期刊
SCHIZOPHRENIA RESEARCH
卷 156, 期 1, 页码 51-55出版社
ELSEVIER
DOI: 10.1016/j.schres.2014.04.001
关键词
Time; Temporal order; Synchrony; Temporal window; Time-event structure; Schizophrenia
类别
资金
- French National Institute for Health and Medical Research (INSERM)
- Centre Hospitalier Regional Universitaire of Strasbourg [PHRCI 2010-HUS 4706]
- Strasbourg Neuropole
- Foundation for Research in Psychiatry and Mental Health
- FondaMental Foundation
- APICIL Foundation
- Agence Nationale de la Recherche [ANR-10-BLAN-1903-01, ANR-12-SAMA-0016-03]
- Agence Nationale de la Recherche (ANR) [ANR-10-BLAN-1903] Funding Source: Agence Nationale de la Recherche (ANR)
The ability to order events in time plays a pervasive role in cognitive functions, but has only rarely been explored in patients with schizophrenia. Results we obtained recently suggested that patients have difficulties following events over time. However, this impairment concerned implicit responses at very short asynchronies, and it is not known whether it generalizes to subjective temporal order judgments. Here, we make a direct comparison between temporal order judgments and simultaneity/asynchrony discrimination in the same patients. Two squares were displayed on the screen either simultaneously or with an asynchrony of 24 to 96 ms. In one session 20 patients and 20 controlsmade a temporal order judgment and in the other they discriminated between simultaneous and asynchronous stimuli. Controls recorded similar performances in the two tasks at asynchronies above 50 ms, whereas patients displayed a sizeable impairment in temporal order judgment selectively. This impairment occurred in the easiest conditions, with the largest SOAs (Stimulus Onset Asynchronies) and only in the temporal order judgment. The results are the first evidence that patients with schizophrenia have a selective difficulty determining temporal order, even for asynchronies producing a clear perception of asynchrony. This impairment may mediate difficulties engaging oneself in everyday life events. (C) 2014 Elsevier B. V. All rights reserved.
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