CEREBRAL LATERALIZATION IN HOMOSEXUAL MALES - A PRELIMINARY EEG INVESTIGATION

A preliminary investigation was conducted to determine whether hemisph eric patterns of electrophysiological activation in male homosexuals d iffer from that of male and female heterosexuals. Electroencephalograp hic (EEG) activity was recorded over left and right cerebral hemispher ic locations while subjects performed verbal and spatial cognitive tas ks. Male homosexuals demonstrated different patterns of alpha power co mpared to heterosexual males and females during baseline recording. Di fferent hemispheric patterns of alpha activity also were observed betw een homosexual and heterosexual males during affective judgments of bo th verbal and spatial stimuli, but not between homosexual males and he terosexual females. These results provide further evidence of biologic ally-mediated functional differences between homosexuals and heterosex uals.