Abstract
A same‐different psychophysical method was used to examine the discriminability of bursts of reproducible noise. Bursts in a pair were identical on “same” trials. On “different” trials, bursts were identical except for τ ms of independent noise located at either the beginning, middle, or end of the burst pairs. Fallon and Robinson [J. Acoust. Soc. Am. Suppl. 1 78, S46 (1985)] showed that discriminability depends on the temporal position and proportional duration of the independent noise. The present experiments examined whether a silent interval placed either immediately prior to or following the independent noise improves discriminability. Results showed that a silent interval only improved discriminability if it replaced a portion of the noise common to the pairs of bursts. In this experiment, a brief burst of common noise temporally separated from the independent noise by 90–120 ms caused a large decrement in performance. These data suggest that interactions occurring after such a long silent interval ...
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