J Abnorm Psychol. 1991 Nov;100(4):535-45.

Left frontal hypoactivation in depression.

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Department of Psychology, University of Wisconsin-Madison 53706.

Abstract

Baseline resting electroencephalogram activity was recorded with 3 different reference montages from 15 clinically depressed and 13 control subjects. Power in all frequency bands was extracted by fast Fourier transformation. There was a significant Group X Hemisphere interaction in the mid-frontal region, for the alpha band power only. Depressed subjects had less left-sided activation (i.e., more alpha activity) than did normal control subjects. This pattern of diminished left-sided frontal activation is interpreted as indicating a deficit in approach mechanisms in depressed subjects.

PMID:: 1757667; [PubMed - indexed for MEDLINE]

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