Abstract
Detection efficiency was assessed under diotic (N0S0) and dichotic (N0Sπ) conditions for various signal and masker durations utilizing one- and two-interval forced-choice procedures. Performance under dichotic conditions was severely degraded when signals and maskers were short and simultaneous. When signals and maskers began together and maskers terminated up to 120 msec after signal offset, performance was degraded under both binaural configurations compared to performance in continuous noise and when signal and maskers were simultaneous and equal in duration. Detectability was also found to be differentially effected under the two binaural conditions when short (10 or 20 msec) signals were placed at the beginning, middle, or at the end of the maskers of 100- or 200-msec duration. The degradations of performance related to signal and masker duration were found to interact with experimental paradigm.
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