Abstract
When 2 tones of different frequency are simultaneously presented, 1 to each ear, a single pitch may be heard that corresponds to the frequency delivered to 1 ear, rather than to the other in humans. The frequency information delivered to 1 ear may be followed and to the other ear suppressed. The sequential conditions under which this effect occurs was studied. Clear ear dominance was obtained in sequences where the 2 ears received the same frequency in succession. Ear dominance was absent in sequences where successive dichotic chords were composed of different frequencies. A basis for ear dominance is proposed.

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