Abstract
Here we report an experiment in which 16 right-handed young adults named a series of unilaterally presented pictures during concurrent unimanual finger tapping with the right and left hands at separate times. A multivariate analysis of variance showed no significant differences in picture-naming reaction time between left versus right visual-field stimulations. Also the test for finger tapping was nonsignificant, with the magnitude of disruption being symmetrical for the right and left hands as a function of visual fields. It was proposed that the two cerebral hemispheres interact with each other at later processing stages when performing tasks requiring both left and right hemispheric processing resources.
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