Reports

Rhythms in human performance: 1 1/2-hour oscillations in cognitive style

Science  22 Jun 1979:
Vol. 204, Issue 4399, pp. 1326-1328
DOI: 10.1126/science.451541

Abstract

Performance on verbal and spatial matching tasks was assessed every 15 minutes for 8 hours. Significant 60- to 100-minute oscillations were observed for each task. These oscillations were 180 degrees out of phase, supporting the hypothesis that in humans the basic rest activity cycle involves alternating activation of processing systems residing in the two cerebral hemispheres.

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