In recent years there has been renewed interest in the perception of stimuli with time‐varying interaural time delay, intensity difference, and correlation. The results of most of these studies indicate that the binaural system loses its ability to process time‐varying spatial images when the modulation rate of these interaural cues exceeds a few Hz. The position‐variable model of subjective lateral position [R. M. Stern and H. S. Colburn, J. Acoust. Soc. Am. 64, 127–140 (1978)] can be extended to accommodate stimuli with time‐varying interaural differences by forming time varying estimates of lateral position from interaural coincidences in auditory‐nerve activity, with greater weight applied to more recent neural events. The extended model is similar to the classical running crosscorrelation theory, but it is based on the crosscorrelation of hypothetical neural activity rather than the stimuli themselves. In this paper we present predictions of the model for the subjective laterality of time‐varying stimuli. We also compare predictions and data for discrimination and detection experiments, assuming that judgements are made on the basis of samples of the perceived lateral position and that performance is limited by the intrinsic variability of auditory‐nerve activity. [Supported by NIH.]

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