Echo suppression in a computational model of the precedence effect

Neurophysiological evidence suggests that the so-called precedence effect is a composite of multiple phenomena, in particular echo suppression and “active” mechanisms that build up and release suppression. The authors propose a simple functional model of echo suppression in a population of low-frequency ITD-sensitive neurons in the inferior colliculus. Their model is based on Zurek´s 1987 proposal, and they show that it is consistent with Zurek´s 1980 psychophysical data by presenting the results of two experiments. The current model is extensible to other localization cues represented by rate-place codes, and the authors suggest that a model such as this is a necessary component of computational models of spatial hearing