Abstract

The adaptation of a complex and pure-tone pitch was examined, using an adaptation stimulus composed of components of low harmonic number and test stimuli composed of components of high harmonic number, in order to examine separately the effects of pure-tone and complex pitch adaptation. The test stimulus either had the same fundamental as that of the adaptation stimulus, or it had a fundamental lower than that of the adaptation stimulus. Adaptation was measured using a pitch matching method. The adaptation and test stimuli were presented to one ear, and a pure-tone matching stimulus was presented to the opposite ear. Adaptation generally shifted the complex pitch of the test stimulus to a lower pitch. The component pitches, on the other hand, did not change, or shifted upwards slightly. The downward complex pitch changes were consistent with the adaptation of a central complex pitch channel.

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