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Low-level temporal coding impairments in psychosis: Preliminary findings and recommendations for further studies.
MedLine Citation:
PMID:  21553943     Owner:  NLM     Status:  In-Data-Review    
The authors investigated whether difficulties with temporal event coding, previously reported in patients with schizophrenia, are already present during first-episode psychosis (FEP). In this experiment, the subjective judgments of the simultaneity of visually presented stimuli were compared between 11 healthy controls, 9 patients with chronic schizophrenia (CSZ), and a sample of 11 FEP patients. Participants were asked to indicate whether 2 vertical bars appeared at the same time or at different times on a computer monitor. CSZ patients' thresholds were elevated, and the FEP sample showed higher thresholds relative to controls. Although preliminary, these findings indicate a generalized disturbance in event-structure coding at early stages of psychosis and question the specificity of its disturbance. Considering the proposed relationship between event-structure coding and the experience of time in general, this study recommends that future studies refocus on psychosis in general, rather than on schizophrenia as a particular case of abnormal temporal processing. In addition, it is suggested that the relevant psychopathology will be best determined by means of a comprehensive analysis of low-level temporal coding performance in different types of psychosis. (PsycINFO Database Record (c) 2011 APA, all rights reserved).
Heike Schmidt; John McFarland; Mohamed Ahmed; Colm McDonald; Mark A Elliott
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of abnormal psychology     Volume:  120     ISSN:  1939-1846     ISO Abbreviation:  J Abnorm Psychol     Publication Date:  2011 May 
Date Detail:
Created Date:  2011-05-10     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0034461     Medline TA:  J Abnorm Psychol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  476-82     Citation Subset:  IM    
Department of Psychiatry, National University of Ireland.
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