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Alertness and Visuospatial Attention in Clinical Depression

Overview
Journal BMC Psychiatry
Publisher Biomed Central
Specialty Psychiatry
Date 2011 May 11
PMID 21554705
Citations 9
Authors
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Abstract

Background: Cognitive deficits are a substantial burden in clinical depression. The present study considered dysfunction in the right-hemispheric attention network in depression, examining alertness and visuospatial attention.

Methods: Three computerized visuospatial attention tests and an alertness test were administered to 16 depressive patients and 16 matched healthy controls.

Results: Although no significant group effect was observed, alertness predicted reduced visuospatial performance in the left hemifield. Furthermore, sad mood showed a trend towards predicting left visual field omissions.

Conclusions: Decreased alertness may lead to lower left hemifield visuospatial attention; this mechanism may be responsible for a spatial bias to the right side in depression, even though treatment of depression and anxiety may reduce this cognitive deficit.

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