Models for diotic and dichotic detection (Davidson et al. 2009)

Several psychophysical models for masked detection were evaluated using reproducible noises. The data were hit and false-alarm rates from three psychophysical studies of detection of 500-Hz tones in reproducible noise under diotic (N0S0) and dichotic (N0Spi) conditions with four stimulus bandwidths (50, 100, 115, and 2900 Hz). Diotic data were best predicted by an energy-based multiple-detector model that linearly combined stimulus energies at the outputs of several critical-band filters. The tone-plus-noise trials in the dichotic data were best predicted by models that linearly combined either the average values or the standard deviations of interaural time and level differences; however, these models offered no predictions for noise-alone responses. ...". The Breebart et al. 2001 and the Dau et al. 1996 models are supplied at the Carney lab web site.

Cell Type(s): Auditory nerve

Model Concept(s): Audition

Simulation Environment: MATLAB (web link to model); C or C++ program (web link to model)


Davidson SA, Gilkey RH, Colburn HS, Carney LH. (2009). An evaluation of models for diotic and dichotic detection in reproducible noises. The Journal of the Acoustical Society of America. 126 [PubMed]

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