Abstract
The growth and decay of auditory sensation with time were studied by comparing the detectability of brief tone bursts with that of brief tone gaps. A two-alternative forced-choice procedure showed that the percentage of correct detections of bursts was greater than the percentage of correct detections of gaps of equal duration. This result held for bursts and gaps of 25- to 200-msec duration in a 1000-Hz tone at two different power-to-noise ratios. The results were compatible with a theory of temporal summation in which a transformation of the sound is weighted by a decaying exponential function with a time constant of 5 sec−1. The greater detectability of bursts than gaps also means that the growth of auditory sensation is faster than its decay.
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