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

Cocchi, Luca, Schenk, Francoise, Volken, Hendri, Bovet, Pierre, Parnas, Josef and Vianin, Pascal (2007) Visuo-spatial processing in a dynamic and a static working memory paradigm in schizophrenia. Psychiatry Research, 152 2-3: 129-142. doi:10.1016/j.psychres.2006.02.004

Author Cocchi, Luca
Schenk, Francoise
Volken, Hendri
Bovet, Pierre
Parnas, Josef
Vianin, Pascal
Title Visuo-spatial processing in a dynamic and a static working memory paradigm in schizophrenia
Journal name Psychiatry Research   Check publisher's open access policy
ISSN 0165-1781
Publication date 2007-08-01
Sub-type Article (original research)
DOI 10.1016/j.psychres.2006.02.004
Volume 152
Issue 2-3
Start page 129
End page 142
Total pages 14
Place of publication Shannon, Clare Ireland
Publisher Elsevier Ireland
Language eng
Formatted abstract
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
Keyword Schizophrenia
Visuo-spatial sketchpad
Dynamic stimuli
Static stimuli
Term Visual Memory
Perceptual Organization
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collections: Queensland Brain Institute Publications
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