Effect of Problem Solving on Right and Left Hemisphere 40 Hertz EEG Activity

Abstract

ABSTRACT EEG activity within the alpha, beta II and 40 Hz bands was monitored during periods of problem solving and non‐problem solving. Concomitant 40 Hz EMG activity was also monitored to show a dissociation between it and 40 Hz EEG activity. Twenty‐four right‐handed subjects were used. Results indicate that during problem solving there is a reduction in activity within the alpha and beta II bands relative to non‐problem solving periods. Within the 40 Hz EEG band there was increased activity over the hemisphere assumed to be maximally engaged in the problem solving task. Activity within the 40 Hz EMG band showed bilateral increases during problem solving. It was also found that 40 Hz EMG activity made little, if any, contribution to 40 Hz EEG activity.