| Autor: |
Lacroix, J. Michael, Comper, Paul |
| Předmět: |
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| Zdroj: |
Psychophysiology; Mar1979, Vol. 16 Issue 2, p116-129, 14p |
| Abstrakt: |
Three experiments examined patterns of bilateral differences in skin conductance as a function of cognitive tasks intended to produce specific manipulations in the relative activation of the two hemispheres. Experiments 1 and 2 employed right-handed subjects, and examined the effects of Verbal (left-hemispheric) and Spatial (right-hemispheric) tasks. In both experiments response amplitudes were substantially smaller in the hand contralateral to the more activated hemisphere than in the ipsilateral hand. Experiment 2 also examined the effects of Music and Number tasks, intended to produce a similar level of activation in the two hemispheres: these tasks were not accompanied by reliable bilateral differences in electrodermal activity. Experiment 3 consisted of a replication of Experiment 2 with subjects (sinistrals) known, as a group, to exhibit little functional hemispheric specialization. In these subjects, bilateral electrodermal differences did not vary systematically as a function of tasks. These findings argue strongly for the presence of lateralized cortical influences on electrodermal activity, and their implications for psychological and neurophysiological models of electrodermal functioning are discussed. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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