Detection of interaural differences of intensity in trains of high-frequency clicks as a function of interclick interval and number.
Listeners were asked to detect interaural differences of intensity in trains of 4000-Hz clicks as the interclick interval (ICI) was varied from 10 to 1 ms and the number of clicks in a train (n) was varied from 1 to 32. As has previously been shown for differences of time [Hafter and Dye, J. Acoust. Soc. Am. 73, 644-651 (1983)], plots of log interaural threshold versus log n produced slopes that decrease with ICI. These results are explained in terms of a saturation model which argues that as the click rate increases, the evoked neural activity changes from what is essentially a tonic response toward one that is more phasic.
D001309:Auditory Threshold / Q000502:physiology; D007839:Functional Laterality; D006801:Humans; D008144:Loudness Perception / Q000502:physiology*; D008433:Mathematics; D008959:Models, Neurological; D008960:Models, Psychological; D009474:Neurons / Q000502:physiology*; D011571:Psychoacoustics; D012032:Refractory Period, Electrophysiological; D013997:Time Factors