title: Sex differences in functional activation patterns revealed by increased emotion processing demands.
abstract: Two [O(15)] PET studies assessed sex differences regional brain activation in the recognition of emotional stimuli. Study I revealed that the recognition of emotion in visual faces resulted in bilateral frontal activation in women, and unilateral right-sided activation in men. In study II, the complexity of the emotional face task was increased through tje addition of associated auditory emotional stimuli. Men again showed unilateral frontal activation, in this case to the left; whereas women did not show bilateral frontal activation, but showed greater limbic activity. These results suggest that when processing broader cross-modal emotional stimuli, men engage more in associative cognitive strategies while women draw more on primary emotional references.
authors.affiliation: The Brain-Body Institute, St. Joseph's Healthcare Hamilton, McMaster University, 314 Martha Wing, St.Joseph's Healthcare Hamilton, 50 Charlton Ave E., Hamilton, Ontario L8N 4A6. hallg@mcmaster.ca
authors.forename: Geoffrey B C
authors.initials: GB
authors.lastname: Hall
authors.forename: Sandra F
authors.initials: SF
authors.lastname: Witelson
authors.forename: Henry
authors.initials: H
authors.lastname: Szechtman
authors.forename: Claude
authors.initials: C
authors.lastname: Nahmias
mesh_terms: D000328:Adult; D001921:Brain / Q000033:anatomy & histology / Q000000981:diagnostic imaging / Q000502:physiology*; D001931:Brain Mapping; D004644:Emotions / Q000502:physiology*; D005260:Female; D005625:Frontal Lobe / Q000033:anatomy & histology / Q000502:physiology; D007839:Functional Laterality / Q000502:physiology*; D006801:Humans; D008032:Limbic System / Q000033:anatomy & histology / Q000502:physiology; D008297:Male; D008568:Memory / Q000502:physiology; D009483:Neuropsychological Tests; D010364:Pattern Recognition, Visual / Q000502:physiology*; D010775:Photic Stimulation; D012727:Sex Characteristics; D014055:Tomography, Emission-Computed