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Neuropsychology. 1998 Oct;12(4):526-32.

Asymmetrical hemispheric activation and behavioral persistence: effects of unilateral muscle contractions.

Author information

1
Department of Psychology, University of Toronto, Ontario, Canada. schiff@psych.utoronto.ca

Abstract

Contractions of the left hand and of the left side of the lower third of the face induce negative emotional states whereas right-sided contractions induce positive states. Contractions also have mood-congruent influences on perception. This article reports that contractions affect behavior as well. Persistence in attempting to solve insoluble problems is greater following right-sided contractions than following left-sided contractions. This effect is unrelated to dominance of the contracted muscles because right-handed individuals tend to be left-face dominant. Results support the hypothesis that unilateral contractions activate the contralateral cerebral hemispheres and arouse the hemispheres' respective functions with regard to emotion and behavior.

PMID:
9805322
[Indexed for MEDLINE]

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