Updated parameters and expanded simulation options for a model of the auditory periphery.
A phenomenological model of the auditory periphery in cats was previously developed by Zilany and colleagues [J. Acoust. Soc. Am. 126, 2390-2412 (2009)] to examine the detailed transformation of acoustic signals into the auditory-nerve representation. In this paper, a few issues arising from the responses of the previous version have been addressed. The parameters of the synapse model have been readjusted to better simulate reported physiological discharge rates at saturation for higher characteristic frequencies [Liberman, J. Acoust. Soc. Am. 63, 442-455 (1978)]. This modification also corrects the responses of higher-characteristic frequency (CF) model fibers to low-frequency tones that were erroneously much higher than the responses of low-CF model fibers in the previous version. In addition, an analytical method has been implemented to compute the mean discharge rate and variance from the model's synapse output that takes into account the effects of absolute refractoriness.
Department of Biomedical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia.
Muhammad S A
MS
Zilany
Department of Electrical and Computer Engineering, McMaster University, Hamilton, Ontario, L8S 4K1, Canada.
Ian C
IC
Bruce
Departments of Biomedical Engineering and Neurobiology and Anatomy, University of Rochester, Rochester, New York 14642.
Laurel H
LH
Carney
D000161:Acoustic Stimulation; D000818:Animals; D001306:Auditory Pathways / Q000502:physiology; D001307:Auditory Perception; D002415:Cats; D003056:Cochlear Nerve / Q000502:physiology*; D003198:Computer Simulation; D005072:Evoked Potentials, Auditory; D006199:Hair Cells, Auditory, Inner / Q000502:physiology*; D008959:Models, Neurological; D012032:Refractory Period, Electrophysiological; D013018:Sound Spectrography; D009435:Synaptic Transmission; D013997:Time Factors