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Schizophr Res Cogn. 2018 Aug 3;13:3-6. doi: 10.1016/j.scog.2018.07.002. eCollection 2018 Sep.

Positive symptoms and time perception in schizophrenia: A meta-analysis.

Author information

1
Department of Clinical Epidemiology, Translational Medical Center, National Center of Neurology and Psychiatry, Tokyo, Japan.
2
Faculty of Medicine, University of Tsukuba, Ibaraki, Japan.
3
Department of Preventive Intervention for Psychiatric Disorders, National Institute of Mental Health, National Center of Neurology and Psychiatry, Tokyo, Japan.

Abstract

Positive symptoms of schizophrenia may be related to distortions in time perception. To examine this issue, we conducted a meta-analysis to determine whether positive symptoms are associated with deficits in time processing performance. MEDLINE and Web of Science were searched from January 1980 through March 2017, and all related articles and their references were scrutinized to find relevant studies. Studies were selected if they included participants with a diagnosis of schizophrenia, and reported data from behavioral measures of interval timing (e.g. duration discrimination and temporal order judgement). The results indicated that positive symptoms of schizophrenia are related with overestimation of interval timing (i.e., acceleration of the "internal clock"), and suggest that time perception may be associated with psychosis.

KEYWORDS:

Internal clock; Interval timing; Positive symptoms; Psychosis; Time perception

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