Abstract
Ten normal adult right-handed subjects received phonemic combinations (/əpik/,/əpak/, /a/, /pi/, /pa/) and pure tones (2500 and 8000 Hz) binaurally through matched earphones. Fifty responses from electrodes at P 5, P 6, C 6, F 7 and F 8 (referenced to linked mastoids) were summated, and evoked potentials from homologous areas were measured separately and superimposed in order to observe differences. Visual inspection of superimposed responses showed no consistent gross asymmetries that lateralized to either hemisphere. Comparison between amplitude of evoked potentials (N 1, P 2) at P 5 and P 6 were not significant ( P < 0.05; paired t test). We suggest that our technique may not be a useful clinical test for cerebral dominance.
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