Altered perception of apparent motion in schizophrenia spectrum disorder

Tschacher, Wolfgang; Dubouloz, Priscilla; Meier, Reto; Junghan, Ulrich (2008). Altered perception of apparent motion in schizophrenia spectrum disorder. Psychiatry research, 159(3), pp. 290-9. Amsterdam: Elsevier 10.1016/j.psychres.2007.04.005

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Apparent motion (AM), the Gestalt perception of motion in the absence of physical motion, was used to study perceptual organization and neurocognitive binding in schizophrenia. Associations between AM perception and psychopathology as well as meaningful subgroups were sought. Circular and stroboscopic AM stimuli were presented to 68 schizophrenia spectrum patients and healthy participants. Psychopathology was measured using the Positive and Negative Syndrome Scale (PANSS). Psychopathology was related to AM perception differentially: Positive and disorganization symptoms were linked to reduced gestalt stability; negative symptoms, excitement and depression had opposite regression weights. Dimensions of psychopathology thus have opposing effects on gestalt perception. It was generally found that AM perception was closely associated with psychopathology. No difference existed between patients and controls, but two latent classes were found. Class A members who had low levels of AM stability made up the majority of inpatients and control subjects; such participants were generally young and male, with short reaction times. Class B typically contained outpatients and some control subjects; participants in class B were older and showed longer reaction times. Hence AM perceptual dysfunctions are not specific for schizophrenia, yet AM may be a promising stage marker.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > University Psychiatric Services > University Hospital of Psychiatry and Psychotherapy > Psychotherapy
04 Faculty of Medicine > Department of Head Organs and Neurology (DKNS) > Clinic of Neurology > Centre of Competence for Psychosomatic Medicine
08 Faculty of Science > Departement of Chemistry and Biochemistry

UniBE Contributor:

Tschacher, Wolfgang; Dubouloz, Priscilla Elisabeth; Meier, Reto and Junghan, Ulrich M.

ISSN:

0165-1781

Publisher:

Elsevier

Language:

English

Submitter:

Factscience Import

Date Deposited:

04 Oct 2013 15:03

Last Modified:

06 Dec 2013 13:53

Publisher DOI:

10.1016/j.psychres.2007.04.005

PubMed ID:

18471894

Web of Science ID:

000256743800004

URI:

https://boris.unibe.ch/id/eprint/27594 (FactScience: 108940)

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