Interaural transfer of aftereffect of changing sound level in a tone.

Monaural and interaural aftereffects of unidirectional change of sound level in a tone, were measured by a nulling procedure. The former were always much greater than the latter, demonstrating limited interaural transfer of the aftereffect. This is seen as evidence for a peripheral component in the analysis of changing sound level. Such analysis may contribute to the localization of moving sound sources. An additional, and incidental, finding was that a tone without adaptation elicited a perception of steady loudness when its sound level was diminishing slightly. This is consistent with previous evidence.