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Luo Y, Xiao M, Chen X, Zeng W, Chen H. Harsh, unpredictable childhood environments are associated with inferior frontal gyrus connectivity and binge eating tendencies in late adolescents. Appetite 2024; 195:107210. [PMID: 38266713 DOI: 10.1016/j.appet.2024.107210] [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: 05/10/2023] [Revised: 12/03/2023] [Accepted: 01/09/2024] [Indexed: 01/26/2024]
Abstract
Harsh, unpredictable childhood environments (HUCE) are associated with obesity older in life, but knowledge of how HUCE affect binge eating tendencies is lacking. Five hundred and one late adolescents aged 16-22 were recruited to finish resting state functional magnetic resonance imaging scan, behavioral measures including retrospective recall of childhood environmental harshness and unpredictability, binge eating tendencies and demographics. Three hundred and seventy-six of participants further completed the computerized visual probe task designed to evaluate attentional engagement towards high and low calorie food. As right inferior frontal gyrus (IFG) was the key nodes that related to both early life adversity and binge eating tendencies, it was treated as the interest region in the dynamic functional connectivity analyses. Results found that HUCE are associated with significant but modest decreases in connectivity of right inferior frontal gyrus (IFG)- bilateral medial frontal gyrus, right IFG - bilateral inferior parietal lobule (IPL), and right IFG - left superior frontal gyrus connectivity, as well as attentional engagement to high-calorie food and binge eating tendencies. A machine-learning method named linear support vector regression (SVR) and leave one out cross-validation (LOOCV) procedure used to examine the robustness of the brain-behavior relationship further confirm the findings. Mediation analyses suggested that right IFG - left IPL connectivity mediates the association of HUCE and binge eating tendencies. Findings suggest right IFG - left IPL connectivity may serve as a crucial neurobiological underpinning of HUCE to regulate binge eating behaviors. As such, these results contribute to a novel perspective and hypotheses in elucidating developmental neuro-mechanisms related to binge eating.
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Affiliation(s)
- Yijun Luo
- School of Psychology, Southwest University, Chongqing, 400715, China; Key Laboratory of Cognition and Personality (Ministry of Education), Southwest University, Chongqing, 400715, China
| | - Minyue Xiao
- School of Psychology, Southwest University, Chongqing, 400715, China; Key Laboratory of Cognition and Personality (Ministry of Education), Southwest University, Chongqing, 400715, China
| | - Ximei Chen
- School of Psychology, Southwest University, Chongqing, 400715, China; Key Laboratory of Cognition and Personality (Ministry of Education), Southwest University, Chongqing, 400715, China
| | - Weiyu Zeng
- School of Psychology, Southwest University, Chongqing, 400715, China; Key Laboratory of Cognition and Personality (Ministry of Education), Southwest University, Chongqing, 400715, China
| | - Hong Chen
- School of Psychology, Southwest University, Chongqing, 400715, China; Key Laboratory of Cognition and Personality (Ministry of Education), Southwest University, Chongqing, 400715, China.
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Yang L, Li H, Meng Y, Shi Y, Ge A, Zhang G, Liu C. Dynamic changes in brain structure in patients with post-traumatic stress disorder after motor vehicle accident: A voxel-based morphometry-based follow-up study. Front Psychol 2022; 13:1018276. [PMID: 36275224 PMCID: PMC9583256 DOI: 10.3389/fpsyg.2022.1018276] [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: 08/13/2022] [Accepted: 09/22/2022] [Indexed: 11/13/2022] Open
Abstract
Objectives To investigate the dynamic changes of emotional and memory-related brain regions in post-traumatic stress disorder (PTSD) patients and trauma-exposed subjects, who experienced motor vehicle accident (MVA). Materials and methods Functional Magnetic Resonance imaging (fMRI) and general data were collected from trauma victims who had experienced MVA within 2 days, and their social support and coping style were evaluated. The PTSD Checklist for Diagnostic and Statistical Manual of Mental Disorders-Fifth Edition (PCL-5) is used for screening and diagnosis. Subsequently, 17 PTSD patients and 23 car accident trauma-exposed individuals completed a second fMRI scan at 2 months. Data were analyzed by using voxel-based morphometry (VBM) to examine the volume changes of relevant brain regions. Correlation analysis was used to assess the correlation between the regions of interest (ROIs) and the total scores on the clinical scales. Subsequently, the relationship between the total PCL-5 scores and the individual dimensions of the Simplified Coping Style Questionnaire (SCSQ) and the Social Support Rate Scale (SSRS) was studied. Results In comparison with the control group, the results showed a reduction in right SFG volume in the PTSD group at 2 months. Similarly, a comparison within the PTSD group revealed a reduction in the left STG volume at 2 months. Compared with the control group, PTSD patients showed a more negative coping style and worse performance in objective and subjective support. In addition, the total PCL-5 scores were negatively associated with positive coping, objective support, and subjective support. Conclusion The occurrence of PTSD may be related to reduced volume of the right SFG and left STG, and that patients with PTSD receive less social support and tend to cope in a negative manner in the face of stressful events. These results suggest that within 2 months of the MVA, changes in gray matter volume have occurred in some brain regions of those suffering from PTSD. We believe the results of our study will provide useful insights into the neuropsychological mechanisms underlying PTSD.
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Affiliation(s)
- Luodong Yang
- Shihezi University School of Medicine, Shihezi, China
| | - Haohao Li
- First Affiliated Hospital of Shihezi University School of Medicine, Shihezi, China
| | - Yao Meng
- First Affiliated Hospital of Shihezi University School of Medicine, Shihezi, China
| | - Yan Shi
- Shihezi University School of Medicine, Shihezi, China
| | - Anxin Ge
- Shihezi University School of Medicine, Shihezi, China
| | - Guiqing Zhang
- First Affiliated Hospital of Shihezi University School of Medicine, Shihezi, China
| | - Chaomeng Liu
- Beijing Key Laboratory of Mental Disorders, National Clinical Research Center for Mental Disorders and National Center for Mental Disorders, Beijing Anding Hospital, Capital Medical University, Beijing, China
- Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing, China
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Chen HJ, Qi R, Ke J, Qiu J, Xu Q, Zhong Y, Lu GM, Chen F. Evaluation of gray matter reduction in patients with typhoon-related posttraumatic stress disorder using causal network analysis of structural MRI. Psychol Med 2022; 52:1481-1490. [PMID: 32938511 DOI: 10.1017/s0033291720003281] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
BACKGROUND The structural changes recent-onset posttraumatic stress disorder (PTSD) subjects were rarely investigated. This study was to compare temporal and causal relationships of structural changes in recent-onset PTSD with trauma-exposed control (TEC) subjects and non-TEC subjects. METHODS T1-weighted magnetic resonance images of 27 PTSD, 33 TEC and 30 age- and sex-matched healthy control (HC) subjects were studied. The causal network of structural covariance was used to evaluate the causal relationships of structural changes in PTSD patients. RESULTS Volumes of bilateral hippocampal and left lingual gyrus were significantly smaller in PTSD patients and TEC subjects than HC subjects. As symptom scores increase, reduction in gray matter volume began in the hippocampus and progressed to the frontal lobe, then to the temporal and occipital cortices (p < 0.05, false discovery rate corrected). The hippocampus might be the primary hub of the directional network and demonstrated positive causal effects on the frontal, temporal and occipital regions (p < 0.05, false discovery rate corrected). The frontal regions, which were identified to be transitional points, projected causal effects to the occipital lobe and temporal regions and received causal effects from the hippocampus (p < 0.05, false discovery rate corrected). CONCLUSIONS The results offer evidence of localized abnormalities in the bilateral hippocampus and remote abnormalities in multiple temporal and frontal regions in typhoon-exposed PTSD patients.
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Affiliation(s)
- Hui Juan Chen
- Department of Radiology, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), NO. 19, XIUHUA ST, XIUYING DIC, Haikou, 570311, Hainan, P.R. China
| | - Rongfeng Qi
- Department of Medical Imaging, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210002, China
| | - Jun Ke
- Department of Medical Imaging, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210002, China
- Department of Radiology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province 215006, China
| | - Jie Qiu
- Department of Ultrasound, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), NO. 19, XIUHUA ST, XIUYING DIC, Haikou, 570311, Hainan, P.R. China
| | - Qiang Xu
- Department of Medical Imaging, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210002, China
| | - Yuan Zhong
- Department of Medical Imaging, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210002, China
| | - Guang Ming Lu
- Department of Medical Imaging, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210002, China
| | - Feng Chen
- Department of Radiology, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), NO. 19, XIUHUA ST, XIUYING DIC, Haikou, 570311, Hainan, P.R. China
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Rebello K, Moura LM, Bueno APA, Picon FA, Pan PM, Gadelha A, Miguel EC, Bressan RA, Rohde LA, Sato JR. Associations between Family Functioning and Maternal Behavior on Default Mode Network Connectivity in School-Age Children. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19106055. [PMID: 35627592 PMCID: PMC9141331 DOI: 10.3390/ijerph19106055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 04/16/2022] [Accepted: 05/03/2022] [Indexed: 02/04/2023]
Abstract
Background: Most early children's experiences will occur in a family context; therefore, the quality of this environment is critical for development outcomes. Not many studies have assessed the correlations between brain functional connectivity (FC) in important areas such as the default mode network (DMN) and the quality of parent-child relationships in school-age children and early adolescence. The quality of family relationships and maternal behavior have been suggested to modulate DMN FC once they act as external regulators of children's affect and behavior. Objective: We aimed to test the associations between the quality of family environment/maternal behavior and FC within the DMN of school-age children. Method: Resting-state, functional magnetic resonance imaging data, were collected from 615 children (6-12 age range) enrolled in the Brazilian High-Risk Cohort (HRC) study. We assessed DMN intra-connectivity between the medial prefrontal cortex (mPFC), posterior cingulate cortex (PCC), and inferior parietal lobule (IPL-bilateral) regions. The family functioning was assessed by levels of family cohesiveness and conflict and by maternal behavior styles such as maternal responsiveness, maternal stimulus to the child's autonomy, and maternal overprotection. The family environment was assessed with the Family Environment Scale (FES), and maternal behavior was assessed by the mother's self-report. Results: We found that the quality of the family environment was correlated with intra-DMN FC. The more conflicting the family environment was, the greater the FC between the mPFC-left IPL (lIPL), while a more cohesive family functioning was negatively correlated with FC between the PCC-lIPL. On the other hand, when moderated by a positive maternal behavior, cohesive family functioning was associated with increased FC in both regions of the DMN (mPFC-lIPL and PCC-lIPL). Conclusions: Our results highlight that the quality of the family environment might be associated with differences in the intrinsic DMN FC.
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Affiliation(s)
- Keila Rebello
- Center of Mathematics, Computing and Cognition, Universidade Federal do ABC, Santo André 09210-580, Brazil; (K.R.); (L.M.M.); (A.P.A.B.)
| | - Luciana Monteiro Moura
- Center of Mathematics, Computing and Cognition, Universidade Federal do ABC, Santo André 09210-580, Brazil; (K.R.); (L.M.M.); (A.P.A.B.)
- Interdisciplinary Lab for Clinical Neurosciences, Universidade Federal de São Paulo, São Paulo 04021-001, Brazil; (P.M.P.); (A.G.); (R.A.B.)
- National Institute of Developmental Psychiatry for Children and Adolescents (CNPq), São Paulo 01060-970, Brazil; (F.A.P.); (E.C.M.); (L.A.R.)
| | - Ana Paula Arantes Bueno
- Center of Mathematics, Computing and Cognition, Universidade Federal do ABC, Santo André 09210-580, Brazil; (K.R.); (L.M.M.); (A.P.A.B.)
| | - Felipe Almeida Picon
- National Institute of Developmental Psychiatry for Children and Adolescents (CNPq), São Paulo 01060-970, Brazil; (F.A.P.); (E.C.M.); (L.A.R.)
- ADHD Outpatient Program & Developmental Psychiatry Program, Hospital de Clínicas de Porto Alegre, Federal University of Rio Grande do Sul, Porto Alegre 90010-150, Brazil
| | - Pedro Mario Pan
- Interdisciplinary Lab for Clinical Neurosciences, Universidade Federal de São Paulo, São Paulo 04021-001, Brazil; (P.M.P.); (A.G.); (R.A.B.)
- National Institute of Developmental Psychiatry for Children and Adolescents (CNPq), São Paulo 01060-970, Brazil; (F.A.P.); (E.C.M.); (L.A.R.)
| | - Ary Gadelha
- Interdisciplinary Lab for Clinical Neurosciences, Universidade Federal de São Paulo, São Paulo 04021-001, Brazil; (P.M.P.); (A.G.); (R.A.B.)
- National Institute of Developmental Psychiatry for Children and Adolescents (CNPq), São Paulo 01060-970, Brazil; (F.A.P.); (E.C.M.); (L.A.R.)
| | - Euripedes Constatino Miguel
- National Institute of Developmental Psychiatry for Children and Adolescents (CNPq), São Paulo 01060-970, Brazil; (F.A.P.); (E.C.M.); (L.A.R.)
- Department of Psychiatry, School of Medicine, University of São Paulo, São Paulo 05508-070, Brazil
| | - Rodrigo Affonseca Bressan
- Interdisciplinary Lab for Clinical Neurosciences, Universidade Federal de São Paulo, São Paulo 04021-001, Brazil; (P.M.P.); (A.G.); (R.A.B.)
- National Institute of Developmental Psychiatry for Children and Adolescents (CNPq), São Paulo 01060-970, Brazil; (F.A.P.); (E.C.M.); (L.A.R.)
| | - Luis Augusto Rohde
- National Institute of Developmental Psychiatry for Children and Adolescents (CNPq), São Paulo 01060-970, Brazil; (F.A.P.); (E.C.M.); (L.A.R.)
- ADHD Outpatient Program & Developmental Psychiatry Program, Hospital de Clínicas de Porto Alegre, Federal University of Rio Grande do Sul, Porto Alegre 90010-150, Brazil
| | - João Ricardo Sato
- Center of Mathematics, Computing and Cognition, Universidade Federal do ABC, Santo André 09210-580, Brazil; (K.R.); (L.M.M.); (A.P.A.B.)
- Interdisciplinary Lab for Clinical Neurosciences, Universidade Federal de São Paulo, São Paulo 04021-001, Brazil; (P.M.P.); (A.G.); (R.A.B.)
- National Institute of Developmental Psychiatry for Children and Adolescents (CNPq), São Paulo 01060-970, Brazil; (F.A.P.); (E.C.M.); (L.A.R.)
- ADHD Outpatient Program & Developmental Psychiatry Program, Hospital de Clínicas de Porto Alegre, Federal University of Rio Grande do Sul, Porto Alegre 90010-150, Brazil
- Correspondence:
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Li L, Zhang Y, Zhao Y, Li Z, Kemp GJ, Wu M, Gong Q. Cortical thickness abnormalities in patients with post-traumatic stress disorder: A vertex-based meta-analysis. Neurosci Biobehav Rev 2022; 134:104519. [PMID: 34979190 DOI: 10.1016/j.neubiorev.2021.104519] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 12/21/2021] [Accepted: 12/30/2021] [Indexed: 02/05/2023]
Abstract
Neuroimaging studies report altered cortical thickness in patients with post-traumatic stress disorder (PTSD), but the results are inconsistent. Using anisotropic effect-size seed-based d mapping (AES-SDM) software with its recently-developed meta-analytic thickness mask, we conducted a meta-analysis of published studies which used whole-brain surface-based morphometry, in order to define consistent cortical thickness alterations in PTSD patients. Eleven studies with 438 patients and 396 controls were included. Compared with all controls, patients with PTSD showed increased cortical thickness in right superior temporal gyrus, and in left and right superior frontal gyrus; the former survived in subgroup analysis of adult patients, and in subgroup comparison with only non-PTSD trauma-exposed controls, the latter in subgroup comparison with only non-trauma-exposed healthy controls. Cortical thickness in right superior frontal gyrus was positively associated with percentage of female patients, and cortical thickness in left superior frontal gyrus was positively associated with symptom severity measured by the clinician-administered PTSD scale. These robust results may help to elucidate the pathophysiology of PTSD.
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Affiliation(s)
- Lei Li
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, PR China; Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, Sichuan, China; Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Yu Zhang
- Department of Radiology, West China Hospital of Sichuan University, Chengdu, PR China
| | - Youjin Zhao
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, PR China
| | - Zhenlin Li
- Department of Radiology, West China Hospital of Sichuan University, Chengdu, PR China
| | - Graham J Kemp
- Liverpool Magnetic Resonance Imaging Centre and Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, UK
| | - Min Wu
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, PR China.
| | - Qiyong Gong
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, PR China; Department of Radiology, West China Xiamen Hospital of Sichuan University, Xiamen, Fujian, China.
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6
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Lanka P, Rangaprakash D, Dretsch MN, Katz JS, Denney TS, Deshpande G. Supervised machine learning for diagnostic classification from large-scale neuroimaging datasets. Brain Imaging Behav 2020; 14:2378-2416. [PMID: 31691160 PMCID: PMC7198352 DOI: 10.1007/s11682-019-00191-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
There are growing concerns about the generalizability of machine learning classifiers in neuroimaging. In order to evaluate this aspect across relatively large heterogeneous populations, we investigated four disorders: Autism spectrum disorder (N = 988), Attention deficit hyperactivity disorder (N = 930), Post-traumatic stress disorder (N = 87) and Alzheimer's disease (N = 132). We applied 18 different machine learning classifiers (based on diverse principles) wherein the training/validation and the hold-out test data belonged to samples with the same diagnosis but differing in either the age range or the acquisition site. Our results indicate that overfitting can be a huge problem in heterogeneous datasets, especially with fewer samples, leading to inflated measures of accuracy that fail to generalize well to the general clinical population. Further, different classifiers tended to perform well on different datasets. In order to address this, we propose a consensus-classifier by combining the predictive power of all 18 classifiers. The consensus-classifier was less sensitive to unmatched training/validation and holdout test data. Finally, we combined feature importance scores obtained from all classifiers to infer the discriminative ability of connectivity features. The functional connectivity patterns thus identified were robust to the classification algorithm used, age and acquisition site differences, and had diagnostic predictive ability in addition to univariate statistically significant group differences between the groups. A MATLAB toolbox called Machine Learning in NeuroImaging (MALINI), which implements all the 18 different classifiers along with the consensus classifier is available from Lanka et al. (2019) The toolbox can also be found at the following URL: https://github.com/pradlanka/malini .
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Affiliation(s)
- Pradyumna Lanka
- AU MRI Research Center, Department of Electrical and Computer Engineering, Auburn University, 560 Devall Dr., Suite 266D, Auburn, AL, 36849, USA
- Department of Psychological Sciences, University of California Merced, Merced, CA, USA
| | - D Rangaprakash
- AU MRI Research Center, Department of Electrical and Computer Engineering, Auburn University, 560 Devall Dr., Suite 266D, Auburn, AL, 36849, USA
- Departments of Radiology and Biomedical Engineering, Northwestern University, Chicago, IL, USA
| | - Michael N Dretsch
- U.S. Army Aeromedical Research Laboratory, Fort Rucker, AL, USA
- US Army Medical Research Directorate-West, Walter Reed Army Institute for Research, Joint Base Lewis-McCord, WA, USA
- Department of Psychology, Auburn University, Auburn, AL, USA
| | - Jeffrey S Katz
- AU MRI Research Center, Department of Electrical and Computer Engineering, Auburn University, 560 Devall Dr., Suite 266D, Auburn, AL, 36849, USA
- Department of Psychology, Auburn University, Auburn, AL, USA
- Alabama Advanced Imaging Consortium, Birmingham, AL, USA
- Center for Neuroscience, Auburn University, Auburn, AL, USA
| | - Thomas S Denney
- AU MRI Research Center, Department of Electrical and Computer Engineering, Auburn University, 560 Devall Dr., Suite 266D, Auburn, AL, 36849, USA
- Department of Psychology, Auburn University, Auburn, AL, USA
- Alabama Advanced Imaging Consortium, Birmingham, AL, USA
- Center for Neuroscience, Auburn University, Auburn, AL, USA
| | - Gopikrishna Deshpande
- AU MRI Research Center, Department of Electrical and Computer Engineering, Auburn University, 560 Devall Dr., Suite 266D, Auburn, AL, 36849, USA.
- Department of Psychology, Auburn University, Auburn, AL, USA.
- Alabama Advanced Imaging Consortium, Birmingham, AL, USA.
- Center for Neuroscience, Auburn University, Auburn, AL, USA.
- Center for Health Ecology and Equity Research, Auburn University, Auburn, AL, USA.
- Department of Psychiatry, National Institute of Mental and Neurosciences, Bangalore, India.
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Park YW, Jun S, Noh J, Chung SJ, Han S, Lee PH, Kim C, Lee SK. Structural and Resting-State Brain Alterations in Trauma-Exposed Firefighters: Preliminary Results. JOURNAL OF THE KOREAN SOCIETY OF RADIOLOGY 2020; 81:676-687. [PMID: 36238613 PMCID: PMC9431906 DOI: 10.3348/jksr.2020.81.3.676] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 10/08/2019] [Accepted: 10/14/2019] [Indexed: 12/17/2022]
Abstract
Purpose To analyze the altered brain regions and intrinsic brain activity patterns in trauma-exposed firefighters without posttraumatic stress disorder (PTSD). Materials and Methods Resting-state functional MRI (rsfMRI) was performed for all subjects. Thirty-one firefighters over 40 years of age without PTSD (31 men; mean age, 49.8 ± 4.7 years) were included. Twenty-six non-traumatized healthy controls (HCs) (26 men; mean age, 65.3 ± 7.84 years) were also included. Voxel-based morphometry was performed to investigate focal differences in the brain anatomy. Seed-based functional connectivity analysis was performed to investigate differences in spontaneous brain characteristics. Results The mean z-scores of the Seoul Verbal Learning Test for immediate and delayed recall, Controlled Oral Word Association Test (COWAT) score for animals, and COWAT phonemic fluency were significantly lower in the firefighter group than in the HCs, indicating decreased neurocognitive function. Compared to HCs, firefighters showed reduced gray matter volume in the left superior parietal gyrus and left inferior temporal gyrus. Further, in contrast to HCs, firefighters showed alterations in rsfMRI values in multiple regions, including the fusiform gyrus and cerebellum. Conclusion Structural and resting-state functional abnormalities in the brain may be useful imaging biomarkers for identifying alterations in trauma-exposed firefighters without PTSD.
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Affiliation(s)
- Yae Won Park
- Department of Radiology, Ewha Womans University College of Medicine, Seoul, Korea
- Department of Radiology, Research Institute of Radiological Science, Yonsei University College of Medicine, Seoul, Korea
| | - Suhnyoung Jun
- Department of Psychology, Yonsei University College of Medicine, Seoul, Korea
| | - Juwhan Noh
- Department of Preventive Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Seok Jong Chung
- Department of Neurology, Brain Research Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Sanghoon Han
- Department of Psychology, Yonsei University College of Medicine, Seoul, Korea
| | - Phil Hyu Lee
- Department of Neurology, Brain Research Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Changsoo Kim
- Department of Preventive Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Seung-Koo Lee
- Department of Radiology, Research Institute of Radiological Science, Yonsei University College of Medicine, Seoul, Korea
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8
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Zheng C, Huang Y, Bo B, Wei L, Liang Z, Wang Z. Projection from the Anterior Cingulate Cortex to the Lateral Part of Mediodorsal Thalamus Modulates Vicarious Freezing Behavior. Neurosci Bull 2019; 36:217-229. [PMID: 31531804 DOI: 10.1007/s12264-019-00427-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Accepted: 05/26/2019] [Indexed: 01/10/2023] Open
Abstract
Emotional contagion, a primary form of empathy, is present in rodents. Among emotional contagion behaviors, social transmission of fear is the most studied. Here, we modified a paradigm used in previous studies to more robustly assess the social transmission of fear in rats that experienced foot-shock. We used resting-state functional magnetic resonance imaging to show that foot-shock experience enhances the regional connectivity of the anterior cingulate cortex (ACC). We found that lesioning the ACC specifically attenuated the vicarious freezing behavior of foot-shock-experienced observer rats. Furthermore, ablation of projections from the ACC to the mediodorsal thalamus (MDL) bilaterally delayed the vicarious freezing responses, and activation of these projections decreased the vicarious freezing responses. Overall, our results demonstrate that, in rats, the ACC modulates vicarious freezing behavior via a projection to the MDL and provide clues to understanding the mechanisms underlying empathic behavior in humans.
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Affiliation(s)
- Chaowen Zheng
- Institute of Neuroscience, State Key Laboratory of Neuroscience, CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, 200031, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yanwang Huang
- Institute of Neuroscience, State Key Laboratory of Neuroscience, CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, 200031, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Binshi Bo
- Institute of Neuroscience, State Key Laboratory of Neuroscience, CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Lei Wei
- Institute of Neuroscience, State Key Laboratory of Neuroscience, CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Zhifeng Liang
- Institute of Neuroscience, State Key Laboratory of Neuroscience, CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Zuoren Wang
- Institute of Neuroscience, State Key Laboratory of Neuroscience, CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, 200031, China. .,University of Chinese Academy of Sciences, Beijing, 100049, China. .,School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, China.
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9
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Kunimatsu A, Yasaka K, Akai H, Kunimatsu N, Abe O. MRI findings in posttraumatic stress disorder. J Magn Reson Imaging 2019; 52:380-396. [DOI: 10.1002/jmri.26929] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Accepted: 08/27/2019] [Indexed: 12/31/2022] Open
Affiliation(s)
- Akira Kunimatsu
- Department of Radiology, IMSUT Hospital, The Institute of Medical ScienceThe University of Tokyo Tokyo Japan
- Department of RadiologyThe University of Tokyo Hospital Tokyo Japan
| | - Koichiro Yasaka
- Department of Radiology, IMSUT Hospital, The Institute of Medical ScienceThe University of Tokyo Tokyo Japan
- Department of RadiologyThe University of Tokyo Hospital Tokyo Japan
| | - Hiroyuki Akai
- Department of Radiology, IMSUT Hospital, The Institute of Medical ScienceThe University of Tokyo Tokyo Japan
- Department of RadiologyThe University of Tokyo Hospital Tokyo Japan
| | - Natsuko Kunimatsu
- Department of RadiologyInternational University of Health and Welfare, Mita Hospital Tokyo Japan
| | - Osamu Abe
- Department of Radiology, Graduate School of MedicineThe University of Tokyo Tokyo Japan
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10
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Russman Block SR, Weissman DH, Sripada C, Angstadt M, Duval ER, King AP, Liberzon I. Neural Mechanisms of Spatial Attention Deficits in Trauma. BIOLOGICAL PSYCHIATRY: COGNITIVE NEUROSCIENCE AND NEUROIMAGING 2019; 5:991-1001. [PMID: 31377230 DOI: 10.1016/j.bpsc.2019.05.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 05/15/2019] [Accepted: 05/15/2019] [Indexed: 11/18/2022]
Abstract
BACKGROUND Survival requires effective shifting of attention from one stimulus to another as goals change. It has been consistently demonstrated that posttraumatic stress disorder (PTSD) is associated with both faster orienting of attention toward and slower disengagement of attention from affective stimuli. Prior work, however, suggests that attention abnormalities in PTSD may extend beyond the affective domain. METHODS We used the Attention Network Test-modified to include invalid spatial cues-in conjunction with functional magnetic resonance imaging to examine the neurocognitive underpinnings of visuospatial attention in participants with PTSD (n = 31) and control participants who were (n = 20) and were not (n = 21) exposed to trauma. RESULTS We observed deficits in the utilization of spatial information in the group with PTSD. Specifically, compared with the non-trauma-exposed group, participants with PTSD showed a smaller reaction time difference between invalidly and validly cued targets, demonstrating that they were less likely to use spatial cues to inform subsequent behavior. We also found that in both the PTSD and trauma-exposed control groups, utilization of spatial information was positively associated with activation of attentional control regions (e.g., right precentral gyrus, inferior and middle frontal gyri) and negatively associated with activation in salience processing regions (e.g., right insula). CONCLUSIONS This pattern suggests that both trauma exposure and psychopathology may be associated with alterations of spatial attention. Overall, our findings suggest that both attention- and salience-network abnormalities may be related to altered attention in trauma-exposed populations. Treatments that target these neural networks could therefore be a new avenue for PTSD research.
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Affiliation(s)
- Stefanie R Russman Block
- Department of Psychology, University of Michigan, Ann Arbor, Michigan; Department of Psychiatry, University of Michigan Health System, Ann Arbor, Michigan; Department of Psychology, Michigan State University, East Lansing, Michigan.
| | - Daniel H Weissman
- Department of Psychology, University of Michigan, Ann Arbor, Michigan
| | - Chandra Sripada
- Department of Philosophy, University of Michigan, Ann Arbor, Michigan; Department of Psychiatry, University of Michigan Health System, Ann Arbor, Michigan
| | - Mike Angstadt
- Department of Psychiatry, University of Michigan Health System, Ann Arbor, Michigan
| | - Elizabeth R Duval
- Department of Psychiatry, University of Michigan Health System, Ann Arbor, Michigan
| | - Anthony P King
- Department of Psychiatry, University of Michigan Health System, Ann Arbor, Michigan
| | - Israel Liberzon
- Department of Psychology, University of Michigan, Ann Arbor, Michigan; Department of Psychiatry, University of Michigan Health System, Ann Arbor, Michigan; Mental Health Service, Veterans Administration Ann Arbor Healthcare System, Ann Arbor, Michigan; Department of Psychiatry, Texas A&M College of Medicine, College Station, Texas
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11
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Suo X, Lei D, Li W, Chen F, Niu R, Kuang W, Huang X, Lui S, Li L, Sweeney JA, Gong Q. Large-scale white matter network reorganization in posttraumatic stress disorder. Hum Brain Mapp 2019; 40:4801-4812. [PMID: 31365184 DOI: 10.1002/hbm.24738] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2019] [Revised: 06/30/2019] [Accepted: 07/15/2019] [Indexed: 02/05/2023] Open
Abstract
Recently, graph theoretical approaches applied to neuroimaging data have advanced understanding of the human brain connectome and its abnormalities in psychiatric disorders. However, little is known about the topological organization of brain white matter networks in posttraumatic stress disorder (PTSD). Seventy-six patients with PTSD and 76 age, gender, and years of education-matched trauma-exposed controls were studied after the 2008 Sichuan earthquake using diffusion tensor imaging and graph theoretical approaches. Topological properties of brain networks including global and nodal measurements and modularity were analyzed. At the global level, patients showed lower clustering coefficient (p = .016) and normalized characteristic path length (p = .035) compared with controls. At the nodal level, increased nodal centralities in left middle frontal gyrus, superior and inferior temporal gyrus and right inferior occipital gyrus were observed (p < .05, corrected for false-discovery rate). Modularity analysis revealed that PTSD patients had significantly increased inter-modular connections in the fronto-parietal module, fronto-striato-temporal module, and visual and default mode modules. These findings indicate a PTSD-related shift of white matter network topology toward randomization. This pattern was characterized by an increased global network integration, reflected by increased inter-modular connections with increased nodal centralities involving fronto-temporo-occipital regions. This study suggests that extremely stressful life experiences, when they lead to PTSD, are associated with large-scale brain white matter network topological reconfiguration at global, nodal, and modular levels.
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Affiliation(s)
- Xueling Suo
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Du Lei
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, Sichuan, China.,Department of Psychiatry and Behavioral Neuroscience, University of Cincinnati, Cincinnati, Ohio
| | - Wenbin Li
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Fuqin Chen
- Department of Medical Information Engineering, School of Electrical Engineering and Information, Sichuan University, Chengdu, Sichuan, China
| | - Running Niu
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Weihong Kuang
- Department of Psychiatry, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Xiaoqi Huang
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Su Lui
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Lingjiang Li
- Mental Health Institute, the Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - John A Sweeney
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, Sichuan, China.,Department of Psychiatry and Behavioral Neuroscience, University of Cincinnati, Cincinnati, Ohio
| | - Qiyong Gong
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, Sichuan, China.,Psychoradiology Research Unit of Chinese Academy of Medical Sciences (2018RU011), West China Hospital of Sichuan University, Chengdu, Sichuan, China
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12
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Fu S, Ma X, Li C, Wang T, Li C, Bai Z, Hua K, Yin Y, Wu Y, Yu K, Liu M, Ke Q, Tian J, Jiang G. Aberrant regional homogeneity in post-traumatic stress disorder after traffic accident: A resting-state functional MRI study. Neuroimage Clin 2019; 24:101951. [PMID: 31374398 PMCID: PMC6676011 DOI: 10.1016/j.nicl.2019.101951] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 06/23/2019] [Accepted: 07/19/2019] [Indexed: 10/31/2022]
Abstract
OBJECTIVES The present study explored the changes in spontaneous regional activity in post-traumatic stress disorder (PTSD) patients, who experienced severe traffic accidents. METHODS 20 drug-naive PTSD patients and 18 healthy control subjects were imaged using resting-state functional magnetic resonance imaging (rs-fMRI) and analyzed by the algorithm of regional homogeneity (ReHo). RESULTS Compared to the healthy control group, the PTSD group showed decreased ReHo values in the right angular gyrus. In addition, a negative correlation was found between the activity level of the angular gyrus and the CAPS score. CONCLUSION The dysfunctions were found in the memory- and emotion-related areas, suggested a possible mechanism of memory dysregulation that might be related to the intrusive memory symptoms of PTSD. These results provided imaging evidence that might provide an in-depth understanding of the intrinsic functional architecture of PTSD.
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Affiliation(s)
- Shishun Fu
- The Second School of Clinical Medicine, Southern Medical University, People's Republic of China
| | - Xiaofen Ma
- The Department of Medical Imaging Guangdong Second Provincial General Hospital, Southern Medical University, People's Republic of China
| | - Changhong Li
- The Department of Medical Imaging Guangdong Second Provincial General Hospital, Southern Medical University, People's Republic of China
| | - Tianyue Wang
- The Department of Medical Imaging Guangdong Second Provincial General Hospital, Southern Medical University, People's Republic of China
| | - Chao Li
- The First Affiliated Hospital of China Medical University, People's Republic of China
| | - Zhigang Bai
- The Affiliated Hospital of Inner Mongolia Medical University, People's Republic of China
| | - Kelei Hua
- The Second School of Clinical Medicine, Southern Medical University, People's Republic of China; The Department of Medical Imaging Guangdong Second Provincial General Hospital, Southern Medical University, People's Republic of China
| | - Yi Yin
- The Second School of Clinical Medicine, Southern Medical University, People's Republic of China; The Department of Medical Imaging Guangdong Second Provincial General Hospital, Southern Medical University, People's Republic of China
| | - Yunfan Wu
- The Second School of Clinical Medicine, Southern Medical University, People's Republic of China; The Department of Medical Imaging Guangdong Second Provincial General Hospital, Southern Medical University, People's Republic of China
| | - Kanghui Yu
- The Second School of Clinical Medicine, Southern Medical University, People's Republic of China; The Department of Medical Imaging Guangdong Second Provincial General Hospital, Southern Medical University, People's Republic of China
| | - Mengchen Liu
- The Second School of Clinical Medicine, Southern Medical University, People's Republic of China
| | - Qiying Ke
- The Second School of Clinical Medicine, Southern Medical University, People's Republic of China
| | - Junzhang Tian
- The Second School of Clinical Medicine, Southern Medical University, People's Republic of China; The Department of Medical Imaging Guangdong Second Provincial General Hospital, Southern Medical University, People's Republic of China.
| | - Guihua Jiang
- The Second School of Clinical Medicine, Southern Medical University, People's Republic of China; The Department of Medical Imaging Guangdong Second Provincial General Hospital, Southern Medical University, People's Republic of China.
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13
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Al Zoubi O, Mayeli A, Tsuchiyagaito A, Misaki M, Zotev V, Refai H, Paulus M, Bodurka J. EEG Microstates Temporal Dynamics Differentiate Individuals with Mood and Anxiety Disorders From Healthy Subjects. Front Hum Neurosci 2019; 13:56. [PMID: 30863294 PMCID: PMC6399140 DOI: 10.3389/fnhum.2019.00056] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Accepted: 01/31/2019] [Indexed: 01/15/2023] Open
Abstract
Electroencephalography (EEG) measures the brain’s electrophysiological spatio-temporal activities with high temporal resolution. Multichannel and broadband analysis of EEG signals is referred to as EEG microstates (EEG-ms) and can characterize such dynamic neuronal activity. EEG-ms have gained much attention due to the increasing evidence of their association with mental activities and large-scale brain networks identified by functional magnetic resonance imaging (fMRI). Spatially independent EEG-ms are quasi-stationary topographies (e.g., stable, lasting a few dozen milliseconds) typically classified into four canonical classes (microstates A through D). They can be identified by clustering EEG signals around EEG global field power (GFP) maxima points. We examined the EEG-ms properties and the dynamics of cohorts of mood and anxiety (MA) disorders subjects (n = 61) and healthy controls (HCs; n = 52). In both groups, we found four distinct classes of EEG-ms (A through D), which did not differ among cohorts. This suggests a lack of significant structural cortical abnormalities among cohorts, which would otherwise affect the EEG-ms topographies. However, both cohorts’ brain network dynamics significantly varied, as reflected in EEG-ms properties. Compared to HC, the MA cohort features a lower transition probability between EEG-ms B and D and higher transition probability from A to D and from B to C, with a trend towards significance in the average duration of microstate C. Furthermore, we harnessed a recently introduced theoretical approach to analyze the temporal dependencies in EEG-ms. The results revealed that the transition matrices of MA group exhibit higher symmetrical and stationarity properties as compared to HC ones. In addition, we found an elevation in the temporal dependencies among microstates, especially in microstate B for the MA group. The determined alteration in EEG-ms temporal dependencies among the cohorts suggests that brain abnormalities in mood and anxiety disorders reflect aberrant neural dynamics and a temporal dwelling among ceratin brain states (i.e., mood and anxiety disorders subjects have a less dynamicity in switching between different brain states).
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Affiliation(s)
- Obada Al Zoubi
- Laureate Institute for Brain Research, Tulsa, OK, United States.,Department of Electrical and Computer Engineering, University of Oklahoma, Tulsa, OK, United States
| | - Ahmad Mayeli
- Laureate Institute for Brain Research, Tulsa, OK, United States.,Department of Electrical and Computer Engineering, University of Oklahoma, Tulsa, OK, United States
| | - Aki Tsuchiyagaito
- Laureate Institute for Brain Research, Tulsa, OK, United States.,Japan Society for the Promotion Science, Tokyo, Japan.,Research Center for Child Development, Chiba University, Chiba, Japan
| | - Masaya Misaki
- Laureate Institute for Brain Research, Tulsa, OK, United States
| | - Vadim Zotev
- Laureate Institute for Brain Research, Tulsa, OK, United States
| | - Hazem Refai
- Department of Electrical and Computer Engineering, University of Oklahoma, Tulsa, OK, United States
| | - Martin Paulus
- Laureate Institute for Brain Research, Tulsa, OK, United States
| | - Jerzy Bodurka
- Laureate Institute for Brain Research, Tulsa, OK, United States.,Oxley College of Health Sciences, University of Tulsa, Tulsa, OK, United States
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14
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Zhao X, Rangaprakash D, Yuan B, Denney TS, Katz JS, Dretsch MN, Deshpande G. Investigating the Correspondence of Clinical Diagnostic Grouping With Underlying Neurobiological and Phenotypic Clusters Using Unsupervised Machine Learning. FRONTIERS IN APPLIED MATHEMATICS AND STATISTICS 2018; 4:25. [PMID: 30393630 PMCID: PMC6214192 DOI: 10.3389/fams.2018.00025] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Many brain-based disorders are traditionally diagnosed based on clinical interviews and behavioral assessments, which are recognized to be largely imperfect. Therefore, it is necessary to establish neuroimaging-based biomarkers to improve diagnostic precision. Resting-state functional magnetic resonance imaging (rs-fMRI) is a promising technique for the characterization and classification of varying disorders. However, most of these classification methods are supervised, i.e., they require a priori clinical labels to guide classification. In this study, we adopted various unsupervised clustering methods using static and dynamic rs-fMRI connectivity measures to investigate whether the clinical diagnostic grouping of different disorders is grounded in underlying neurobiological and phenotypic clusters. In order to do so, we derived a general analysis pipeline for identifying different brain-based disorders using genetic algorithm-based feature selection, and unsupervised clustering methods on four different datasets; three of them-ADNI, ADHD-200, and ABIDE-which are publicly available, and a fourth one-PTSD and PCS-which was acquired in-house. Using these datasets, the effectiveness of the proposed pipeline was verified on different disorders: Attention Deficit Hyperactivity Disorder (ADHD), Alzheimer's Disease (AD), Autism Spectrum Disorder (ASD), Post-Traumatic Stress Disorder (PTSD), and Post-Concussion Syndrome (PCS). For ADHD and AD, highest similarity was achieved between connectivity and phenotypic clusters, whereas for ASD and PTSD/PCS, highest similarity was achieved between connectivity and clinical diagnostic clusters. For multi-site data (ABIDE and ADHD-200), we report site-specific results. We also reported the effect of elimination of outlier subjects for all four datasets. Overall, our results suggest that neurobiological and phenotypic biomarkers could potentially be used as an aid by the clinician, in additional to currently available clinical diagnostic standards, to improve diagnostic precision. Data and source code used in this work is publicly available at https://github.com/xinyuzhao/identification-of-brain-based-disorders.git.
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Affiliation(s)
- Xinyu Zhao
- Department of Electrical and Computer Engineering, AU MRI Research Center, Auburn University, Auburn, AL, United States
- Quora, Inc., Mountain View, CA, United States
| | - D. Rangaprakash
- Department of Electrical and Computer Engineering, AU MRI Research Center, Auburn University, Auburn, AL, United States
- Department of Psychiatry and Biobehavioral Sciences, University of California, Los Angeles, Los Angeles, CA, United States
| | - Bowen Yuan
- Department of Electrical and Computer Engineering, AU MRI Research Center, Auburn University, Auburn, AL, United States
| | - Thomas S. Denney
- Department of Electrical and Computer Engineering, AU MRI Research Center, Auburn University, Auburn, AL, United States
- Department of Psychology, Auburn University, Auburn, AL, United States
- Alabama Advanced Imaging Consortium, Auburn University, University of Alabama at Birmingham, Birmingham, AL, United States
- Center for Neuroscience, Auburn University, Auburn, AL, United States
| | - Jeffrey S. Katz
- Department of Electrical and Computer Engineering, AU MRI Research Center, Auburn University, Auburn, AL, United States
- Department of Psychology, Auburn University, Auburn, AL, United States
- Alabama Advanced Imaging Consortium, Auburn University, University of Alabama at Birmingham, Birmingham, AL, United States
- Center for Neuroscience, Auburn University, Auburn, AL, United States
| | - Michael N. Dretsch
- Human Dimension Division, HQ TRADOC, Fort Eustis, VA, United States
- U.S. Army Aeromedical Research Laboratory, Fort Rucker, AL, United States
| | - Gopikrishna Deshpande
- Department of Electrical and Computer Engineering, AU MRI Research Center, Auburn University, Auburn, AL, United States
- Department of Psychology, Auburn University, Auburn, AL, United States
- Alabama Advanced Imaging Consortium, Auburn University, University of Alabama at Birmingham, Birmingham, AL, United States
- Center for Neuroscience, Auburn University, Auburn, AL, United States
- Center for Health Ecology and Equity Research, Auburn University, Auburn, AL, United States
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15
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Post-traumatic stress influences local and remote functional connectivity: a resting-state functional magnetic resonance imaging study. Brain Imaging Behav 2018; 11:1316-1325. [PMID: 27722829 DOI: 10.1007/s11682-016-9622-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Post-traumatic stress disorder (PTSD) is associated with alterations in regional brain activation and remote functional connectivity (FC) in limbic and prefrontal cortex. However, little is known about local FC changes following a traumatic event. Resting-state functional magnetic resonance images were collected for typhoon survivors with (n = 27) and without PTSD (n = 33), and healthy controls (n = 30). Local FC was examined by calculating regional homogeneity (ReHo), and remote FC was investigated between regions showing significant ReHo group differences. The PTSD group showed ReHo changes in multiple regions, including the amygdala, parahippocampal gyrus, and prefrontal cortex relative to both control groups. Compared with healthy controls, typhoon survivors had increased ReHo in the insula/inferior frontal gyrus, middle and dorsal anterior cingulate cortex (MCC/dACC), as well as enhanced negative FC between the MCC/dACC and posterior cingulate cortex (PCC)/precuneus. The typhoon-exposed control group exhibited higher ReHo in the PCC/precuneus than the PTSD and healthy control groups. Furthermore, positive correlations were found between PTSD symptom severity and ReHo in several regions. Post-traumatic stress can influence local and remote FC, irrespective of PTSD diagnosis. Future studies are needed to validate the findings and to determine whether the alterations represent pre-existing or acquired deficits.
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16
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Han C, Park M, Lee JY, Jung HY, Park SM, Choi JS. Dysfunctional information processing in individuals with acute exposure to sexual abuse: An ERP study. Medicine (Baltimore) 2018; 97:e10880. [PMID: 29851807 PMCID: PMC6392618 DOI: 10.1097/md.0000000000010880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Acute stress disorder (ASD) and posttraumatic stress disorder (PTSD) may occur after traumatic event and also cause significant life time impairment. P300 event-related potential (ERP) is a potential biological marker for PTSD and can reflect cognitive impairment in information processing and attention. Despite the usefulness of ERP, there are few attempts to reveal relationships between ASD and P300. In the present study, we aimed to determine if the P300 of the patients who were the victims of sexual abuse reflected the quantitative trait of ASD or if P300 is applicable as a state marker for predicting the risk of PTSD.Fifteen female victims of sexual abuse diagnosed with ASD and 18 healthy controls (HCs) without trauma exposure participated in this study. We investigated the P300 ERPs in patients with ASD to compare them with those of HCs. ERPs were acquired from female adults during an auditory oddball task. Between-group differences in amplitudes or latencies of P300 were investigated using repeated-measures analysis of variance.The ASD groups showed reduced P300 amplitudes at the midline centroparietal site as well as reduced accuracy rates during an auditory oddball task compared with the HCs.These results indicate that ASD have abnormalities in the P300 compared to those in HCs. Moreover, the reduction in P300 could be considered a candidate neurophysiological marker for ASD.
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Affiliation(s)
- Changwoo Han
- Department of Psychiatry, Eulji University Gangnam Eulji Hospital, Seoul
- Department of Addiction Rehabilitation Social Welfare, Eulji University, Kyunggi
| | - Minkyung Park
- Department of Psychiatry, SMG-SNU Boramae Medical Center
| | - Jun-Young Lee
- Department of Psychiatry, SMG-SNU Boramae Medical Center
- Department of Psychiatry and Behavioral Science
| | - Hee Yeon Jung
- Department of Psychiatry, SMG-SNU Boramae Medical Center
- Department of Psychiatry and Behavioral Science
- Department of Clinical Medical Sciences, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Su Mi Park
- Department of Psychiatry, SMG-SNU Boramae Medical Center
- Department of Clinical Medical Sciences, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Jung-Seok Choi
- Department of Psychiatry, SMG-SNU Boramae Medical Center
- Department of Psychiatry and Behavioral Science
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17
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Disner SG, Marquardt CA, Mueller BA, Burton PC, Sponheim SR. Spontaneous neural activity differences in posttraumatic stress disorder: A quantitative resting-state meta-analysis and fMRI validation. Hum Brain Mapp 2018; 39:837-850. [PMID: 29143411 PMCID: PMC6866285 DOI: 10.1002/hbm.23886] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 10/11/2017] [Accepted: 11/06/2017] [Indexed: 02/05/2023] Open
Abstract
Identifying the pathophysiology of posttraumatic stress disorder (PTSD) is a critical step toward reducing its debilitating impact. Spontaneous neural activity, measured at rest using various neuroimaging techniques (e.g., regional homogeneity [ReHo], amplitude of low frequency fluctuations [ALFF]), can provide insight about baseline neurobiological factors influencing sensory, cognitive, or behavioral processes associated with PTSD. The present study used activation likelihood estimation (ALE) to conduct the largest-to-date quantitative meta-analysis of spontaneous neural activity in PTSD, including 457 PTSD cases, 292 trauma-exposed controls (TECs), and 293 non-traumatized controls (NTCs) across 22 published studies. Five regions-of-interest (ROIs) were identified where activity differed between PTSD cases and controls: one when compared to all controls (left globus pallidus), two when compared to TECs (left inferior parietal lobule [IPL] and right lingual gyrus), and two when compared to NTCs (left amygdala and right caudate head). To corroborate these results, a second analysis was conducted using resting-state functional magnetic resonance imaging on an independent sample of 205 previously-deployed US military veterans. In this analysis, converging evidence from ReHo and ALFF showed that spontaneous neural activity in the left IPL alone was positively correlated with PTSD symptom severity. This result is consistent with theoretical accounts that link left IPL activity with PTSD-relevant processes such as processing of emotional stimuli (e.g., fearful faces) and the extent that attention is captured by salient autobiographical memories. By modeling the neurobiological correlates of PTSD, we can increase our understanding of this debilitating disorder and guide the development of future clinical innovations.
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Affiliation(s)
- Seth G. Disner
- Minneapolis Veterans Affairs Health Care System, Minneapolis, Minnesota
| | - Craig A. Marquardt
- Minneapolis Veterans Affairs Health Care System, Minneapolis, Minnesota
- University of Minnesota, Minneapolis, Minnesota
| | | | | | - Scott R. Sponheim
- Minneapolis Veterans Affairs Health Care System, Minneapolis, Minnesota
- University of Minnesota, Minneapolis, Minnesota
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18
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Jin C, Jia H, Lanka P, Rangaprakash D, Li L, Liu T, Hu X, Deshpande G. Dynamic brain connectivity is a better predictor of PTSD than static connectivity. Hum Brain Mapp 2017; 38:4479-4496. [PMID: 28603919 PMCID: PMC6866943 DOI: 10.1002/hbm.23676] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Accepted: 05/23/2017] [Indexed: 12/24/2022] Open
Abstract
Using resting-state functional magnetic resonance imaging, we test the hypothesis that subjects with post-traumatic stress disorder (PTSD) are characterized by reduced temporal variability of brain connectivity compared to matched healthy controls. Specifically, we test whether PTSD is characterized by elevated static connectivity, coupled with decreased temporal variability of those connections, with the latter providing greater sensitivity toward the pathology than the former. Static functional connectivity (FC; nondirectional zero-lag correlation) and static effective connectivity (EC; directional time-lagged relationships) were obtained over the entire brain using conventional models. Dynamic FC and dynamic EC were estimated by letting the conventional models to vary as a function of time. Statistical separation and discriminability of these metrics between the groups and their ability to accurately predict the diagnostic label of a novel subject were ascertained using separate support vector machine classifiers. Our findings support our hypothesis that PTSD subjects have stronger static connectivity, but reduced temporal variability of connectivity. Further, machine learning classification accuracy obtained with dynamic FC and dynamic EC was significantly higher than that obtained with static FC and static EC, respectively. Furthermore, results also indicate that the ease with which brain regions engage or disengage with other regions may be more sensitive to underlying pathology than the strength with which they are engaged. Future studies must examine whether this is true only in the case of PTSD or is a general organizing principle in the human brain. Hum Brain Mapp 38:4479-4496, 2017. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Changfeng Jin
- The Mental Health Institute, The Second Xiangya Hospital, Central South UniversityChangshaChina
| | - Hao Jia
- AU MRI Research Center, Department of Electrical and Computer EngineeringAuburn UniversityAuburnAlabama
- Department of Automation, College of Information EngineeringTaiyuan University of TechnologyTaiyuanShanxiChina
| | - Pradyumna Lanka
- AU MRI Research Center, Department of Electrical and Computer EngineeringAuburn UniversityAuburnAlabama
| | - D Rangaprakash
- AU MRI Research Center, Department of Electrical and Computer EngineeringAuburn UniversityAuburnAlabama
- Department of Psychiatry and Biobehavioral SciencesUniversity of California Los AngelesLos AngelesCalifornia
| | - Lingjiang Li
- The Mental Health Institute, The Second Xiangya Hospital, Central South UniversityChangshaChina
| | - Tianming Liu
- Cortical Architecture Imaging and Discovery Lab, Department of Computer Science and Bioimaging Research CenterUniversity of GeorgiaAthensGeorgia
| | - Xiaoping Hu
- Center for Advanced Neuroimaging, Department of BioengineeringUniversity of CaliforniaRiversideCalifornia
| | - Gopikrishna Deshpande
- AU MRI Research Center, Department of Electrical and Computer EngineeringAuburn UniversityAuburnAlabama
- Department of PsychologyAuburn UniversityAuburnAlabama
- Alabama Advanced Imaging Consortium, Auburn University and University of Alabama BirminghamAlabama
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19
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Lu S, Gao W, Wei Z, Wang D, Hu S, Huang M, Xu Y, Li L. Intrinsic brain abnormalities in young healthy adults with childhood trauma: A resting-state functional magnetic resonance imaging study of regional homogeneity and functional connectivity. Aust N Z J Psychiatry 2017; 51:614-623. [PMID: 27694638 DOI: 10.1177/0004867416671415] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
OBJECTIVE Childhood trauma confers great risk for the development of multiple psychiatric disorders; however, the neural basis for this association is still unknown. The present resting-state functional magnetic resonance imaging study aimed to detect the effects of childhood trauma on brain function in a group of young healthy adults. METHODS In total, 24 healthy individuals with childhood trauma and 24 age- and sex-matched adults without childhood trauma were recruited. Each participant underwent resting-state functional magnetic resonance imaging scanning. Intra-regional brain activity was evaluated by regional homogeneity method and compared between groups. Areas with altered regional homogeneity were further selected as seeds in subsequent functional connectivity analysis. Statistical analyses were performed by setting current depression and anxiety as covariates. RESULTS Adults with childhood trauma showed decreased regional homogeneity in bilateral superior temporal gyrus and insula, and the right inferior parietal lobule, as well as increased regional homogeneity in the right cerebellum and left middle temporal gyrus. Regional homogeneity values in the left middle temporal gyrus, right insula and right cerebellum were correlated with childhood trauma severity. In addition, individuals with childhood trauma also exhibited altered default mode network, cerebellum-default mode network and insula-default mode network connectivity when the left middle temporal gyrus, right cerebellum and right insula were selected as seed area, respectively. CONCLUSION The present outcomes suggest that childhood trauma is associated with disturbed intrinsic brain function, especially the default mode network, in adults even without psychiatric diagnoses, which may mediate the relationship between childhood trauma and psychiatric disorders in later life.
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Affiliation(s)
- Shaojia Lu
- 1 Key Laboratory of Mental Disorder's Management of Zhejiang Province and Department of Psychiatry, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Weijia Gao
- 2 Department of Child Psychology, The Children's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Zhaoguo Wei
- 3 Key Laboratory of Psychiatry and Mental Health of Hunan Province and Mental Health Institute, The Second Xiangya Hospital, Central South University, Changsha, China
- 4 Department of Psychiatry, Shenzhen Kangning Hospital, Shenzhen, China
| | - Dandan Wang
- 1 Key Laboratory of Mental Disorder's Management of Zhejiang Province and Department of Psychiatry, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Shaohua Hu
- 1 Key Laboratory of Mental Disorder's Management of Zhejiang Province and Department of Psychiatry, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Manli Huang
- 1 Key Laboratory of Mental Disorder's Management of Zhejiang Province and Department of Psychiatry, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yi Xu
- 1 Key Laboratory of Mental Disorder's Management of Zhejiang Province and Department of Psychiatry, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Lingjiang Li
- 3 Key Laboratory of Psychiatry and Mental Health of Hunan Province and Mental Health Institute, The Second Xiangya Hospital, Central South University, Changsha, China
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20
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Li H, Lin Y, Chen J, Wang X, Wu Q, Li Q, Chen Z. Abnormal regional homogeneity and functional connectivity in adjustment disorder of new recruits: a resting-state fMRI study. Jpn J Radiol 2017; 35:151-160. [DOI: 10.1007/s11604-017-0614-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Accepted: 01/06/2017] [Indexed: 11/30/2022]
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21
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Behavioral and neural correlates of disrupted orienting attention in posttraumatic stress disorder. COGNITIVE AFFECTIVE & BEHAVIORAL NEUROSCIENCE 2016; 17:422-436. [DOI: 10.3758/s13415-016-0488-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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22
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Shen C, Wang J, Ma G, Zhu Q, He H, Ding Q, Fan H, Lu Y, Wang W. Waking-hour cerebral activations in nightmare disorder: A resting-state functional magnetic resonance imaging study. Psychiatry Clin Neurosci 2016; 70:573-581. [PMID: 27611586 DOI: 10.1111/pcn.12455] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Revised: 08/04/2016] [Accepted: 09/04/2016] [Indexed: 11/29/2022]
Abstract
AIM The purpose of the current study was to explore the cerebral areas involved in nightmare disorder. METHODS Fifteen nightmare disorder patients and 15 healthy volunteers were invited to undergo resting-state functional magnetic resonance imaging and to complete the Nightmare Experience Questionnaire. RESULTS The nightmare disorder patients scored higher on the Physical Effect and Horrible Stimulation scales, had higher values of regional homogeneity in clusters within the left anterior cingulate cortex and right inferior parietal lobule, and lower regional homogeneity values within the left superior and inferior frontal gyri and bilateral middle occipital gyri. Physical Effect was negatively correlated with regional homogeneity values in anterior cingulate cortex and inferior parietal lobule in the nightmare disorder group, and was positively correlated with regional homogeneity value in the inferior frontal gyrus in the healthy control group. CONCLUSION To our best knowledge, this is the first neuroimaging study on nightmare disorder, and we have characterized the cerebral activities underlying altered hyperarousal and emotion regulation in nightmare disorder at resting-state.
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Affiliation(s)
- Chanchan Shen
- Department of Clinical Psychology and Psychiatry, Zhejiang University College of Medicine, Hangzhou, China
| | - Jiawei Wang
- Department of Clinical Psychology and Psychiatry, Zhejiang University College of Medicine, Hangzhou, China
| | - Guorong Ma
- Department of Clinical Psychology and Psychiatry, Zhejiang University College of Medicine, Hangzhou, China
| | - Qisha Zhu
- Department of Clinical Psychology and Psychiatry, Zhejiang University College of Medicine, Hangzhou, China
| | - Hongjian He
- Department of Biomedical Engineering, Zhejiang University, Hangzhou, China
| | - Qiuping Ding
- Department of Biomedical Engineering, Zhejiang University, Hangzhou, China
| | - Hongying Fan
- Department of Clinical Psychology and Psychiatry, Zhejiang University College of Medicine, Hangzhou, China
| | - Yanxia Lu
- Department of Clinical Psychology and Psychiatry, Zhejiang University College of Medicine, Hangzhou, China
| | - Wei Wang
- Department of Clinical Psychology and Psychiatry, Zhejiang University College of Medicine, Hangzhou, China
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23
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Hong C, Efferth T. Systematic Review on Post-Traumatic Stress Disorder Among Survivors of the Wenchuan Earthquake. TRAUMA, VIOLENCE & ABUSE 2016; 17:542-561. [PMID: 26028651 DOI: 10.1177/1524838015585313] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Post-traumatic stress disorder (PTSD) widely occurs among victims or witness of disasters. With flashbacks, hyperarousal, and avoidance being the typical symptoms, PTSD became a focus of psychological research. The earthquake in Wenchuan, China, on May 12, 2008, was without precedent in magnitude and aftermath and caused huge damage, which drew scientists' attention to mental health of the survivors. We conducted a systematic overview by collecting published articles from the PubMed database and classifying them into five points: epidemiology, neuropathology, biochemistry, genetics and epigenetics, and treatment. The large body of research during the past 6 years showed that adolescents and adults were among the most studied populations with high prevalence rates for PTSD. Genomic and transcriptomic studies focusing on gene × environment studies as well as epigenetics are still rare, although a few available data showed great potential to better understand the pathophysiology of PTSD as multifactorial disease. Phytotherapy with Chinese herbs and acupuncture are rarely reported as of yet, although the first published data indicated promising therapy effects. Future studies should focus on the following points: (1) The affected populations under observation should be better defined concerning individual risk factor, time of observation, spatial movement, and individual disease courses of patients. (2) The role of social support for prevalence rates of PTSD should be observed in more detail. (3) Efficacy and safety of Chinese medicine should be studied to find potential interventions and effective treatments of PTSD.
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Affiliation(s)
- Chunlan Hong
- Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, Johannes Gutenberg University, Mainz, Germany
| | - Thomas Efferth
- Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, Johannes Gutenberg University, Mainz, Germany
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24
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Zhang Q, Wu Q, Zhu H, He L, Huang H, Zhang J, Zhang W. Multimodal MRI-Based Classification of Trauma Survivors with and without Post-Traumatic Stress Disorder. Front Neurosci 2016; 10:292. [PMID: 27445664 PMCID: PMC4919361 DOI: 10.3389/fnins.2016.00292] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Accepted: 06/10/2016] [Indexed: 02/05/2023] Open
Abstract
Post-traumatic stress disorder (PTSD) is a debilitating psychiatric disorder. It can be difficult to discern the symptoms of PTSD and obtain an accurate diagnosis. Different magnetic resonance imaging (MRI) modalities focus on different aspects, which may provide complementary information for PTSD discrimination. However, none of the published studies assessed the diagnostic potential of multimodal MRI in identifying individuals with and without PTSD. In the current study, we investigated whether the complementary information conveyed by multimodal MRI scans could be combined to improve PTSD classification performance. Structural and resting-state functional MRI (rs-fMRI) scans were conducted on 17 PTSD patients, 20 trauma-exposed controls without PTSD (TEC) and 20 non-traumatized healthy controls (HC). Gray matter volume (GMV), amplitude of low-frequency fluctuations (ALFF), and regional homogeneity were extracted as classification features, and in order to integrate the information of structural and functional MRI data, the extracted features were combined by a multi-kernel combination strategy. Then a support vector machine (SVM) classifier was trained to distinguish the subjects at individual level. The performance of the classifier was evaluated using the leave-one-out cross-validation (LOOCV) method. In the pairwise comparison of PTSD, TEC, and HC groups, classification accuracies obtained by the proposed approach were 2.70, 2.50, and 2.71% higher than the best single feature way, with the accuracies of 89.19, 90.00, and 67.57% for PTSD vs. HC, TEC vs. HC, and PTSD vs. TEC respectively. The proposed approach could improve PTSD identification at individual level. Additionally, it provides preliminary support to develop the multimodal MRI method as a clinical diagnostic aid.
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Affiliation(s)
- Qiongmin Zhang
- Department of Medical Information Engineering, School of Electrical Engineering and Information, Sichuan University Chengdu, China
| | - Qizhu Wu
- Monash Medical Imaging, Monash University Clayton, VIC, Australia
| | - Hongru Zhu
- Mental Health Center, West China Hospital of Sichuan University Chengdu, China
| | - Ling He
- Department of Medical Information Engineering, School of Electrical Engineering and Information, Sichuan University Chengdu, China
| | - Hua Huang
- Department of Medical Information Engineering, School of Electrical Engineering and Information, Sichuan University Chengdu, China
| | - Junran Zhang
- Department of Medical Information Engineering, School of Electrical Engineering and Information, Sichuan University Chengdu, China
| | - Wei Zhang
- Mental Health Center, West China Hospital of Sichuan University Chengdu, China
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25
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Wang T, Liu J, Zhang J, Zhan W, Li L, Wu M, Huang H, Zhu H, Kemp GJ, Gong Q. Altered resting-state functional activity in posttraumatic stress disorder: A quantitative meta-analysis. Sci Rep 2016; 6:27131. [PMID: 27251865 PMCID: PMC4890007 DOI: 10.1038/srep27131] [Citation(s) in RCA: 83] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Accepted: 05/13/2016] [Indexed: 02/05/2023] Open
Abstract
Many functional neuroimaging studies have reported differential patterns of spontaneous brain activity in posttraumatic stress disorder (PTSD), but the findings are inconsistent and have not so far been quantitatively reviewed. The present study set out to determine consistent, specific regional brain activity alterations in PTSD, using the Effect Size Signed Differential Mapping technique to conduct a quantitative meta-analysis of resting-state functional neuroimaging studies of PTSD that used either a non-trauma (NTC) or a trauma-exposed (TEC) comparison control group. Fifteen functional neuroimaging studies were included, comparing 286 PTSDs, 203 TECs and 155 NTCs. Compared with NTC, PTSD patients showed hyperactivity in the right anterior insula and bilateral cerebellum, and hypoactivity in the dorsal medial prefrontal cortex (mPFC); compared with TEC, PTSD showed hyperactivity in the ventral mPFC. The pooled meta-analysis showed hypoactivity in the posterior insula, superior temporal, and Heschl’s gyrus in PTSD. Additionally, subgroup meta-analysis (non-medicated subjects vs. NTC) identified abnormal activation in the prefrontal-limbic system. In meta-regression analyses, mean illness duration was positively associated with activity in the right cerebellum (PTSD vs. NTC), and illness severity was negatively associated with activity in the right lingual gyrus (PTSD vs. TEC).
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Affiliation(s)
- Ting Wang
- Department of Medical Information Engineering, School of Electrical Engineering and Information, Sichuan University, Chengdu, P. R. China.,Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, P. R. China
| | - Jia Liu
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, P. R. China
| | - Junran Zhang
- Department of Medical Information Engineering, School of Electrical Engineering and Information, Sichuan University, Chengdu, P. R. China.,Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, P. R. China
| | - Wang Zhan
- Neuroimaging Center, University of Maryland, College Park, Maryland, USA
| | - Lei Li
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, P. R. China
| | - Min Wu
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, P. R. China
| | - Hua Huang
- Department of Medical Information Engineering, School of Electrical Engineering and Information, Sichuan University, Chengdu, P. R. China
| | - Hongyan Zhu
- Laboratory of Stem Cell Biology, State Key Laboratory of Biotherapy, West China Hospital of Sichuan University, Chengdu, P. R. China
| | - Graham J Kemp
- Magnetic Resonance and Image Analysis Research Centre (MARIARC) and Institute of Ageing and Chronic Disease, University of Liverpool, United Kingdom
| | - Qiyong Gong
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, P. R. China.,Department of Psychology, School of Public Administration, Sichuan University, Chengdu, P. R. China
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26
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Liu Y, Li B, Feng N, Pu H, Zhang X, Lu H, Yin H. Perfusion Deficits and Functional Connectivity Alterations in Memory-Related Regions of Patients with Post-Traumatic Stress Disorder. PLoS One 2016; 11:e0156016. [PMID: 27213610 PMCID: PMC4877105 DOI: 10.1371/journal.pone.0156016] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Accepted: 05/09/2016] [Indexed: 11/18/2022] Open
Abstract
To explore the potential alterations in cerebral blood flow (CBF) and functional connectivity of recent onset post-traumatic stress disorder (PTSD) induced by a single prolonged trauma exposure, we recruited 20 survivors experiencing the same coal mining flood disaster as the PTSD (n = 10) and non-PTSD (n = 10) group, respectively. The pulsed arterial spin labeling (ASL) images were acquired with a 3.0T MRI scanner and the partial volume (PV) effect in the images was corrected for better CBF estimation. Alterations in CBF were analyzed using both uncorrected and PV-corrected CBF maps. By using altered CBF regions as regions-of-interest, seed-based functional connectivity analysis was then performed. While only one CBF deficit in right corpus callosum of PTSD patients was detected using uncorrected CBF, three more regions (bilateral frontal lobes and right superior frontal gyrus) were identified using PV-corrected CBF. Furthermore, the regional CBF of right superior frontal gyrus exhibited significantly negative correlation with the symptom severity (r = -0.759, p = 0.018). The resting-state functional connectivity analysis revealed increased connectivity between left frontal lobe and right parietal lobe. The results indicated the symptom-specific perfusion deficits and an aberrant connectivity in memory-related regions of PTSD patients when using PV-corrected ASL data. It also suggested that PV-corrected CBF exhibits more subtle changes that may be beneficial to perfusion and connectivity analysis.
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Affiliation(s)
- Yang Liu
- School of Biomedical Engineering, Fourth Military Medical University, Xi’an, Shaanxi, China
| | - Baojuan Li
- School of Biomedical Engineering, Fourth Military Medical University, Xi’an, Shaanxi, China
| | - Na Feng
- Department of Physiology, Fourth Military Medical University, Xi’an, Shaanxi, China
| | - Huangsheng Pu
- School of Biomedical Engineering, Fourth Military Medical University, Xi’an, Shaanxi, China
| | - Xi Zhang
- School of Biomedical Engineering, Fourth Military Medical University, Xi’an, Shaanxi, China
| | - Hongbing Lu
- School of Biomedical Engineering, Fourth Military Medical University, Xi’an, Shaanxi, China
| | - Hong Yin
- Department of Radiology, Xijing Hospital, Xi’an, Shaanxi, China
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27
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Early-life stress exposure associated with altered prefrontal resting-state fMRI connectivity in young children. Dev Cogn Neurosci 2016; 19:107-14. [PMID: 27010576 PMCID: PMC4912914 DOI: 10.1016/j.dcn.2016.02.003] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2015] [Revised: 02/09/2016] [Accepted: 02/09/2016] [Indexed: 11/21/2022] Open
Abstract
Relations between early stress exposure (ELS) and brain in childhood are unexamined. We examine the association of ELS to resting-state fMRI in young children. Higher ELS relates to greater ReHo of resting-state fMRI in left prefrontal cortex. ReHo in left prefrontal cortex negatively relates to children's cognitive control. Coupling of left prefrontal with right temporal cortex negatively relates to control. ELS effects are independent of other stress indicators, such as violence exposure. Better understanding of ELS effects on child brain might inspire targeted preventions.
Early-life stress (ELS) exposure is associated with adverse outcomes across the lifespan. We examined the relation of ELS exposure to resting-state fMRI in children ages 4–7 years. ELS in the first years of life, but not concurrent, was associated with higher regional homogeneity of resting-state fMRI in the left lateral frontal cortex. Resting-state fMRI functional connectivity analyses showed that the region of left lateral frontal cortex demonstrating heightened regional homogeneity associated with ELS was negatively correlated with right temporal/parahippocampal areas. Moreover, higher regional homogeneity in the left lateral frontal cortex and its negative coupling with the right middle temporal/parahippocampal areas were associated with poorer performance on a reversal-learning task performed outside the scanner. Association of ELS exposure with regional homogeneity was independent of other early adversities. These findings suggest that ELS may influence the development of cognitive control in the lateral prefrontal cortex and its interactions with temporal cortex.
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28
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Li L, Lei D, Li L, Huang X, Suo X, Xiao F, Kuang W, Li J, Bi F, Lui S, Kemp GJ, Sweeney JA, Gong Q. White Matter Abnormalities in Post-traumatic Stress Disorder Following a Specific Traumatic Event. EBioMedicine 2016; 4:176-83. [PMID: 26981581 PMCID: PMC4776058 DOI: 10.1016/j.ebiom.2016.01.012] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2015] [Revised: 11/27/2015] [Accepted: 01/11/2016] [Indexed: 02/05/2023] Open
Abstract
Studies of posttraumatic stress disorder (PTSD) are complicated by wide variability in the intensity and duration of prior stressors in patient participants, secondary effects of chronic psychiatric illness, and a variable history of treatment with psychiatric medications. In magnetic resonance imaging (MRI) studies, patient samples have often been small, and they were not often compared to similarly stressed patients without PTSD in order to control for general stress effects. Findings from these studies have been inconsistent. The present study investigated whole-brain microstructural alterations of white matter in a large drug-naive population who survived a specific, severe traumatic event (a major 8.0-magnitude earthquake). Using diffusion tensor imaging (DTI), we explored group differences between 88 PTSD patients and 91 matched traumatized non-PTSD controls in fractional anisotropy (FA), as well as its component elements axial diffusivity (AD) and radial diffusivity (RD), and examined these findings in relation to findings from deterministic DTI tractography. Relations between white matter alterations and psychiatric symptom severity were examined. PTSD patients, relative to similarly stressed controls, showed an FA increase as well as AD and RD changes in the white matter beneath left dorsolateral prefrontal cortex and forceps major. The observation of increased FA in the PTSD group suggests that the pathophysiology of PTSD after a specific acute traumatic event is distinct from what has been reported in patients with several years duration of illness. Alterations in dorsolateral prefrontal cortex may be an important aspect of illness pathophysiology, possibly via the region's established role in fear extinction circuitry. Use-dependent myelination or other secondary compensatory changes in response to heightened demands for threat appraisal and emotion regulation may be involved.
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Affiliation(s)
- Lei Li
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, China
| | - Du Lei
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, China
| | - Lingjiang Li
- Mental Health Institute, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Xiaoqi Huang
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, China
| | - Xueling Suo
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, China
| | - Fenglai Xiao
- Department of Neurology, West China Hospital of Sichuan University, Chengdu, China
- Department of Psychiatry, West China Hospital of Sichuan University, Chengdu, China
- Department of Oncology, State Key Laboratory of Biotherapy, West China Hospital of Sichuan University, Chengdu, China
| | - Weihong Kuang
- Department of Neurology, West China Hospital of Sichuan University, Chengdu, China
- Department of Psychiatry, West China Hospital of Sichuan University, Chengdu, China
- Department of Oncology, State Key Laboratory of Biotherapy, West China Hospital of Sichuan University, Chengdu, China
| | - Jin Li
- Department of Neurology, West China Hospital of Sichuan University, Chengdu, China
- Department of Psychiatry, West China Hospital of Sichuan University, Chengdu, China
- Department of Oncology, State Key Laboratory of Biotherapy, West China Hospital of Sichuan University, Chengdu, China
| | - Feng Bi
- Department of Neurology, West China Hospital of Sichuan University, Chengdu, China
- Department of Psychiatry, West China Hospital of Sichuan University, Chengdu, China
- Department of Oncology, State Key Laboratory of Biotherapy, West China Hospital of Sichuan University, Chengdu, China
| | - Su Lui
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, China
| | - Graham J. Kemp
- Magnetic Resonance and Image Analysis Research Centre and Institute of Ageing and Chronic Disease, University of Liverpool, Liverpool, England, UK
| | - John A. Sweeney
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, China
- University of Texas Southwestern, Dallas, USA
| | - Qiyong Gong
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, China
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29
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Suo X, Lei D, Li K, Chen F, Li F, Li L, Huang X, Lui S, Li L, Kemp GJ, Gong Q. Disrupted brain network topology in pediatric posttraumatic stress disorder: A resting-state fMRI study. Hum Brain Mapp 2015; 36:3677-86. [PMID: 26096541 DOI: 10.1002/hbm.22871] [Citation(s) in RCA: 97] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2014] [Revised: 03/26/2015] [Accepted: 05/27/2015] [Indexed: 02/05/2023] Open
Abstract
Children exposed to natural disasters are vulnerable to the development of posttraumatic stress disorder (PTSD). Recent studies of other neuropsychiatric disorders have used graph-based theoretical analysis to investigate the topological properties of the functional brain connectome. However, little is known about this connectome in pediatric PTSD. Twenty-eight pediatric PTSD patients and 26 trauma-exposed non-PTSD patients were recruited from 4,200 screened subjects after the 2008 Sichuan earthquake to undergo a resting-state functional magnetic resonance imaging scan. Functional connectivity between 90 brain regions from the automated anatomical labeling atlas was established using partial correlation coefficients, and the whole-brain functional connectome was constructed by applying a threshold to the resultant 90 * 90 partial correlation matrix. Graph theory analysis was then used to examine the group-specific topological properties of the two functional connectomes. Both the PTSD and non-PTSD control groups exhibited "small-world" brain network topology. However, the functional connectome of the PTSD group showed a significant increase in the clustering coefficient and a normalized characteristic path length and local efficiency, suggesting a shift toward regular networks. Furthermore, the PTSD connectomes showed both enhanced nodal centralities, mainly in the default mode- and salience-related regions, and reduced nodal centralities, mainly in the central-executive network regions. The clustering coefficient and nodal efficiency of the left superior frontal gyrus were positively correlated with the Clinician-Administered PTSD Scale. These disrupted topological properties of the functional connectome help to clarify the pathogenesis of pediatric PTSD and could be potential biomarkers of brain abnormalities.
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Affiliation(s)
- Xueling Suo
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Du Lei
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Kaiming Li
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Fuqin Chen
- Department of Medical Information Engineering, School of Electrical Engineering and Information, Sichuan University, Chengdu, Sichuan, China
| | - Fei Li
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Lei Li
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Xiaoqi Huang
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Su Lui
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Lingjiang Li
- Mental Health Institute, the Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Graham J Kemp
- Department of Musculoskeletal Biology and MRC-Arthritis Research UK Centre for Integrated Research into Musculoskeletal Ageing (CIMA), Faculty of Health and Life Sciences, Magnetic Resonance and Image Analysis Research Centre (MARIARC) and Institute of Ageing and Chronic Disease, University of Liverpool, Liverpool, United Kingdom
| | - Qiyong Gong
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, Sichuan, China.,Department of Psychology School of Public Administration, Sichuan University, Chengdu, Sichuan, China.,Department of Psychiatry, West China Hospital of Sichuan University, Chengdu, Sichuan, China
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30
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Connectome-Scale Assessments of Functional Connectivity in Children with Primary Monosymptomatic Nocturnal Enuresis. BIOMED RESEARCH INTERNATIONAL 2015; 2015:463708. [PMID: 26180801 PMCID: PMC4477104 DOI: 10.1155/2015/463708] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Revised: 11/10/2014] [Accepted: 12/05/2014] [Indexed: 02/05/2023]
Abstract
Primary monosymptomatic nocturnal enuresis (PMNE) is a common developmental disorder in children. Previous literature has suggested that PMNE not only is a micturition disorder but also is characterized by cerebral structure abnormalities and dysfunction. However, the biological mechanisms underlying the disease are not thoroughly understood. Graph theoretical analysis has provided a unique tool to reveal the intrinsic attributes of the connectivity patterns of a complex network from a global perspective. Resting-state fMRI was performed in 20 children with PMNE and 20 healthy controls. Brain networks were constructed by computing Pearson's correlations for blood oxygenation level-dependent temporal fluctuations among the 2 groups, followed by graph-based network analyses. The functional brain networks in the PMNE patients were characterized by a significantly lower clustering coefficient, global and local efficiency, and higher characteristic path length compared with controls. PMNE patients also showed a reduced nodal efficiency in the bilateral calcarine sulcus, bilateral cuneus, bilateral lingual gyri, and right superior temporal gyrus. Our findings suggest that PMNE includes brain network alterations that may affect global communication and integration.
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31
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Zhong Y, Zhang R, Li K, Qi R, Zhang Z, Huang Q, Lu G. Altered cortical and subcortical local coherence in PTSD: evidence from resting-state fMRI. Acta Radiol 2015; 56:746-53. [PMID: 24973255 DOI: 10.1177/0284185114537927] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2014] [Accepted: 05/09/2014] [Indexed: 01/23/2023]
Abstract
BACKGROUND Post-traumatic stress disorder (PTSD) is often characterized by region-specific brain activation/deactivation and functional abnormalities in corticolimbic circuitry, as elucidated by task-dependent functional neuroimaging. However, little is known about the abnormalities in the local coherence of cortical and subcortical activity occurring during the resting state. PURPOSE To evaluate the functional discrepancy of local coherence between cortical and subcortical regions in PTSD patients using resting-state functional magnetic resonance imaging (fMRI). MATERIAL AND METHODS Resting-state fMRI (RS-fMRI) was performed on 14 outpatients with PTSD, along with 14 age- and sex-matched normal control subjects. Regional homogeneity (ReHo), a measurement of the coherence of spontaneous RS-fMRI signal oscillations within spatially neighboring voxels, was examined. RESULTS Compared with the normal controls, PTSD patients showed increased local coherence in subcortical regions, including amygdala, hippocampus, thalamus, and putamen, and decreased local coherence in cortical regions, including medial prefrontal cortex and dorsolateral prefrontal cortex. Moreover, a correlation analysis of the ReHo measurement versus the severity of the disorder was performed, and highly positive correlation were observed in the right amygdala. CONCLUSION The present study identified a functional discrepancy of local coherence between cortical and subcortical regions in PTSD patients compared with normal controls. The findings revealed that resting-state abnormalities might lead to further improvement of the understanding of the neural substrates of cognitive impairment and symptoms in PTSD.
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Affiliation(s)
- Yuan Zhong
- Department of Medical Imaging, Jinling Hospital, Clinical school of Medical College, Nanjing University, Nanjing, PR China
- School of Psychology, Nanjing Normal University, Nanjing, PR China
| | - Ruiting Zhang
- School of Psychology, Nanjing Normal University, Nanjing, PR China
| | - Kai Li
- Department of Pharmacology, Suzhou University, Suzhou, PR China
| | - Rongfeng Qi
- Department of Medical Imaging, Jinling Hospital, Clinical school of Medical College, Nanjing University, Nanjing, PR China
| | - Zhiqiang Zhang
- Department of Medical Imaging, Jinling Hospital, Clinical school of Medical College, Nanjing University, Nanjing, PR China
| | - Qingling Huang
- Department of Radiology, affiliated Nanjing Brain Hospital, Nanjing Medical University, Nanjing, PR China
| | - Guangming Lu
- Department of Medical Imaging, Jinling Hospital, Clinical school of Medical College, Nanjing University, Nanjing, PR China
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Liu C, Chen Z, Wang T, Tang D, Hitchman G, Sun J, Zhao X, Wang L, Chen A. Predicting stroop effect from spontaneous neuronal activity: a study of regional homogeneity. PLoS One 2015; 10:e0124405. [PMID: 25938442 PMCID: PMC4418763 DOI: 10.1371/journal.pone.0124405] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Accepted: 03/13/2015] [Indexed: 11/18/2022] Open
Abstract
The Stroop effect is one of the most robust and well-studied phenomena in cognitive psychology and cognitive neuroscience. However, little is known about the relationship between intrinsic brain activity and the individual differences of this effect. In the present study, we explored this issue by examining whether resting-state functional magnetic resonance imaging (rs-fMRI) signals could predict individual differences in the Stroop effect of healthy individuals. A partial correlation analysis was calculated to examine the relationship between regional homogeneity (ReHo) and Stroop effect size, while controlling for age, sex, and framewise displacement (FD). The results showed positive correlations in the left inferior frontal gyrus (LIFG), the left insula, the ventral anterior cingulate cortex (vACC), and the medial frontal gyrus (MFG), and negative correlation in the left precentral gyrus (LPG). These results indicate the possible influences of the LIFG, the left insula, and the LPG on the efficiency of cognitive control, and demonstrate that the key nodes of default mode network (DMN) may be important in goal-directed behavior and/or mental effort during cognitive control tasks.
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Affiliation(s)
- Congcong Liu
- Key laboratory of Cognition and Personality of Ministry of Education, Faculty of Psychology, Southwest University, Chongqing, China
| | - Zhencai Chen
- Key laboratory of Cognition and Personality of Ministry of Education, Faculty of Psychology, Southwest University, Chongqing, China
| | - Ting Wang
- Key laboratory of Cognition and Personality of Ministry of Education, Faculty of Psychology, Southwest University, Chongqing, China
- Laboratory of Cognition and Mental Health, Chongqing University of Arts and Sciences, Chongqing, China
| | - Dandan Tang
- Key laboratory of Cognition and Personality of Ministry of Education, Faculty of Psychology, Southwest University, Chongqing, China
| | - Glenn Hitchman
- Key laboratory of Cognition and Personality of Ministry of Education, Faculty of Psychology, Southwest University, Chongqing, China
| | - Jiangzhou Sun
- Key laboratory of Cognition and Personality of Ministry of Education, Faculty of Psychology, Southwest University, Chongqing, China
| | - Xiaoyue Zhao
- Key laboratory of Cognition and Personality of Ministry of Education, Faculty of Psychology, Southwest University, Chongqing, China
| | - Lijun Wang
- Key laboratory of Cognition and Personality of Ministry of Education, Faculty of Psychology, Southwest University, Chongqing, China
| | - Antao Chen
- Key laboratory of Cognition and Personality of Ministry of Education, Faculty of Psychology, Southwest University, Chongqing, China
- * E-mail:
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Lei D, Li K, Li L, Chen F, Huang X, Lui S, Li J, Bi F, Gong Q. Disrupted Functional Brain Connectome in Patients with Posttraumatic Stress Disorder. Radiology 2015; 276:818-27. [PMID: 25848901 DOI: 10.1148/radiol.15141700] [Citation(s) in RCA: 123] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
PURPOSE To use resting-state functional magnetic resonance (MR) imaging and graph theory approaches to systematically investigate the topological organization of the functional connectome of patients with posttraumatic stress disorder (PTSD). MATERIALS AND METHODS This study was approved by the research ethics committee, and all subjects provided informed consent for participation. Seventy-six patients with PTSD caused by an earthquake and 76 control subjects who experienced the same disaster were matched for age, sex, and years of education. The study subjects underwent resting-state functional MR imaging. The whole-brain functional network was then constructed by thresholding partial correlation matrices of 90 brain regions. The topological organization of the constructed network was analyzed by using graph theory approaches. Nonparametric permutation tests were also used for group comparisons of topological metrics. RESULTS Compared with the control subjects, patients with PTSD exhibited abnormalities in global properties, including a significant decrease in path length (P = .0002) and increases in the clustering coefficient (P = .0014), global efficiency (P = .0002), and local efficiency (P = .0004). Locally, the patients with PTSD exhibited increased centrality in nodes that are predominately involved in the default-mode network (DMN) and the salience network (SN), including the posterior cingulate gyrus, the precuneus, the insula, the putamen, the pallidum, and the temporal regions. CONCLUSION These results suggest that individuals with PTSD exhibit a shift toward "small-worldization" (in which the network transforms from a random or regular network to a small-world network) rather than toward randomization; furthermore, the disequilibrium between the DMN and the SN might be associated with the pathophysiology of PTSD.
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Affiliation(s)
- Du Lei
- From Huaxi MR Research Center, the Department of Radiology, West China Hospital of Sichuan University, No. 37 Guo Xue Xiang, Chengdu, Sichuan 610041, China (D.L., K.L., X.H., S.L., Q.G.); Mental Health Institute, the Second Xiangya Hospital of Central South University, Changsha, China (L.L.); Department of Medical Information Engineering, School of Electrical Engineering and Information, Sichuan University, Chengdu, P.R. China (F.C); and Departments of Psychiatry and Oncology, State Key Laboratory of Biotherapy, West China Hospital of Sichuan University, Chengdu, China (J.L., F.B.). Supported by the National Natural Science Foundation (grants 81030027, 81227002, 81220108013, 30830046, and 81171286), National Key Technologies Research and Development Program of China (Program No. 2012BAI01B03), Program for Changjiang Scholars and Innovative Research Team in University of China (grant IRT1272), and China Postdoctoral Science Foundation (grants 2012M521696 and 2013T60856)
| | - Kaiming Li
- From Huaxi MR Research Center, the Department of Radiology, West China Hospital of Sichuan University, No. 37 Guo Xue Xiang, Chengdu, Sichuan 610041, China (D.L., K.L., X.H., S.L., Q.G.); Mental Health Institute, the Second Xiangya Hospital of Central South University, Changsha, China (L.L.); Department of Medical Information Engineering, School of Electrical Engineering and Information, Sichuan University, Chengdu, P.R. China (F.C); and Departments of Psychiatry and Oncology, State Key Laboratory of Biotherapy, West China Hospital of Sichuan University, Chengdu, China (J.L., F.B.). Supported by the National Natural Science Foundation (grants 81030027, 81227002, 81220108013, 30830046, and 81171286), National Key Technologies Research and Development Program of China (Program No. 2012BAI01B03), Program for Changjiang Scholars and Innovative Research Team in University of China (grant IRT1272), and China Postdoctoral Science Foundation (grants 2012M521696 and 2013T60856)
| | - Lingjiang Li
- From Huaxi MR Research Center, the Department of Radiology, West China Hospital of Sichuan University, No. 37 Guo Xue Xiang, Chengdu, Sichuan 610041, China (D.L., K.L., X.H., S.L., Q.G.); Mental Health Institute, the Second Xiangya Hospital of Central South University, Changsha, China (L.L.); Department of Medical Information Engineering, School of Electrical Engineering and Information, Sichuan University, Chengdu, P.R. China (F.C); and Departments of Psychiatry and Oncology, State Key Laboratory of Biotherapy, West China Hospital of Sichuan University, Chengdu, China (J.L., F.B.). Supported by the National Natural Science Foundation (grants 81030027, 81227002, 81220108013, 30830046, and 81171286), National Key Technologies Research and Development Program of China (Program No. 2012BAI01B03), Program for Changjiang Scholars and Innovative Research Team in University of China (grant IRT1272), and China Postdoctoral Science Foundation (grants 2012M521696 and 2013T60856)
| | - Fuqin Chen
- From Huaxi MR Research Center, the Department of Radiology, West China Hospital of Sichuan University, No. 37 Guo Xue Xiang, Chengdu, Sichuan 610041, China (D.L., K.L., X.H., S.L., Q.G.); Mental Health Institute, the Second Xiangya Hospital of Central South University, Changsha, China (L.L.); Department of Medical Information Engineering, School of Electrical Engineering and Information, Sichuan University, Chengdu, P.R. China (F.C); and Departments of Psychiatry and Oncology, State Key Laboratory of Biotherapy, West China Hospital of Sichuan University, Chengdu, China (J.L., F.B.). Supported by the National Natural Science Foundation (grants 81030027, 81227002, 81220108013, 30830046, and 81171286), National Key Technologies Research and Development Program of China (Program No. 2012BAI01B03), Program for Changjiang Scholars and Innovative Research Team in University of China (grant IRT1272), and China Postdoctoral Science Foundation (grants 2012M521696 and 2013T60856)
| | - Xiaoqi Huang
- From Huaxi MR Research Center, the Department of Radiology, West China Hospital of Sichuan University, No. 37 Guo Xue Xiang, Chengdu, Sichuan 610041, China (D.L., K.L., X.H., S.L., Q.G.); Mental Health Institute, the Second Xiangya Hospital of Central South University, Changsha, China (L.L.); Department of Medical Information Engineering, School of Electrical Engineering and Information, Sichuan University, Chengdu, P.R. China (F.C); and Departments of Psychiatry and Oncology, State Key Laboratory of Biotherapy, West China Hospital of Sichuan University, Chengdu, China (J.L., F.B.). Supported by the National Natural Science Foundation (grants 81030027, 81227002, 81220108013, 30830046, and 81171286), National Key Technologies Research and Development Program of China (Program No. 2012BAI01B03), Program for Changjiang Scholars and Innovative Research Team in University of China (grant IRT1272), and China Postdoctoral Science Foundation (grants 2012M521696 and 2013T60856)
| | - Su Lui
- From Huaxi MR Research Center, the Department of Radiology, West China Hospital of Sichuan University, No. 37 Guo Xue Xiang, Chengdu, Sichuan 610041, China (D.L., K.L., X.H., S.L., Q.G.); Mental Health Institute, the Second Xiangya Hospital of Central South University, Changsha, China (L.L.); Department of Medical Information Engineering, School of Electrical Engineering and Information, Sichuan University, Chengdu, P.R. China (F.C); and Departments of Psychiatry and Oncology, State Key Laboratory of Biotherapy, West China Hospital of Sichuan University, Chengdu, China (J.L., F.B.). Supported by the National Natural Science Foundation (grants 81030027, 81227002, 81220108013, 30830046, and 81171286), National Key Technologies Research and Development Program of China (Program No. 2012BAI01B03), Program for Changjiang Scholars and Innovative Research Team in University of China (grant IRT1272), and China Postdoctoral Science Foundation (grants 2012M521696 and 2013T60856)
| | - Jing Li
- From Huaxi MR Research Center, the Department of Radiology, West China Hospital of Sichuan University, No. 37 Guo Xue Xiang, Chengdu, Sichuan 610041, China (D.L., K.L., X.H., S.L., Q.G.); Mental Health Institute, the Second Xiangya Hospital of Central South University, Changsha, China (L.L.); Department of Medical Information Engineering, School of Electrical Engineering and Information, Sichuan University, Chengdu, P.R. China (F.C); and Departments of Psychiatry and Oncology, State Key Laboratory of Biotherapy, West China Hospital of Sichuan University, Chengdu, China (J.L., F.B.). Supported by the National Natural Science Foundation (grants 81030027, 81227002, 81220108013, 30830046, and 81171286), National Key Technologies Research and Development Program of China (Program No. 2012BAI01B03), Program for Changjiang Scholars and Innovative Research Team in University of China (grant IRT1272), and China Postdoctoral Science Foundation (grants 2012M521696 and 2013T60856)
| | - Feng Bi
- From Huaxi MR Research Center, the Department of Radiology, West China Hospital of Sichuan University, No. 37 Guo Xue Xiang, Chengdu, Sichuan 610041, China (D.L., K.L., X.H., S.L., Q.G.); Mental Health Institute, the Second Xiangya Hospital of Central South University, Changsha, China (L.L.); Department of Medical Information Engineering, School of Electrical Engineering and Information, Sichuan University, Chengdu, P.R. China (F.C); and Departments of Psychiatry and Oncology, State Key Laboratory of Biotherapy, West China Hospital of Sichuan University, Chengdu, China (J.L., F.B.). Supported by the National Natural Science Foundation (grants 81030027, 81227002, 81220108013, 30830046, and 81171286), National Key Technologies Research and Development Program of China (Program No. 2012BAI01B03), Program for Changjiang Scholars and Innovative Research Team in University of China (grant IRT1272), and China Postdoctoral Science Foundation (grants 2012M521696 and 2013T60856)
| | - Qiyong Gong
- From Huaxi MR Research Center, the Department of Radiology, West China Hospital of Sichuan University, No. 37 Guo Xue Xiang, Chengdu, Sichuan 610041, China (D.L., K.L., X.H., S.L., Q.G.); Mental Health Institute, the Second Xiangya Hospital of Central South University, Changsha, China (L.L.); Department of Medical Information Engineering, School of Electrical Engineering and Information, Sichuan University, Chengdu, P.R. China (F.C); and Departments of Psychiatry and Oncology, State Key Laboratory of Biotherapy, West China Hospital of Sichuan University, Chengdu, China (J.L., F.B.). Supported by the National Natural Science Foundation (grants 81030027, 81227002, 81220108013, 30830046, and 81171286), National Key Technologies Research and Development Program of China (Program No. 2012BAI01B03), Program for Changjiang Scholars and Innovative Research Team in University of China (grant IRT1272), and China Postdoctoral Science Foundation (grants 2012M521696 and 2013T60856)
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Characterization of post-traumatic stress disorder using resting-state fMRI with a multi-level parametric classification approach. Brain Topogr 2014; 28:221-37. [PMID: 25078561 DOI: 10.1007/s10548-014-0386-2] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Accepted: 07/16/2014] [Indexed: 10/25/2022]
Abstract
Functional neuroimaging studies have found intra-regional activity and inter-regional connectivity alterations in patients with post-traumatic stress disorder (PTSD). However, the results of these studies are based on group-level statistics and therefore it is unclear whether PTSD can be discriminated at single-subject level, for instance using the machine learning approach. Here, we proposed a novel framework to identify PTSD using multi-level measures derived from resting-state functional MRI (fMRI). Specifically, three levels of measures were extracted as classification features: (1) regional amplitude of low-frequency fluctuations (univariate feature), which represents local spontaneous synchronous neural activity; (2) temporal functional connectivity (bivariate feature), which represents the extent of similarity of local activity between two regions, and (3) spatial functional connectivity (multivariate feature), which represents the extent of similarity of temporal correlation maps between two regions. Our method was evaluated on 20 PTSD patients and 20 demographically matched healthy controls. The experimental results showed that the features of each level could successfully discriminate PTSD patients from healthy controls. Furthermore, the combination of multi-level features using multi-kernel learning can further improve the classification performance. Specifically, the classification accuracy obtained by the proposed framework was 92.5 %, which was an increase of at least 5 and 17.5 % from the two-level and single-level feature based methods, respectively. Particularly, the limbic structure and prefrontal cortex provided the most discriminant features for classification, consistent with results reported in previous studies. Together, this study demonstrated for the first time that patients with PTSD can be identified at the individual level using resting-state fMRI data. The promising classification results indicated that this method may provide a complementary approach for improving the clinical diagnosis of PTSD.
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Lee SH, Yoon S, Kim JI, Jin SH, Chung CK. Functional connectivity of resting state EEG and symptom severity in patients with post-traumatic stress disorder. Prog Neuropsychopharmacol Biol Psychiatry 2014; 51:51-7. [PMID: 24447944 DOI: 10.1016/j.pnpbp.2014.01.008] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2013] [Revised: 01/09/2014] [Accepted: 01/10/2014] [Indexed: 10/25/2022]
Abstract
OBJECTIVES Post-traumatic stress disorder (PTSD) is thought to be a brain network disorder. This study aimed to examine the resting-state functional connectivity (FC) in patients with PTSD. METHODS Thirty-three PTSD patients and 30 age- and gender-matched healthy controls were recruited. Symptom severity of the PTSD patients was assessed, and 62-channel EEG was measured. EEGs were recorded during the resting state, with the eyes closed. Three nodal network measures to assess nodal centrality [nodal degree (Dnodal; connection strength), nodal efficiency (Enodal; communication efficiency), and betweenness centrality (BC; connection centrality)] were calculated in the delta, theta, alpha, beta, and gamma bands. RESULTS Dnodal and Enodal of the beta and gamma bands were decreased in PTSD patients compared to healthy controls. These decreased nodal centrality values were observed primarily at the frontocentral electrodes. In addition, Dnodal of the beta and gamma bands was significantly correlated with depressive symptoms and increased arousal symptoms, respectively. Enodal of the beta and gamma bands was significantly correlated with re-experience, increased arousal, and the severity and frequency of general PTSD symptoms. CONCLUSION Compared to controls, patients with PTSD were found to have decreased resting-state FC, and these FC measures were significantly correlated with PTSD symptom severity. Our results suggest that resting-state FC could be a useful biomarker for PTSD.
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Affiliation(s)
- Seung-Hwan Lee
- Department of Psychiatry, Inje University, Ilsan-Paik Hospital, 2240 Daehwa-dong, Ilsanseo-gu, Goyang, Republic of Korea; Clinical Emotion and Cognition Research Laboratory, 2240 Daehwa-dong, Ilsanseo-gu, Goyang, Republic of Korea.
| | - Sunkyung Yoon
- Clinical Emotion and Cognition Research Laboratory, 2240 Daehwa-dong, Ilsanseo-gu, Goyang, Republic of Korea; Department of Psychology, Sogang University, 35 Baekbeom-ro, Mapo-gu, Seoul, Republic of Korea
| | - Jeong-In Kim
- Clinical Emotion and Cognition Research Laboratory, 2240 Daehwa-dong, Ilsanseo-gu, Goyang, Republic of Korea
| | - Seung-Hyun Jin
- Department of Neurosurgery, Seoul National University Hospital, 101 Daehak-ro, Jongno-gu, Seoul, Republic of Korea
| | - Chun Kee Chung
- Department of Neurosurgery, Seoul National University Hospital, 101 Daehak-ro, Jongno-gu, Seoul, Republic of Korea
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Peterson A, Thome J, Frewen P, Lanius RA. Resting-state neuroimaging studies: a new way of identifying differences and similarities among the anxiety disorders? CANADIAN JOURNAL OF PSYCHIATRY. REVUE CANADIENNE DE PSYCHIATRIE 2014; 59:294-300. [PMID: 25007403 PMCID: PMC4079145 DOI: 10.1177/070674371405900602] [Citation(s) in RCA: 109] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2013] [Accepted: 09/01/2013] [Indexed: 12/16/2022]
Abstract
This review examines recent functional neuroimaging research of resting-state regional connectivity between brain regions in anxiety disorders. Studies compiled in the PubMed- National Center for Biotechnology Information database targeting resting-state functional connectivity in anxiety disorders were reviewed. Diagnoses included posttraumatic stress disorder (PTSD), generalized anxiety disorder (GAD), social anxiety disorder (SAD), obsessive-compulsive disorder (OCD), panic disorder (PD), and specific phobia (SP). Alterations to network connectivity were demonstrated in PTSD, GAD, SAD, OCD, and PD in several resting-state investigations. Differences from control subjects were primarily observed in the default mode network within PTSD, SAD, and OCD. Alterations within the salience network were observed primarily in PTSD, GAD, and SAD. Alterations in corticostriatal networks were uniquely observed in OCD. Finally, alterations within somatosensory networks were observed in SAD and PD investigations. Resting-state studies involving SPs as a primary diagnosis (with or without comorbidities) were not generated during the literature search. The emerging use of resting-state paradigms may be an effective method for understanding associations between anxiety disorders. Targeted studies of PD and SPs, meta-analyses of the studies conducted to date, and studies of the impact of specific comorbid presentations, are recommended future research directions.
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Affiliation(s)
- Andrew Peterson
- Student, Rotman Institute of Philosophy, The University of Western Ontario, London, Ontario
| | - Janine Thome
- Student, Department of Psychosomatic and Psychotherapeutic Medicine, Central Institute of Mental Health Mannheim, University of Heidelberg, Heidelberg, Germany
| | - Paul Frewen
- Associate Professor, Departments of Psychology and Psychiatry, The University of Western Ontario, London, Ontario
| | - Ruth A Lanius
- Professor, Department of Psychiatry, The University of Western Ontario, London, Ontario
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Maximo JO, Cadena EJ, Kana RK. The implications of brain connectivity in the neuropsychology of autism. Neuropsychol Rev 2014; 24:16-31. [PMID: 24496901 PMCID: PMC4059500 DOI: 10.1007/s11065-014-9250-0] [Citation(s) in RCA: 157] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Accepted: 01/20/2014] [Indexed: 12/11/2022]
Abstract
Autism is a neurodevelopmental disorder that has been associated with atypical brain functioning. Functional connectivity MRI (fcMRI) studies examining neural networks in autism have seen an exponential rise over the last decade. Such investigations have led to the characterization of autism as a distributed neural systems disorder. Studies have found widespread cortical underconnectivity, local overconnectivity, and mixed results suggesting disrupted brain connectivity as a potential neural signature of autism. In this review, we summarize the findings of previous fcMRI studies in autism with a detailed examination of their methodology, in order to better understand its potential and to delineate the pitfalls. We also address how a multimodal neuroimaging approach (incorporating different measures of brain connectivity) may help characterize the complex neurobiology of autism at a global level. Finally, we also address the potential of neuroimaging-based markers in assisting neuropsychological assessment of autism. The quest for a neural marker for autism is still ongoing, yet new findings suggest that aberrant brain connectivity may be a promising candidate.
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Affiliation(s)
- Jose O. Maximo
- Department of Psychology, University of Alabama at Birmingham
| | - Elyse J. Cadena
- Department of Psychology, University of Alabama at Birmingham
| | - Rajesh K. Kana
- Department of Psychology, University of Alabama at Birmingham
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Quantitative prediction of individual psychopathology in trauma survivors using resting-state FMRI. Neuropsychopharmacology 2014; 39:681-7. [PMID: 24064470 PMCID: PMC3895245 DOI: 10.1038/npp.2013.251] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Revised: 08/12/2013] [Accepted: 08/29/2013] [Indexed: 02/05/2023]
Abstract
Neuroimaging techniques hold the promise that they may one day aid the clinical assessment of individual psychiatric patients. However, the vast majority of studies published so far have been based on average differences between groups. This study employed a multivariate approach to examine the potential of resting-state functional magnetic resonance imaging (MRI) data for making accurate predictions about psychopathology in survivors of the 2008 Sichuan earthquake at an individual level. Resting-state functional MRI data was acquired for 121 survivors of the 2008 Sichuan earthquake each of whom was assessed for symptoms of post-traumatic stress disorder (PTSD) using the 17-item PTSD Checklist (PCL). Using a multivariate analytical method known as relevance vector regression (RVR), we examined the relationship between resting-state functional MRI data and symptom scores. We found that the use of RVR allowed quantitative prediction of clinical scores with statistically significant accuracy (correlation=0.32, P=0.006; mean squared error=176.88, P=0.001). Accurate prediction was based on functional activation in a number of prefrontal, parietal, and occipital regions. This is the first evidence that neuroimaging techniques may inform the clinical assessment of trauma-exposed individuals by providing an accurate and objective quantitative estimation of psychopathology. Furthermore, the significant contribution of parietal and occipital regions to such estimation challenges the traditional view of PTSD as a disorder specific to the fronto-limbic network.
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Philip NS, Kuras YI, Valentine TR, Sweet LH, Tyrka AR, Price LH, Carpenter LL. Regional homogeneity and resting state functional connectivity: associations with exposure to early life stress. Psychiatry Res 2013; 214:247-53. [PMID: 24090510 PMCID: PMC3849340 DOI: 10.1016/j.pscychresns.2013.07.013] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Revised: 07/29/2013] [Accepted: 07/31/2013] [Indexed: 11/19/2022]
Abstract
Early life stress (ELS) confers risk for psychiatric illness. Previous literature suggests ELS is associated with decreased resting-state functional connectivity (rs-FC) in adulthood, but there are no studies of resting-state neuronal activity in this population. This study investigated whether ELS-exposed individuals demonstrate resting-state activity patterns similar to those found in PTSD. Twenty-seven adults (14 with at least moderate ELS), who were medication-free and without psychiatric or medical illness, underwent MRI scans during two 4-minute rest periods. Resting-state activity was examined using regional homogeneity (ReHo), which estimates regional activation patterns through indices of localized concordance. ReHo values were compared between groups, followed by rs-FC analyses utilizing ReHo-localized areas as seeds to identify other involved regions. Relative to controls, ELS subjects demonstrated diminished ReHo in the inferior parietal lobule (IPL) and superior temporal gyrus (STG). ReHo values were inversely correlated with ELS severity. Secondary analyses revealed decreased rs-FC between the IPL and right precuneus/posterior cingulate, left fusiform gyrus, cerebellum and caudate in ELS subjects. These findings indicate that ELS is associated with altered resting-state activity and connectivity in brain regions involved in trauma-related psychiatric disorders. Future studies are needed to evaluate whether these associations represent potential imaging biomarkers of stress exposure.
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Affiliation(s)
- Noah S Philip
- Laboratory for Clinical and Translational Neuroscience, Butler Hospital, Department of Psychiatry and Human Behavior, Alpert Medical School of Brown University, Providence, RI, United States.
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Maximo JO, Keown CL, Nair A, Müller RA. Approaches to local connectivity in autism using resting state functional connectivity MRI. Front Hum Neurosci 2013; 7:605. [PMID: 24155702 PMCID: PMC3792552 DOI: 10.3389/fnhum.2013.00605] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2013] [Accepted: 09/05/2013] [Indexed: 11/13/2022] Open
Abstract
While the literature on aberrant long-distance connectivity in autism spectrum disorder (ASD) has grown fast over the past decade, little is known about local connectivity. We used regional homogeneity and local density approaches at different spatial scales to examine local connectivity in 29 children and adolescents with ASD and 29 matched typically developing participants, using resting state functional magnetic resonance imaging data. Across a total of 12 analysis pipelines, the gross pattern of between-group findings was overall stable, with local overconnectivity in the ASD group in occipital and posterior temporal regions and underconnectivity in middle/posterior cingulate, and medial prefrontal regions. This general pattern was confirmed in secondary analyses for low-motion subsamples (n = 20 per group), in which time series segments with >0.25 mm head motion were censored, as well as in an analysis including global signal regression. Local overconnectivity in visual regions appears consistent with preference for local over global visual processing previously reported in ASD, whereas cingulate and medial frontal underconnectivity may relate to aberrant function within the default mode network.
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Affiliation(s)
- Jose O Maximo
- Brain Development Imaging Laboratory, Department of Psychology, San Diego State University San Diego, CA, USA
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