo
- Department of Neurosurgery, Case Western Reserve University School of Medicine, Cleveland, OH, United States of America
| | - Barry J. Hoffer
- Department of Neurosurgery, Case Western Reserve University School of Medicine, Cleveland, OH, United States of America
| | - Robert E. Becker
- Translational Gerontology Branch, Intramural Research Program, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, United States of America
- Independent Researcher, 7123 Pinebrook Road, Park City, UT 94098, United States of America
| | - Chaim G. Pick
- Department of Anatomy and Anthropology, Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, 69978 Israel
- Sagol School of Neuroscience, Tel-Aviv University, Tel-Aviv, 69978 Israel
| | - Nigel H. Greig
- Translational Gerontology Branch, Intramural Research Program, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, United States of America
- * E-mail:
| |
Collapse
|
12
|
Goswami R, Dufort P, Tartaglia MC, Green RE, Crawley A, Tator CH, Wennberg R, Mikulis DJ, Keightley M, Davis KD. Frontotemporal correlates of impulsivity and machine learning in retired professional athletes with a history of multiple concussions. Brain Struct Funct 2015; 221:1911-25. [PMID: 25721800 PMCID: PMC4853456 DOI: 10.1007/s00429-015-1012-0] [Citation(s) in RCA: 85] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Accepted: 02/11/2015] [Indexed: 12/15/2022]
Abstract
The frontotemporal cortical network is associated with behaviours such as impulsivity and aggression. The health of the uncinate fasciculus (UF) that connects the orbitofrontal cortex (OFC) with the anterior temporal lobe (ATL) may be a crucial determinant of behavioural regulation. Behavioural changes can emerge after repeated concussion and thus we used MRI to examine the UF and connected gray matter as it relates to impulsivity and aggression in retired professional football players who had sustained multiple concussions. Behaviourally, athletes had faster reaction times and an increased error rate on a go/no-go task, and increased aggression and mania compared to controls. MRI revealed that the athletes had (1) cortical thinning of the ATL, (2) negative correlations of OFC thickness with aggression and task errors, indicative of impulsivity, (3) negative correlations of UF axial diffusivity with error rates and aggression, and (4) elevated resting-state functional connectivity between the ATL and OFC. Using machine learning, we found that UF diffusion imaging differentiates athletes from healthy controls with significant classifiers based on UF mean and radial diffusivity showing 79–84 % sensitivity and specificity, and 0.8 areas under the ROC curves. The spatial pattern of classifier weights revealed hot spots at the orbitofrontal and temporal ends of the UF. These data implicate the UF system in the pathological outcomes of repeated concussion as they relate to impulsive behaviour. Furthermore, a support vector machine has potential utility in the general assessment and diagnosis of brain abnormalities following concussion.
Collapse
Affiliation(s)
- R Goswami
- Canadian Sports Concussion Project, Toronto Western Hospital, Toronto, Canada.,Division of Brain, Imaging and Behaviour-Systems Neuroscience, Toronto Western Research Institute, Toronto Western Hospital, University Health Network, 399 Bathurst Street, Room MP14-306, Toronto, ON, M5T 2S8, Canada
| | - P Dufort
- Canadian Sports Concussion Project, Toronto Western Hospital, Toronto, Canada.,Department of Medical Imaging, Toronto Western Hospital and University of Toronto, Toronto, Canada
| | - M C Tartaglia
- Canadian Sports Concussion Project, Toronto Western Hospital, Toronto, Canada.,Tanz Centre for Research in Neurodegenerative Diseases, University of Toronto, Toronto, Canada.,Division of Neurology, Krembil Neuroscience Centre, Toronto, Canada
| | - R E Green
- Canadian Sports Concussion Project, Toronto Western Hospital, Toronto, Canada.,Toronto Rehabilitation Institute, University Health Network, Toronto, Canada
| | - A Crawley
- Canadian Sports Concussion Project, Toronto Western Hospital, Toronto, Canada.,Division of Brain, Imaging and Behaviour-Systems Neuroscience, Toronto Western Research Institute, Toronto Western Hospital, University Health Network, 399 Bathurst Street, Room MP14-306, Toronto, ON, M5T 2S8, Canada.,Department of Medical Imaging, Toronto Western Hospital and University of Toronto, Toronto, Canada.,Institute of Medical Science, University of Toronto, Toronto, Canada
| | - C H Tator
- Canadian Sports Concussion Project, Toronto Western Hospital, Toronto, Canada.,Division of Brain, Imaging and Behaviour-Systems Neuroscience, Toronto Western Research Institute, Toronto Western Hospital, University Health Network, 399 Bathurst Street, Room MP14-306, Toronto, ON, M5T 2S8, Canada.,Institute of Medical Science, University of Toronto, Toronto, Canada.,Division of Neurosurgery, Krembil Neuroscience Centre, Toronto Western Hospital, Toronto, Canada.,Department of Surgery, University of Toronto, Toronto, Canada
| | - R Wennberg
- Canadian Sports Concussion Project, Toronto Western Hospital, Toronto, Canada.,Division of Neurology, Krembil Neuroscience Centre, Toronto, Canada
| | - D J Mikulis
- Canadian Sports Concussion Project, Toronto Western Hospital, Toronto, Canada.,Division of Brain, Imaging and Behaviour-Systems Neuroscience, Toronto Western Research Institute, Toronto Western Hospital, University Health Network, 399 Bathurst Street, Room MP14-306, Toronto, ON, M5T 2S8, Canada.,Department of Medical Imaging, Toronto Western Hospital and University of Toronto, Toronto, Canada.,Institute of Medical Science, University of Toronto, Toronto, Canada
| | - M Keightley
- Canadian Sports Concussion Project, Toronto Western Hospital, Toronto, Canada.,Department of Occupational Science and Occupational Therapy, University of Toronto and Holland Bloorview Kids Rehabilitation Hospital, Toronto, Canada
| | - Karen D Davis
- Canadian Sports Concussion Project, Toronto Western Hospital, Toronto, Canada. .,Division of Brain, Imaging and Behaviour-Systems Neuroscience, Toronto Western Research Institute, Toronto Western Hospital, University Health Network, 399 Bathurst Street, Room MP14-306, Toronto, ON, M5T 2S8, Canada. .,Institute of Medical Science, University of Toronto, Toronto, Canada. .,Department of Surgery, University of Toronto, Toronto, Canada.
| |
Collapse
|
13
|
Zois E, Kortlang N, Vollstädt-Klein S, Lemenager T, Beutel M, Mann K, Fauth-Bühler M. Decision-making deficits in patients diagnosed with disordered gambling using the Cambridge Gambling task: the effects of substance use disorder comorbidity. Brain Behav 2014; 4:484-94. [PMID: 25161815 PMCID: PMC4107466 DOI: 10.1002/brb3.231] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Accepted: 03/18/2014] [Indexed: 01/28/2023] Open
Abstract
BACKGROUND Disordered gambling (DG) has often been associated with impaired decision-making abilities, suggesting a dysfunction in the ventromedial prefrontal cortex (vmPFC). AIMS To our knowledge, no previous study has accurately considered the effect of substance use disorder (SUD) comorbidity (including nicotine dependence) on decision-making impairments in DG. METHODS AND MATERIALS We employed the Cambridge Gambling Task (CGT) to assess a big cohort of patients diagnosed with DG (N = 80) against matched healthy controls (HCs) (N = 108). The cohort included DG patients with nicotine and alcohol dependence, alcohol dependence only and 12 "pure" nonsmokers with only DG diagnosis. RESULTS Pure nonsmoking, nicotine dependent as well as alcoholic DGs with current nicotine dependence, demonstrated a decision making profile, characterized by poor decision-making abilities and failure to make right choices (rational), closely resembling that of patients with vmPFC damage. DISCUSSION This suggests that DGs with and without SUD comorbidity are equally affected in that domain of decision making abilities. Additionally, gambling diagnosis combined with alcohol and nicotine dependence involves a group of gambling patients with a relatively riskier decision making profile, showing that these patients apart from making irrational decisions take also more risks. Our findings highlight the importance of accounting for SUD comorbidities with useful implications for future research and therapy. Limitations of the current investigation are discussed.
Collapse
Affiliation(s)
- Evangelos Zois
- Department of Addictive Behaviour and Addiction Medicine, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University Mannheim, Germany
| | - Noreen Kortlang
- Department of Addictive Behaviour and Addiction Medicine, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University Mannheim, Germany
| | - Sabine Vollstädt-Klein
- Department of Addictive Behaviour and Addiction Medicine, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University Mannheim, Germany
| | - Tagrid Lemenager
- Department of Addictive Behaviour and Addiction Medicine, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University Mannheim, Germany
| | - Martin Beutel
- Kraichtal-Kliniken Am Mühlberg, 76703, Kraichtal, Germany
| | - Karl Mann
- Department of Addictive Behaviour and Addiction Medicine, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University Mannheim, Germany
| | - Mira Fauth-Bühler
- Department of Addictive Behaviour and Addiction Medicine, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University Mannheim, Germany
| |
Collapse
|
14
|
Hayempour BJ, Alavi A. RETRACTED ARTICLE: Neuroradiological advances detect abnormal neuroanatomy underlying neuropsychological impairments: the power of PET imaging. Eur J Nucl Med Mol Imaging 2013; 40:1462-8. [DOI: 10.1007/s00259-013-2401-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2012] [Accepted: 03/19/2013] [Indexed: 11/24/2022]
|
15
|
Newcombe VFJ, Outtrim JG, Chatfield DA, Manktelow A, Hutchinson PJ, Coles JP, Williams GB, Sahakian BJ, Menon DK. Parcellating the neuroanatomical basis of impaired decision-making in traumatic brain injury. Brain 2011; 134:759-68. [PMID: 21310727 PMCID: PMC3044832 DOI: 10.1093/brain/awq388] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Cognitive dysfunction is a devastating consequence of traumatic brain injury that affects the majority of those who survive with moderate-to-severe injury, and many patients with mild head injury. Disruption of key monoaminergic neurotransmitter systems, such as the dopaminergic system, may play a key role in the widespread cognitive dysfunction seen after traumatic axonal injury. Manifestations of injury to this system may include impaired decision-making and impulsivity. We used the Cambridge Gambling Task to characterize decision-making and risk-taking behaviour, outside of a learning context, in a cohort of 44 patients at least six months post-traumatic brain injury. These patients were found to have broadly intact processing of risk adjustment and probability judgement, and to bet similar amounts to controls. However, a patient preference for consistently early bets indicated a higher level of impulsiveness. These behavioural measures were compared with imaging findings on diffusion tensor magnetic resonance imaging. Performance in specific domains of the Cambridge Gambling Task correlated inversely and specifically with the severity of diffusion tensor imaging abnormalities in regions that have been implicated in these cognitive processes. Thus, impulsivity was associated with increased apparent diffusion coefficient bilaterally in the orbitofrontal gyrus, insula and caudate; abnormal risk adjustment with increased apparent diffusion coefficient in the right thalamus and dorsal striatum and left caudate; and impaired performance on rational choice with increased apparent diffusion coefficient in the bilateral dorsolateral prefrontal cortices, and the superior frontal gyri, right ventrolateral prefrontal cortex, the dorsal and ventral striatum, and left hippocampus. Importantly, performance in specific cognitive domains of the task did not correlate with diffusion tensor imaging abnormalities in areas not implicated in their performance. The ability to dissociate the location and extent of damage with performance on the various task components using diffusion tensor imaging allows important insights into the neuroanatomical basis of impulsivity following traumatic brain injury. The ability to detect such damage in vivo may have important implications for patient management, patient selection for trials, and to help understand complex neurocognitive pathways.
Collapse
Affiliation(s)
- Virginia F. J. Newcombe
- 1 Division of Anaesthesia, Department of Medicine, University of Cambridge, Cambridge, CB2 2QQ, UK,2 Wolfson Brain Imaging Centre, Department of Clinical Neurosciences, University of Cambridge, CB2 2QQ, UK
| | - Joanne G. Outtrim
- 1 Division of Anaesthesia, Department of Medicine, University of Cambridge, Cambridge, CB2 2QQ, UK,2 Wolfson Brain Imaging Centre, Department of Clinical Neurosciences, University of Cambridge, CB2 2QQ, UK
| | - Doris A. Chatfield
- 1 Division of Anaesthesia, Department of Medicine, University of Cambridge, Cambridge, CB2 2QQ, UK,2 Wolfson Brain Imaging Centre, Department of Clinical Neurosciences, University of Cambridge, CB2 2QQ, UK
| | - Anne Manktelow
- 1 Division of Anaesthesia, Department of Medicine, University of Cambridge, Cambridge, CB2 2QQ, UK,2 Wolfson Brain Imaging Centre, Department of Clinical Neurosciences, University of Cambridge, CB2 2QQ, UK
| | - Peter J. Hutchinson
- 2 Wolfson Brain Imaging Centre, Department of Clinical Neurosciences, University of Cambridge, CB2 2QQ, UK,3 Academic Neurosurgery Unit, Department of Clinical Neurosciences, University of Cambridge, CB2 2QQ, UK
| | - Jonathan P. Coles
- 1 Division of Anaesthesia, Department of Medicine, University of Cambridge, Cambridge, CB2 2QQ, UK,2 Wolfson Brain Imaging Centre, Department of Clinical Neurosciences, University of Cambridge, CB2 2QQ, UK
| | - Guy B. Williams
- 1 Division of Anaesthesia, Department of Medicine, University of Cambridge, Cambridge, CB2 2QQ, UK
| | - Barbara J. Sahakian
- 4 Department of Psychiatry, School of Clinical Medicine, University of Cambridge, CB2 2QQ UK,5 MRC/Wellcome Trust Behavioural and Clinical Neuroscience Institute, University of Cambridge, CB2 3EB, UK
| | - David K. Menon
- 1 Division of Anaesthesia, Department of Medicine, University of Cambridge, Cambridge, CB2 2QQ, UK,2 Wolfson Brain Imaging Centre, Department of Clinical Neurosciences, University of Cambridge, CB2 2QQ, UK
| |
Collapse
|
16
|
Bjork JM, Grant SJ. Does traumatic brain injury increase risk for substance abuse? J Neurotrauma 2010; 26:1077-82. [PMID: 19203230 DOI: 10.1089/neu.2008.0849] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Wars in Afghanistan and Iraq have resulted in thousands of military personnel suffering traumatic brain injury (TBI), including closed-head injuries. Of interest is whether these individuals and other TBI survivors are at increased risk for substance use disorder (SUD). While it has been well established that drug or alcohol intoxication itself increases probability of suffering a TBI in accidents or acts of violence, little is known about whether the brain insult itself increases the likelihood that a previously non-drug-abusing individual would develop SUD. Might TBI survivors be unusually vulnerable to addiction to opiate analgesics compared to other pain patients? Similarly, it is not known if TBI increases the likelihood of relapse among persons with SUD in remission. We highlight challenges in answering these questions, and review neurochemical and behavioral evidence that supports a causal relationship between TBI and SUD. In this review, we conclude that little is known regarding the directionality of TBI increasing drug abuse, and that collaborative research in this area is critically needed.
Collapse
Affiliation(s)
- James M Bjork
- Division of Clinical Neuroscience and Behavioral Research, National Institute on Drug Abuse, National Institutes of Health, Bethesda, Maryland 20892, USA.
| | | |
Collapse
|
17
|
Menon D. Biological factors and brain imaging. Med Leg J 2010; 78:33-44; discussion 61-5. [PMID: 20687322 DOI: 10.1258/mlj.2010.010011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- David Menon
- Department of Anaesthesia, University of Cambridge
| |
Collapse
|
18
|
Traumatic brain injury affects the frontomedian cortex--an event-related fMRI study on evaluative judgments. Neuropsychologia 2010; 48:185-93. [PMID: 19747929 DOI: 10.1016/j.neuropsychologia.2009.09.004] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2009] [Revised: 08/18/2009] [Accepted: 09/03/2009] [Indexed: 11/23/2022]
Abstract
Traumatic brain injuries represent the leading cause of death and disability in young adults in industrialized countries. Recently, it has been suggested that dysfunctions of the frontomedian cortex, which enables social cognition, are responsible for clinical deficits in the long-term. To validate this hypothesis, we examined brain activation in seven young adults suffering from diffuse axonal injury during a cognitive task that specifically depends on frontomedian structures, namely evaluative judgments, contrasted with semantic memory retrieval. Brain activation in patients was compared with healthy age and gender matched control subjects using event-related functional magnetic resonance imaging. Evaluative judgments were related to a neural network discussed in the context of self-referential processing and theory of mind. More precisely, the neural network consisted of frontomedian regions, the temporal pole, and the posterior superior temporal gyrus and sulcus/angular gyrus. Patients showed higher activations in this network and the inferior frontal gyrus, whereas healthy control subjects activated more dopaminergic structures, namely the ventral tegmental area, during evaluative judgments. One possible interpretation of the data is that deficits in the ventral tegmental area, and consequently the mesocorticolimbic projection system, have to be compensated for by higher brain activations in the frontomedian and anterior cingulate cortex in patients with diffuse axonal injury. In conclusion, our study supports the hypothesis that traumatic brain injury is characterized by frontomedian dysfunctions, which may be responsible for clinical deficits in the long-term and which might be modified by rehabilitative strategies in the future.
Collapse
|
19
|
Slawik H, Salmond CH, Taylor-Tavares JV, Williams GB, Sahakian BJ, Tasker RC. Frontal cerebral vulnerability and executive deficits from raised intracranial pressure in child traumatic brain injury. J Neurotrauma 2010; 26:1891-903. [PMID: 19929215 DOI: 10.1089/neu.2009.0942] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
In severe pediatric traumatic brain injury (TBI), a common focus of treatment is raised intracranial pressure (ICP). The aim of this investigation was to test whether raised ICP is associated with later prefrontal executive deficits and regional brain tissue loss, consistent with an anterior vascular compartment syndrome. Thirty-three participants were assigned to one of two severe TBI groups based on whether or not they had increased ICP complicating their critical illness. At follow-up (average 3.9 years), the participants underwent magnetic resonance imaging and a battery of neuropsychological testing focused on prefrontal function. The ICP group had white matter loss that was diffuse as well as regional in the corpus callosum, periventricular tissue, and frontal region. Loss of gray matter in the ICP group was more regionally specific, with bilateral loss in the caudate nuclei and frontal regions, including the right dorsolateral region, right supplementary motor area, and the left orbitofrontal cortex. Both groups had normal intelligence quotients (IQs), but the ICP group showed long-term deficits on various measures of attention and executive function such as working memory, decision-making, and impulsivity. These findings suggest that raised ICP leads to diffuse brain injury and a predilection to hypoperfusion in, at least, the distribution of the anterior cerebral artery. Furthermore, since voxel-based morphometry (VBM) and measures of attention and executive function are sensitive to the phenomenon of raised ICP, we consider that these techniques warrant inclusion in trials assessing ICP-directed therapy.
Collapse
Affiliation(s)
- Helen Slawik
- Department of Paediatrics, School of Clinical Medicine, University of Cambridge, Cambridge, United Kingdom
| | | | | | | | | | | |
Collapse
|
20
|
Abstract
OBJECTIVE AND BACKGROUND Decision under ambiguity and decision under risk are fundamental in every-day life. METHODS We investigated these 2 types of decision in traumatic brain injury (TBI) patients through the Iowa Gambling Task (IGT), the Probability-Associated Gambling (PAG) task, and a counsel version of the PAG task. Although in the IGT rules for gain and losses are implicit and probability information is missing, in the PAG task and the counsel task rules are explicit and probabilities are well-defined. RESULTS In the IGT, TBI patients selected more disadvantageously than healthy controls and failed to develop an advantageous strategy over time. Patients also made less advantageous choices than controls in the PAG task and the counsel task. Compared with controls, TBI patients gambled more frequently with low probabilities and less frequently with high probabilities. Overall, participants decided more advantageously in the counsel task, which does not provide feedback, than in the PAG task. Importantly, our results indicate that TBI patients' performance on all decision tasks correlated with executive functions. CONCLUSIONS Our study shows that TBI patients have difficulties in decision under risk and decision under ambiguity. Difficulties may be attributed to deficient learning from feedback and to reduced risk estimation, but not to impulsive risk taking behavior.
Collapse
|
21
|
Narayan VM, Narr KL, Kumari V, Woods RP, Thompson PM, Toga AW, Sharma T. Regional cortical thinning in subjects with violent antisocial personality disorder or schizophrenia. Am J Psychiatry 2007; 164:1418-27. [PMID: 17728428 PMCID: PMC3197838 DOI: 10.1176/appi.ajp.2007.06101631] [Citation(s) in RCA: 99] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Violent behavior is associated with antisocial personality disorder and to a lesser extent with schizophrenia. Neuroimaging studies have suggested that several biological systems are disturbed in schizophrenia, and structural changes in frontal and temporal lobe regions are reported in both antisocial personality disorder and schizophrenia. The neural substrates that underlie violent behavior specifically and their structural analogs, however, remain poorly understood. Nor is it known whether a common biological basis exists for aggressive, impulsive, and violent behavior across these clinical populations. To explore the correlates of violence with brain structure in antisocial personality disorder and schizophrenia, the authors used magnetic resonance imaging data to investigate for the first time, to the authors' knowledge, regional differences in cortical thickness in violent and nonviolent individuals with schizophrenia and/or antisocial personality disorder and in healthy comparison subjects. Subject groups included right-handed men closely matched for demographic variables (total number of subjects=56). Violence was associated with cortical thinning in the medial inferior frontal and lateral sensory motor cortex, particularly in the right hemisphere, and surrounding association areas (Brodmann's areas 10, 11, 12, and 32). Only violent subjects with antisocial personality disorder exhibited cortical thinning in inferior mesial frontal cortices. The biological underpinnings of violent behavior may therefore vary between these two violent subject groups in which the medial frontal cortex is compromised in antisocial personality disorder exclusively, but laminar abnormalities in sensorimotor cortices may relate to violent behavior in both antisocial personality disorder and schizophrenia.
Collapse
Affiliation(s)
- Veena M Narayan
- Laboratory of Neuro Imaging, Ahmanson-Lovelace Brain Mapping Center, Department of Neurology, David Geffen School of Medicine, UCLA, Los Angeles, CA, USA
| | | | | | | | | | | | | |
Collapse
|
22
|
Schroeter ML, Ettrich B, Schwier C, Scheid R, Guthke T, von Cramon DY. Diffuse axonal injury due to traumatic brain injury alters inhibition of imitative response tendencies. Neuropsychologia 2007; 45:3149-56. [PMID: 17727901 DOI: 10.1016/j.neuropsychologia.2007.07.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2006] [Revised: 06/27/2007] [Accepted: 07/09/2007] [Indexed: 11/19/2022]
Abstract
It is well known that traumatic brain injury particularly affects the frontal lobes. Consequently, patients often suffer from executive dysfunction and behavioral disturbances. Accordingly, our study aimed at investigating patients after traumatic brain injury with two tasks involving different functional processes and structural networks supported by the frontal lobes. Two paradigms were applied: the Stroop color-word task and a task in which subjects had to inhibit imitative response tendencies. We selected a patient group solely with diffuse axonal injury, as this type of injury is homogenous and is correlated with cognitive dysfunction more than focal contusions. To evaluate long-term effects most relevant for rehabilitation, we selected a patient group whose brain injuries dated back several years. Our results show that patients with diffuse axonal injury inhibited imitative responses more successfully than control subjects, whereas executive processes examined with the Stroop task were unaltered. Interestingly, impairments were tightly correlated both with the length of the post-traumatic amnesia predicting outcome in traumatic brain injury and with behavioral disturbances. Impairments in the imitation-inhibition task may indicate alterations in an anterior frontomedian neural network even years after traumatic brain injury.
Collapse
Affiliation(s)
- Matthias L Schroeter
- Max-Planck-Institute for Human Cognitive and Brain Sciences, Stephanstr. 1A, 04103 Leipzig, Germany.
| | | | | | | | | | | |
Collapse
|
23
|
Larson MJ, Kelly KG, Stigge-Kaufman DA, Schmalfuss IM, Perlstein WM. Reward context sensitivity impairment following severe TBI: an event-related potential investigation. J Int Neuropsychol Soc 2007; 13:615-25. [PMID: 17521495 DOI: 10.1017/s1355617707070762] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2006] [Revised: 01/31/2007] [Accepted: 02/01/2007] [Indexed: 11/05/2022]
Abstract
Many rehabilitation protocols following traumatic brain injury (TBI) utilize reinforcement and reward to influence behavior and facilitate recovery; however, previous studies suggest survivors of severe TBI demonstrate impairments in contingency utilization and sensitivity. The precise neurobiological mechanisms underlying these deficits have not been thoroughly explored, but can be examined using the "feedback-related negativity" (FRN)--an event-related potential (ERP) component evoked following performance or response feedback (e.g., whether a monetary reward is obtained) with a larger FRN following unfavorable than favorable outcomes--particularly when unfavorable feedback occurs in the context of high reward probability. We examined ERPs elicited by favorable (monetary gain: "reward") and unfavorable (no monetary gain: "non-reward") feedback during a guessing task where probability of reward outcome was manipulated in survivors of severe TBI and demographically matched healthy participants. Consistent with previous findings, controls showed larger amplitude FRN to non-reward feedback and the largest amplitude FRN following a non-reward when reward probability context was greatest. In contrast, FRN in TBI participants did not significantly differentiate non-reward from reward trials and their FRN was largest to reward trials in the low reward probability context. Findings implicate an electrophysiological marker of impaired reward context sensitivity following severe TBI.
Collapse
Affiliation(s)
- Michael J Larson
- Department of Clinical and Health Psychology, University of Florida, Gainesville, Florida 32610, USA
| | | | | | | | | |
Collapse
|
24
|
Abstract
The development of the frontal systems is a major evolutionary advancement of the human race. It enables the regulation of behaviors in accordance with goals and, hence, frees humans from the constraints imposed by our basic physiological instincts. The burgeoning neuroscience and neuropsychology literature has consistently highlighted the important roles played by the prefrontal cortex and the anterior cingulate cortex in effective and efficient regulation of behaviors. On the other hand, aging is associated with changes in the neural network subserving behavioral regulation. Different neuropathologies also impact upon the function of the prefrontal cortex–anterior cingulate cortex system. Therefore, our brains require neural mechanisms in place that can facilitate functional recovery after brain injuries. Future research to enhance theoretical understanding of the neural mechanisms underlying the regulation of behaviors would contribute to the development of cost–effective treatment modalities that promote maximum functional return in people recovering from brain dysfunctions.
Collapse
Affiliation(s)
- Tatia MC Lee
- The University of Hong Kong, K610, Laboratory of Neuropsychology, Pokfulam Road, Hong Kong, China, and, MacLehose Medical Rehabilitation Centre & The University of Hong Kong, Institute of Clinical Neuropsychology, Hong Kong, China
| | - Ada WS Leung
- The University of Hong Kong, K640, Laboratory of Neuropsychology, Pokfulam Road, Hong Kong, China, and, The Hong Kong Polytechnic University, Laboratory of Applied Cognitive Neuroscience, Department of Rehabilitation Sciences, Hong Kong, China
| | - Chetwyn CH Chan
- The Hong Kong Polytechnic University, Laboratory of Applied Cognitive Neuroscience, Department of Rehabilitation Sciences, Hong Kong, China
| |
Collapse
|
25
|
Pickard JD, Hutchinson PJ, Coles JP, Steiner LA, Johnston AJ, Fryer TD, Coleman MR, Smielewski P, Chatfield DA, Aigbirhio F, Williams GB, Rice K, Clark JC, Salmond CH, Sahakian BJ, Bradley PG, Carpenter TA, Salvador R, Pena A, Gillard JH, Cunningham AS, Piechnik S, Czosnyka M, Menon DK. Imaging of cerebral blood flow and metabolism in brain injury in the ICU. ACTA NEUROCHIRURGICA. SUPPLEMENT 2006; 95:459-64. [PMID: 16463901 DOI: 10.1007/3-211-32318-x_94] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
Abstract
The heterogeneity of the initial insult and subsequent pathophysiology has made both the study of human head injury and design of randomised controlled trials exceptionally difficult. The combination of multimodality bedside monitoring and functional brain imaging positron emission tomography (PET) and magnetic resonance (MR), incorporated within a Neurosciences Critical Care Unit, provides the resource required to study critically ill patients after brain injury from initial ictus through recovery from coma and rehabilitation to final outcome. Methods to define cerebral ischemia in the context of altered cerebral oxidative metabolism have been developed, traditional therapies for intracranial hypertension re-evaluated and bedside monitors cross-validated. New modelling and analytical approaches have been developed.
Collapse
Affiliation(s)
- J D Pickard
- Wolfson Brain Imaging Centre, University of Cambridge, Addenbrookes Hospital, Cambridge, UK.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
26
|
Parton A, Coulthard E, Husain M. Neuropharmacological modulation of cognitive deficits after brain damage. Curr Opin Neurol 2006; 18:675-80. [PMID: 16280679 DOI: 10.1097/01.wco.0000189872.54245.13] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE OF REVIEW This review discusses recent studies that have implications for potential neuropharmacological interventions which target cognitive deficits resulting from traumatic brain injury or stroke. RECENT FINDINGS An important new study concerning the activity of N-methyl-D-aspartate (NMDA) receptors after brain injury reveals that previous influential hypotheses about an increase in glutamate triggering neuronal death may need to be revised. Furthermore, the study suggests that cognitive function may be best preserved by stimulation of NMDA receptors with agonists rather than by the use of antagonists, as previously believed. Investigations of animal models of stroke and traumatic brain injury have further demonstrated the possibility of intervening in the acute and sub-acute stages to protect specific brain systems, such as preservation of the cholinergic system (via cholinesterase inhibitors) and hippocampal neurons (via a D2 agonist). Clinical trials in humans indicate it is also possible to target these neurotransmitter systems to enhance cognitive performance in patients with chronic deficits. In particular, recent studies demonstrated that it is possible to ameliorate the effects of two common cognitive syndromes, visual neglect and aphasia. SUMMARY Cognitive deficits are an extremely common consequence of either traumatic brain injury or stroke. Recent studies demonstrate the potential for using neuropharmacological intervention after acquired brain injury to prevent or ameliorate the effects of cognitive impairments. These treatments, however, are still in their preliminary stages and further research is required to identify the most effective compounds.
Collapse
Affiliation(s)
- Andrew Parton
- Imperial College, Division of Neuroscience and Mental Health, Charing Cross Hospital, and Institute of Cognitive Neuroscience, University College London, London, UK.
| | | | | |
Collapse
|
27
|
Brody DL, Holtzman DM. Morris water maze search strategy analysis in PDAPP mice before and after experimental traumatic brain injury. Exp Neurol 2005; 197:330-40. [PMID: 16309676 PMCID: PMC1913184 DOI: 10.1016/j.expneurol.2005.10.020] [Citation(s) in RCA: 142] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2005] [Revised: 09/13/2005] [Accepted: 10/12/2005] [Indexed: 11/23/2022]
Abstract
Traumatic brain injury (TBI) is a common cause of cognitive dysfunction and a major risk factor for Alzheimer's disease (AD). PDAPP mice, a transgenic line overexpressing a mutant human amyloid precursor protein (APP) implicated in familial AD, have markedly impaired behavioral performance in the Morris water maze relative to wild-type (WT) littermates. Performance further deteriorates following experimental TBI in both PDAPP and WT mice. However, the aspects of cognitive function involved are not well understood. Here, we have analyzed search strategies used in the water maze by 3-4 month old PDAPP and WT C57Bl6 littermates both before and after moderate controlled cortical impact TBI. Prior to TBI, PDAPP mice used less spatial strategies and more nonspatial systematic strategies and strategies involving repetitive looping than WT mice. With training, PDAPP mice used more spatial strategies and less repetitive looping. After TBI, PDAPP mice lost use of spatial strategies and relied more on repetitive looping. TBI in WT mice also reduced their use of spatial strategies but instead caused a switch to nonspatial systematic strategies. We also analyzed changes in the efficiency with which mice used each individual strategy, but found that differences in which strategies were used quantitatively accounted for most of the differences in performance between groups. These results demonstrate that suboptimal search strategy use in addition to effects on spatial learning and memory underlies the impaired performance of PDAPP mice and further deterioration following TBI. Human TBI patients may have analogous poor use of problem solving strategies.
Collapse
Affiliation(s)
- David L Brody
- Department of Neurology, Washington University, 660 S. Euclid Ave., Box 8111, St. Louis, MO 63110, USA.
| | | |
Collapse
|