Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.11861/7157
Title: Theory of mind in schizotype: a behavioral and event-related potential (ERP) study
Authors: Leung, Carole 
Lei, Ka-Shun 
Wang, Shu-Mei 
Dr. LAM Yin-Hung, Bess 
Issue Date: 2021
Source: Schizophrenia Research: Cognition, Mar. 2021, vol. 23, article no. 100190.
Journal: Schizophrenia Research: Cognition 
Abstract: Background Schizophrenia is known for their theory of mind (ToM) impairment. However, this impairment in schizotypy (schizotypal traits) lacks investigation. Aims The present study investigated: (1) whether ToM ability was impaired in schizotypy; (2) whether the ERP amplitudes in nine brain regions of interest associated with ToM (e.g., frontal region) in schizotypy and healthy controls differed; and (3) whether the relationship between ToM performances and ERP amplitudes in schizotypy differed from that in healthy controls. Method Forty eight adolescents and young adults (16 schizotypy) with the mean age of 18 years were tested. The Reading the Mind in the Eyes Test (RMET) was used to assess their ToM during which ERP amplitudes were recorded. Results The schizotypy group showed significantly lower ERP amplitudes in all conditions of RMET in frontal, frontal-central, central, occipital and temporal regions when compared to those in healthy controls. Also, schizotypy's ERP amplitudes in the frontal, frontal-central, central, occipital, and temporal regions were different from those in the healthy individuals in responding to different types of ToM stimuli (positive, negative and neutral). In schizotypy group, reaction time responding to emotional stimuli was negatively related to ERP amplitudes in the frontal, central-parietal, parietal, occipital, and occipito-temporal regions during RMET while no significant correlations were found in healthy controls. Conclusion The present findings inform us with the knowledge regarding the neural and behavioral abnormality of ToM in schizotypy, suggesting that brain activity can be an alternative to detect ToM impairment in schizotypy.
Type: Peer Reviewed Journal Article
URI: http://hdl.handle.net/20.500.11861/7157
ISSN: 2215-0013
DOI: 10.1016/j.scog.2020.100190
Appears in Collections:Counselling and Psychology - Publication

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