Depression and hemispheric site of cerebral vascular accident

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Abstract
In order to investigate the possible role of left and right hemisphere neural structures in the manifestation of depression, 50 left brain damaged and 50 right brain damaged stroke inpatients were administered the Zung Depression Scale (ZD S) during the course of the rehabilitation phase of their treatment. These subjects were randomly chosen from all stroke patients receiving rehabilitation services who could be administered the ZDS. Approximately 30% of these subjects, regardless of the site of lesion, were clinically depressed. The severity of depression was independent of demographic factors and time since injury. Right brain damaged patients reported significantly more sleep disturbance, psychomotor agitation and pervasive sense of sadness. These results were discussed in light of previous findings that damaged to the left hemisphere results in greater depression. A model of reactive depression that results from neurological disability was proposed to partially account for these findings.

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