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Science 17 December 1982:
Vol. 218. no. 4578, pp. 1235 - 1237
DOI: 10.1126/science.7146906
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Articles

Science, Vol 218, Issue 4578, 1235-1237
Copyright © 1982 by American Association for the Advancement of Science

articles

Asymmetrical brain activity discriminates between positive and negative affective stimuli in human infants

RJ Davidson and NA Fox

Ten-month-old infants viewed videotape segments of an actress spontaneously generating a happy or sad facial expression. Brain activity was recorded from the left and right frontal and parietal scalp regions. In two studies, infants showed greater activation of the left frontal than of the right frontal area in response to the happy segments. Parietal asymmetry failed to discriminate between the conditions. Differential lateralization of the hemispheres for affective processes seems to be established by 10 months of age.


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