Discusses neocortical contributions to emotional processing. Examines parameters critical to neuropsychological study of emotion: interhemispheric and intrahemispheric factors, processing mode, and communication channel. Describes neuropsychological theories of emotion. Reviews studies of right-brain-damaged, left-brain-damaged, and normal adults, findings of which support right cerebral hemispheric dominance for emotion, regardless of valence/channel, and are more consistent for perception than expression. (Author/NB)