Embedded figures in schizophrenia: A main deficit but no specificity.

Autor:	Favrod O; Laboratory of Psychophysics, Brain Mind Institute, École Polytechnique Fédérale de Lausanne (EPFL), Switzerland., Brand A; Laboratory of Psychophysics, Brain Mind Institute, École Polytechnique Fédérale de Lausanne (EPFL), Switzerland., Berdzenishvili E; Department of Psychiatry, Tbilisi State Medical University, Tbilisi, Georgia., Chkonia E; Department of Psychiatry, Tbilisi State Medical University, Tbilisi, Georgia.; Institute of Cognitive Neurosciences, Agricultural University of Georgia, Tbilisi, Georgia., Akselrod M; MySpace Laboratory, Department of Clinical Neurosciences, University Hospital (CHUV), Lausanne, Switzerland., Wagemans J; Laboratory of Experimental Psychology, Department of Brain and Cognition, KU Leuven (University of Leuven), Belgium., Herzog MH; Laboratory of Psychophysics, Brain Mind Institute, École Polytechnique Fédérale de Lausanne (EPFL), Switzerland., Roinishvili M; Institute of Cognitive Neurosciences, Agricultural University of Georgia, Tbilisi, Georgia.; Laboratory of Vision Physiology, Beritashvili Centre of Experimental Biomedicine, Tbilisi, Georgia.
Jazyk:	angličtina
Zdroj:	Schizophrenia research. Cognition [Schizophr Res Cogn] 2021 Dec 13; Vol. 28, pp. 100227. Date of Electronic Publication: 2021 Dec 13 (Print Publication: 2022).
DOI:	10.1016/j.scog.2021.100227
Abstrakt:	Visual deficits are core deficits of schizophrenia. Classically, deficits are determined with demanding psychophysical tasks requiring fine-grained spatial or temporal resolution. Less is known about holistic processing. Here, we employed the Leuven Embedded Figures Test (L-EFT) measuring classic aspects of Gestalt processing. A target shape is embedded in a context and observers have to detect as quickly as possible in which display the target is embedded. Targets vary in closure, symmetry, complexity, and good continuation. In all conditions, schizophrenia patients had longer RTs compared to controls and depressive patients and to a lesser extent compared to their siblings. There was no interaction suggesting that, once the main deficit of schizophrenia patients is discarded, there are no further deficits in Gestalt perception between the groups. This result is in line with a growing line of research showing that when schizophrenia patients are given sufficient time to accomplish the task, they perform as well as controls. Competing Interests: The authors declare that there is no conflict of interest. (© 2021 The Authors. Published by Elsevier Inc.)
Databáze:	MEDLINE
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