Visuo-spatial processing in a dynamic and a static working memory paradigm in schizophrenia.

Détails

ID Serval
serval:BIB_9FDB262D6EC4
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Visuo-spatial processing in a dynamic and a static working memory paradigm in schizophrenia.
Périodique
Psychiatry research
Auteur(s)
Cocchi L., Schenk F., Volken H., Bovet P., Parnas J., Vianin P.
ISSN
0165-1781
Statut éditorial
Publié
Date de publication
2007
Peer-reviewed
Oui
Volume
152
Numéro
2-3
Pages
129-42
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't - Publication Status: ppublish
Résumé
Recent findings suggest that the visuo-spatial sketchpad (VSSP) may be divided into two sub-components processing dynamic or static visual information. This model may be useful to elucidate the confusion of data concerning the functioning of the VSSP in schizophrenia. The present study examined patients with schizophrenia and matched controls in a new working memory paradigm involving dynamic (the Ball Flight Task - BFT) or static (the Static Pattern Task - SPT) visual stimuli. In the BFT, the responses of the patients were apparently based on the retention of the last set of segments of the perceived trajectory, whereas control subjects relied on a more global strategy. We assume that the patients' performances are the result of a reduced capacity in chunking visual information since they relied mainly on the retention of the last set of segments. This assumption is confirmed by the poor performance of the patients in the static task (SPT), which requires a combination of stimulus components into object representations. We assume that the static/dynamic distinction may help us to understand the VSSP deficits in schizophrenia. This distinction also raises questions about the hypothesis that visuo-spatial working memory can simply be dissociated into visual and spatial sub-components.
Mots-clé
Adolescent, Adult, Disease Progression, Female, Humans, Male, Memory Disorders, Middle Aged, Neuropsychological Tests, Perceptual Disorders, Schizophrenia, Severity of Illness Index, Space Perception, Visual Perception
Pubmed
Web of science
Création de la notice
10/03/2008 9:50
Dernière modification de la notice
20/08/2019 15:06
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