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Contextual processing in patients with schizophrenia

Published online by Cambridge University Press:  19 July 2023

M. Okruashvili ,
O.-H. Choung ,
D. Gordillo ,
M. Roinishvili ,
A. Brand ,
M. H. Herzog  and
E. Chkonia
M. Okruashvili*
Affiliation:
Tbilisi mental health centre, Tbilisi, Georgia
O.-H. Choung
Affiliation:
École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
D. Gordillo
Affiliation:
École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
M. Roinishvili
Affiliation:
Ivane Beritashvili Centre of Experimental Biomedicine
A. Brand
Affiliation:
École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
M. H. Herzog
Affiliation:
École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
E. Chkonia
Affiliation:
Tbilisi State Medical University, Tbilisi, Georgia
*
*Corresponding author.

Abstract

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Introduction

Patients with schizophrenia have deficits in contextual vision. However, results are often very mixed. In some paradigms, patients do not take the context into account and therefore act more veridically than healthy controls. In other paradigms, context impairs performance in patients more strongly than in healthy controls. These mixed results may be explained by differences in paradigms, as well as by small or biased samples, given the large heterogeneity of the disease.

Objectives

To understand if there are general contextual deficits in schizophrenia.

Methods

17 schizophrenia patients and 16 age-matched controls were tested with a combined crowding and uncrowding paradigm.

Results

Schizophrenia patients show qualitatively similar crowding performance as controls. In the uncrowding condition, however, patientsimproved less than controls. We suggest that performance in the various paradigms depends on idiosyncratic aspects of the paradigm in addition to the heterogeneity of the disease.

Conclusions

There are no general impaired mechanisms in schizophrenia. Deficits depend strongly on idiosyncrasies of the specific stimuli.

Disclosure of Interest

None Declared

Type
Abstract
Information
European Psychiatry , Volume 66 , Special Issue S1: Abstracts of the 31st European Congress of Psychiatry , March 2023 , pp. S1072
Creative Commons
Creative Common License - CCCreative Common License - BY
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.
Copyright
© The Author(s), 2023. Published by Cambridge University Press on behalf of the European Psychiatric Association
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