Hemispheric specialization for emotional expression: A reexamination of results from intracarotid administration of sodium amobarbital

Gregory P. Lee, David W. Loring, Kimford J. Meader, Betty B. Brooks

Research output: Contribution to journalArticle

56 Scopus citations


Emotional and behavioral responses to sodium amobarbital injection were examined in 44 epilepsy surgery candidates. Thirty-three emotional reactions occurred in 26 patients, 44% of the reactions following right hemisphere injection and 32% after injection of the left hemisphere. Among all patients examined, laughter/elated mood was statistically more frequent following right hemisphere injection while crying was statistically associated with left hemisphere injections. These observed effects were not related to amobarbital dose, sex, bilateral hemispheric inactivation (angiographic crossflow), general cognitive status, or side of seizure onset. These results support differing specialization of emotional expression in the right and left cerebral hemispheres and their subcortical connections.

Original languageEnglish (US)
Pages (from-to)267-280
Number of pages14
JournalBrain and Cognition
Issue number2
StatePublished - Mar 1990


ASJC Scopus subject areas

  • Neuropsychology and Physiological Psychology
  • Experimental and Cognitive Psychology
  • Developmental and Educational Psychology
  • Arts and Humanities (miscellaneous)
  • Cognitive Neuroscience

Cite this