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Uslu S, Tangermann M, Vögele C. Estimating person-specific neural correlates of mental rotation: A machine learning approach. PLoS One 2024; 19:e0289094. [PMID: 38295045 PMCID: PMC10830051 DOI: 10.1371/journal.pone.0289094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 12/29/2023] [Indexed: 02/02/2024] Open
Abstract
Using neurophysiological measures to model how the brain performs complex cognitive tasks such as mental rotation is a promising way towards precise predictions of behavioural responses. The mental rotation task requires objects to be mentally rotated in space. It has been used to monitor progressive neurological disorders. Up until now, research on neural correlates of mental rotation have largely focused on group analyses yielding models with features common across individuals. Here, we propose an individually tailored machine learning approach to identify person-specific patterns of neural activity during mental rotation. We trained ridge regressions to predict the reaction time of correct responses in a mental rotation task using task-related, electroencephalographic (EEG) activity of the same person. When tested on independent data of the same person, the regression model predicted the reaction times significantly more accurately than when only the average reaction time was used for prediction (bootstrap mean difference of 0.02, 95% CI: 0.01-0.03, p < .001). When tested on another person's data, the predictions were significantly less accurate compared to within-person predictions. Further analyses revealed that considering person-specific reaction times and topographical activity patterns substantially improved a model's generalizability. Our results indicate that a more individualized approach towards neural correlates can improve their predictive performance of behavioural responses, particularly when combined with machine learning.
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Affiliation(s)
- Sinan Uslu
- Department of Behavioural and Cognitive Sciences, University of Luxembourg, Esch-sur-Alzette, Luxembourg
| | - Michael Tangermann
- Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, The Netherlands
| | - Claus Vögele
- Department of Behavioural and Cognitive Sciences, University of Luxembourg, Esch-sur-Alzette, Luxembourg
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García-Pérez Á, González-Rodríguez A, Godoy-Giménez M, Sayans-Jiménez P, Cañadas F, Estévez ÁF. Mental rotation and schizotypal personality traits: A Bayesian approach. Scand J Psychol 2023; 64:113-122. [PMID: 36169211 DOI: 10.1111/sjop.12874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 09/03/2022] [Accepted: 09/11/2022] [Indexed: 11/28/2022]
Abstract
People diagnosed with schizophrenia exhibit mental rotation differences, suggesting that clinical levels of positive symptoms, such as psychotic hallucinations, are related to disruptions in their monitoring and manipulation of mental representations. According to the psychosis continuum, findings in people with a high level of schizotypal personality traits are expected to be qualitatively similar, but research concerning this topic is scarce. A spared mental imagery manipulation in this population only could suggest that this ability might be a possible protective factor, or that the emergence of clinical-level positive symptoms could be paired with disruptions in this capacity. To explore this issue, 205 undergraduate students (122 women) completed a novel mental rotation task identifying the stimulus that was a 90, 180, or 270° rotation of a black circle with colored portions and were assessed with the Schizotypal Personality Questionnaire. Men performed better in most conditions. No relationship was detected between schizotypal personality traits and accuracy in the task. These results do not support that mental imagery manipulation disruptions may be related to schizotypal personality traits in non-clinical populations. Thus, they might instead be associated with the onset of psychosis disorders as mental representation handling is hindered. However, additional research is required including the general population, as well as those with higher levels of psychotic symptoms and psychosis disorders. Future research could also focus on working memory processes related to mental representation manipulations of different sensory modalities such as auditory mental representations and their relationship with schizotypal personality traits and clinical populations.
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Affiliation(s)
- Ángel García-Pérez
- Department of Psychology, University of Almería, Almería, Spain
- CEINSA Health Research Center, University of Almeria, Almería, Spain
| | - Antonio González-Rodríguez
- Department of Psychology, University of Almería, Almería, Spain
- CEINSA Health Research Center, University of Almeria, Almería, Spain
| | - Marta Godoy-Giménez
- Department of Psychology, University of Almería, Almería, Spain
- CEINSA Health Research Center, University of Almeria, Almería, Spain
| | - Pablo Sayans-Jiménez
- Department of Psychology, University of Almería, Almería, Spain
- CEINSA Health Research Center, University of Almeria, Almería, Spain
| | - Fernando Cañadas
- Department of Psychology, University of Almería, Almería, Spain
- CEINSA Health Research Center, University of Almeria, Almería, Spain
| | - Ángeles F Estévez
- Department of Psychology, University of Almería, Almería, Spain
- CEINSA Health Research Center, University of Almeria, Almería, Spain
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3
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Okasha TA, Omar AN, Elserafy D, Serry S, Rabie ES. Violence in relation to cognitive deficits and symptom severity in a sample of Egyptian patients with schizophrenia. Int J Soc Psychiatry 2022; 69:689-699. [PMID: 36331135 DOI: 10.1177/00207640221132706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND Patient with schizophrenia are significantly more likely to be violent than general population; and the consequences of this violence risk are often very serious for the patients, their caregivers, and the entire community. AIM To assess the risk of violence in patients with schizophrenia and its correlation with severity of symptoms and cognitive functions. METHODS A cross-sectional comparative study conducted in Okasha institute of psychiatry including 50 patients with schizophrenia compared to 50 healthy control group regarding violence risk as assessed by Historical, Clinical, and Risk Management-20 (HCR-20), case group was assessed using Structured Clinical Interview for DSM-IV (SCID-I), Positive and Negative Syndrome Scale (PANSS), cognitive functions were assessed by Wechsler Adult Intelligence Scale (WAIS), Trail Making Test (TMT) Part A and B, the Wisconsin Card Sorting Test (WCST), and the Wechsler Memory Scale (WMS). RESULTS There was a statistically significant difference between case and control groups regarding risk of violence where 58% of the case group were found to have risk of violence compared to only 18% in the control group. There was a significant correlation between this risk of violence and period of untreated psychosis, no of episodes, and history of substance use; also was significantly correlated with PANSS and Wisconsin card sorting test subscales. Regarding logistic regression analysis for factors affecting violence risk; total PANSS score and history of substance use were significant independent factors that increase violence risk. CONCLUSION Violence risk in patient with schizophrenia is a cardinal factor that may affect life of the patients, their family, and society; this risk can be affected by different factors including severity of symptoms, no of episodes, history of substance use, and cognitive function of the patients.
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Affiliation(s)
| | | | - Doha Elserafy
- Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Samar Serry
- Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Eman S Rabie
- Faculty of Medicine, Ain Shams University, Cairo, Egypt
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Bâ MB, Curtis L, Pellizzer G. Viewer and object mental rotation in young adults with psychotic disorders. Schizophr Res 2022; 240:92-102. [PMID: 34991043 PMCID: PMC9271235 DOI: 10.1016/j.schres.2021.12.040] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 10/11/2021] [Accepted: 12/24/2021] [Indexed: 11/19/2022]
Abstract
Schizophrenia patients have difficulty with processing visuo-spatial information, which may explain their deficits with considering other people's point-of-view. Processing visuo-spatial information operates on egocentric and allocentric frames of reference. Here, we tested the ability of individuals at different stages of psychotic disorders, specifically ultra-high-risk for psychosis individuals, as well as first-episode psychosis, and chronic schizophrenia patients, to perform a viewer mental rotation task and an object mental rotation task. The two tasks were differentiated only by the instruction given. Healthy individuals and patients with a diagnosis of anxiety/depressive mood disorder served as non-patient and patient controls, respectively. The results show that first-episode psychosis and chronic schizophrenia patients, but not ultra-high-risk individuals, had more errors and longer response times with both mental rotation tasks than the two control groups. In addition, chronic schizophrenia patients had additional difficulty with the object rotation task. The difference in performance between groups and tasks remained significant even after controlling for age, IQ, and antipsychotic medication dose. The results indicate that patients with psychotic disorders have a deficit of mental spatial imagery that include both egocentric and allocentric representations. This deficit may explain the difficulty of these patients with perspective-taking, and inferring other people's point of view, thoughts or intentions which is at the core of the pathogenesis of schizophrenia.
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Affiliation(s)
- Maryse Badan Bâ
- Department of Psychiatry, Geneva University Hospitals, Geneva, Switzerland
| | - Logos Curtis
- Department of Psychiatry, Geneva University Hospitals, Geneva, Switzerland
| | - Giuseppe Pellizzer
- Research Service, Veterans Affairs Health Care System, Minneapolis, MN, USA; Department of Neuroscience, University of Minnesota, Minneapolis, MN, USA; Department of Neurology, University of Minnesota, Minneapolis, MN, USA.
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Kargar M, Askari S, Khoshaman A, Mohammadi A. Differential diagnosis of schizophrenia and schizoaffective disorder from normal subjects using virtual reality. Psychiatry Res 2019; 273:378-386. [PMID: 30682560 DOI: 10.1016/j.psychres.2019.01.037] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 01/01/2019] [Accepted: 01/11/2019] [Indexed: 01/08/2023]
Abstract
Dysfunction of allocentric and egocentric memories is one of the core features of psychiatric disorders. There are a few navigational studies on these memories in schizophrenia and bipolar disorders, but studies in schizoaffective disorder are lacking. Here, we aim to explore allocentric and egocentric navigation deficits in these subjects using our advanced recently developed virtual reality navigation task (VRNT). Twenty patients with schizophrenia and 20 with schizoaffective disorder were compared with 20 normal volunteer subjects on VRNTs consisting of a virtual neighbourhood (allocentric memory) and a virtual maze (egocentric memory). Compared with schizoaffective disorder and control subjects, patients with schizophrenia had the worst performance on both virtual neighbourhood and virtual maze tasks. The allocentric memory in both patients with schizophrenia and those with schizoaffective disorder was more impaired than the egocentric memory (p ˂ 0.001). However, the patients with schizoaffective disorder performed better in egocentric memory than those with schizophrenia, as they had fewer errors in the virtual maze. It was concluded that allocentric memory is more impaired than egocentric in both schizoaffective disorder and schizophrenia patients, whereas patients with schizoaffective disorder performed better in egocentric memory than patients with schizophrenia. It was also concluded that allocentric memory deficits can help differentiate patients with schizophrenia and schizoaffective disorder from healthy participants, whereas egocentric memory deficits can be used to distinguish them from each other.
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Affiliation(s)
- Mahmoud Kargar
- Department of Speech Therapy, School of Rehabilitation, Tehran University of Medical Sciences, Tehran, Iran
| | - Sajad Askari
- Department of Urban Planning, Shiraz University, Shiraz, Iran
| | | | - Alireza Mohammadi
- Neuroscience Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran.
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Sreeraj VS, Shivakumar V, Bose A, Abhiram PN, Agarwal SM, Chhabra H, Narayanaswamy JC, Venkatasubramanian G. A Functional Domain Based Approach in Neurocognitive Rehabilitation with Transcranial Direct Current Stimulation: A Case Report. CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE 2019; 17:125-129. [PMID: 30690948 PMCID: PMC6361037 DOI: 10.9758/cpn.2019.17.1.125] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Revised: 02/06/2017] [Accepted: 04/13/2017] [Indexed: 11/18/2022]
Abstract
Transcranial direct current stimulation (tDCS) is a novel brain stimulation technique which has kindled hope in alleviating motor, language as well as cognitive deficits in neuronal injury. Current case report describes application of tDCS in two phases using two different protocols in a patient with hypoxic injury. In the first phase anodal stimulation of dorsolateral prefrontal cortex improved the language fluency. Subsequently, after 6 months second phase application of anodal stimulation over posterior parietal region targeted arithmetic and working memory deficits. Individualising the treatment protocols of brain stimulation, based on the lesion and the functional deficits, for neuro-rehabilitation is emphasised.
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Affiliation(s)
- Vanteemar S Sreeraj
- Translational Psychiatry Laboratory, Neurobiology Research Centre & Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bangalore, India
| | - Venkataram Shivakumar
- Translational Psychiatry Laboratory, Neurobiology Research Centre & Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bangalore, India
| | - Anushree Bose
- Translational Psychiatry Laboratory, Neurobiology Research Centre & Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bangalore, India
| | - Purohit N Abhiram
- Translational Psychiatry Laboratory, Neurobiology Research Centre & Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bangalore, India
| | - Sri Mahavir Agarwal
- Translational Psychiatry Laboratory, Neurobiology Research Centre & Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bangalore, India
| | - Harleen Chhabra
- Translational Psychiatry Laboratory, Neurobiology Research Centre & Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bangalore, India
| | - Janardhanan C Narayanaswamy
- Translational Psychiatry Laboratory, Neurobiology Research Centre & Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bangalore, India
| | - Ganesan Venkatasubramanian
- Translational Psychiatry Laboratory, Neurobiology Research Centre & Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bangalore, India
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Mohammadi A, Hesami E, Kargar M, Shams J. Detecting allocentric and egocentric navigation deficits in patients with schizophrenia and bipolar disorder using virtual reality. Neuropsychol Rehabil 2017; 28:398-415. [DOI: 10.1080/09602011.2017.1369888] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Alireza Mohammadi
- Neuroscience Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Ehsan Hesami
- Department of Speech Therapy, University of Social Welfare and Rehabilitation Science, Tehran, Iran
| | - Mahmoud Kargar
- Department of Speech Therapy, School of Rehabilitation, Tehran University of Medical Sciences, Tehran, Iran
| | - Jamal Shams
- Behavioral Research Center, Department of Psychiatry, Shahid Beheshti University of Medical Science, Tehran, Iran
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Agarwal SM, Shivakumar V, Kalmady SV, Danivas V, Amaresha AC, Bose A, Narayanaswamy JC, Amorim MA, Venkatasubramanian G. Neural Correlates of a Perspective-taking Task Using in a Realistic Three-dimmensional Environment Based Task: A Pilot Functional Magnetic Resonance Imaging Study. CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE 2017; 15:276-281. [PMID: 28783938 PMCID: PMC5565076 DOI: 10.9758/cpn.2017.15.3.276] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Revised: 12/21/2016] [Accepted: 01/10/2017] [Indexed: 11/18/2022]
Abstract
Objective Perspective-taking ability is an essential spatial faculty that is of much interest in both health and neuropsychiatric disorders. There is limited data on the neural correlates of perspective taking in the context of a realistic three-dimensional environment. We report the results of a pilot study exploring the same in eight healthy volunteers. Methods Subjects underwent two runs of an experiment in a 3 Tesla magnetic resonance imaging (MRI) involving alternate blocks of a first-person perspective based allocentric object location memory task (OLMT), a third-person perspective based egocentric visual perspective taking task (VPRT), and a table task (TT) that served as a control. Difference in blood oxygen level dependant response during task performance was analyzed using Statistical Parametric Mapping software, version 12. Activations were considered significant if they survived family-wise error correction at the cluster level using a height threshold of p<0.001, uncorrected at the voxel level. Results A significant difference in accuracy and reaction time based on task type was found. Subjects had significantly lower accuracy in VPRT compared to TT. Accuracy in the two active tasks was not significantly different. Subjects took significantly longer in the VPRT in comparison to TT. Reaction time in the two active tasks was not significantly different. Functional MRI revealed significantly higher activation in the bilateral visual cortex and left temporoparietal junction (TPJ) in VPRT compared to OLMT. Conclusion The results underscore the importance of TPJ in egocentric manipulation in healthy controls in the context of reality-based spatial tasks.
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Affiliation(s)
- Sri Mahavir Agarwal
- The Schizophrenia Clinic, Department of Psychiatry, National Institute of Mental Health & Neurosciences (NIMHANS), Bangalore, India.,Translational Psychiatry Laboratory, Cognitive Neurobiology Division, Neurobiology Research Centre, NIMHANS, Bangalore, India
| | - Venkataram Shivakumar
- The Schizophrenia Clinic, Department of Psychiatry, National Institute of Mental Health & Neurosciences (NIMHANS), Bangalore, India.,Translational Psychiatry Laboratory, Cognitive Neurobiology Division, Neurobiology Research Centre, NIMHANS, Bangalore, India
| | - Sunil V Kalmady
- The Schizophrenia Clinic, Department of Psychiatry, National Institute of Mental Health & Neurosciences (NIMHANS), Bangalore, India.,Translational Psychiatry Laboratory, Cognitive Neurobiology Division, Neurobiology Research Centre, NIMHANS, Bangalore, India
| | - Vijay Danivas
- The Schizophrenia Clinic, Department of Psychiatry, National Institute of Mental Health & Neurosciences (NIMHANS), Bangalore, India.,Translational Psychiatry Laboratory, Cognitive Neurobiology Division, Neurobiology Research Centre, NIMHANS, Bangalore, India
| | - Anekal C Amaresha
- The Schizophrenia Clinic, Department of Psychiatry, National Institute of Mental Health & Neurosciences (NIMHANS), Bangalore, India.,Translational Psychiatry Laboratory, Cognitive Neurobiology Division, Neurobiology Research Centre, NIMHANS, Bangalore, India
| | - Anushree Bose
- The Schizophrenia Clinic, Department of Psychiatry, National Institute of Mental Health & Neurosciences (NIMHANS), Bangalore, India.,Translational Psychiatry Laboratory, Cognitive Neurobiology Division, Neurobiology Research Centre, NIMHANS, Bangalore, India
| | - Janardhanan C Narayanaswamy
- The Schizophrenia Clinic, Department of Psychiatry, National Institute of Mental Health & Neurosciences (NIMHANS), Bangalore, India.,Translational Psychiatry Laboratory, Cognitive Neurobiology Division, Neurobiology Research Centre, NIMHANS, Bangalore, India
| | - Michel-Ange Amorim
- CIAMS, Univ. Paris-Sud, Université Paris-Saclay, Orsay, France.,CIAMS, Université d'Orléans, Orléans, France
| | - Ganesan Venkatasubramanian
- The Schizophrenia Clinic, Department of Psychiatry, National Institute of Mental Health & Neurosciences (NIMHANS), Bangalore, India.,Translational Psychiatry Laboratory, Cognitive Neurobiology Division, Neurobiology Research Centre, NIMHANS, Bangalore, India
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Liu F, Zhuo C, Yu C. Altered Cerebral Blood Flow Covariance Network in Schizophrenia. Front Neurosci 2016; 10:308. [PMID: 27445677 PMCID: PMC4927570 DOI: 10.3389/fnins.2016.00308] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2016] [Accepted: 06/20/2016] [Indexed: 01/10/2023] Open
Abstract
Many studies have shown abnormal cerebral blood flow (CBF) in schizophrenia; however, it remains unclear how topological properties of CBF network are altered in this disorder. Here, arterial spin labeling (ASL) MRI was employed to measure resting-state CBF in 96 schizophrenia patients and 91 healthy controls. CBF covariance network of each group was constructed by calculating across-subject CBF covariance between 90 brain regions. Graph theory was used to compare intergroup differences in global and nodal topological measures of the network. Both schizophrenia patients and healthy controls had small-world topology in CBF covariance networks, implying an optimal balance between functional segregation and integration. Compared with healthy controls, schizophrenia patients showed reduced small-worldness, normalized clustering coefficient and local efficiency of the network, suggesting a shift toward randomized network topology in schizophrenia. Furthermore, schizophrenia patients exhibited altered nodal centrality in the perceptual-, affective-, language-, and spatial-related regions, indicating functional disturbance of these systems in schizophrenia. This study demonstrated for the first time that schizophrenia patients have disrupted topological properties in CBF covariance network, which provides a new perspective (efficiency of blood flow distribution between brain regions) for understanding neural mechanisms of schizophrenia.
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Affiliation(s)
- Feng Liu
- Department of Radiology and Tianjin Key Laboratory of Functional Imaging, Tianjin Medical University General Hospital Tianjin, China
| | - Chuanjun Zhuo
- Department of Radiology and Tianjin Key Laboratory of Functional Imaging, Tianjin Medical University General HospitalTianjin, China; Department of Psychiatry Functional Neuroimaging Laboratory, Tianjin Mental Health Center, Tianjin Anding HospitalTianjin, China; Department of Psychiatry, Tianjin Anning HospitalTianjin, China
| | - Chunshui Yu
- Department of Radiology and Tianjin Key Laboratory of Functional Imaging, Tianjin Medical University General Hospital Tianjin, China
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