PMID: 8975000Oct 1, 1995Paper

Neuronal correlates of perceptual amplitude-modulation detection

Hearing Research
Christian LorenziF Berthommier

Abstract

The goal of the present paper is to relate the coding of amplitude modulation (AM) in the auditory pathway to the behavioral detection performance. To address this issue, the detectability of AM was estimated by modelling a single neuron located in the central nucleus of the inferior colliculus (IC). The computational model is based on cochlear nucleus responses and a coincidence detection mechanism. The model replicated the main feature of the neuronal AM transfer function, namely a bandpass function. The IC-unit model was initially tuned to a 200-Hz modulation frequency. A single neurometric function for AM detection at this modulation frequency was generated using a 2-interval, 2-alternative forced-choice paradigm. On each trial of the experiments, AM was taken to be correctly detected by the model if the number of spikes in response to the modulated signal exceeded the number of spikes in an otherwise identical interval that contained an unmodulated signal. Psychometric functions for 4 human subjects were also measured under the same stimulus conditions. Comparison of the simulated neurometric and psychometric functions suggested that there was sufficient information in the rate response of an IC neuron well-tuned in the mo...Continue Reading

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Citations

Aug 25, 2001·The Journal of the Acoustical Society of America·C LorenziT Vonner
Jun 27, 2002·The Journal of the Acoustical Society of America·Aleksander Sek, Brian C J Moore
Aug 3, 2000·The Journal of the Acoustical Society of America·R P Derleth, T Dau
Dec 15, 2010·Journal of Neurophysiology·Pingbo YinMitchell L Sutter
Nov 18, 2005·Hearing Research·Alexandre GuérinChristian Lorenzi
Jun 3, 2016·The Journal of the Acoustical Society of America·Gabrielle E O'BrienJay T Rubinstein
Aug 27, 1999·The Journal of the Acoustical Society of America·B C MooreB R Glasberg
Mar 27, 2004·Physiological Reviews·P X JorisA Rees
Sep 9, 2000·Journal of Neurophysiology·A L GiraudA Kleinschmidt
Dec 20, 2007·Ear and Hearing·Vijaya Kumar Narne, C S Vanaja

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