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Cognitive Impairments in Patients with Seasonal Affective Disorder

Published online by Cambridge University Press:  02 January 2018

John T. O'Brien ,
Barbara J. Sahakian  and
Stuart A. Checkley
John T. O'Brien
Affiliation:
Maudsley Hospital, London
Barbara J. Sahakian
Affiliation:
Department of Experimental Psychology, University of Cambridge
Stuart A. Checkley*
Affiliation:
Institute of Psychiatry, De Crespigny Park, Denmark Hill, London SE5 8AF
*
∗Correspondence
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Abstract

Eleven patients with seasonal affective disorder (SAD) and ten controls matched for age, IQ, and education were tested on a number of computerised tests designed to assess attention, memory, and learning. When depressed, patients showed no deficit in attention but were impaired on spatial memory and learning. They were also significantly slower to respond than controls, with a pattern that suggested slowed information processing centrally, rather than simple sensory or motor slowing. On recovery from depression, improvement was seen in most tests, although impairment remained in latency to respond on a test of spatial memory. This continuing impairment correlated with residual depressive symptoms but not with ventricular brain ratio (VBR).

Type
Papers
Information
The British Journal of Psychiatry , Volume 163 , Issue 3 , September 1993 , pp. 338 - 343
Copyright
Copyright © Royal College of Psychiatrists, 1993 

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Footnotes

Currently, in Old Age Psychiatry, University of Melbourne, Australia

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