Auditory evoked potentials as probes of hemispheric differences in cognitive processing

Author(s): Shucard, J. L., Thomas, D. G.

Journal/Book: Science. 1977; 197: 1295-8.

Abstract: The amplitude of auditory evoked potentials recorded from the cerebral hemispheres to pairs of task-irrelevant tones was related to differential hemispheric engagement in ongoing cognitive activity (for example, verbal versus musical) . The hemisphere hypothesized to be most engaged in the ongoing cognitive task, as compared to the unengaged hemisphere, produced a greater potential difference between the temporal and reference electrode to the second of the tone pairs. These findings are related to "fast habituation" and "recovery cycle.".

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