Spectral cues for sound localization in cats: a model for discharge rate representations in the auditory nerve

The Journal of the Acoustical Society of America
Bradford J May, A Y Huang

Abstract

Neural representations of pinna-based spectral cues for sound localization were modeled by simulating auditory nerve discharge rates to noise bursts that had been shaped by filtering properties of the cat's head-related transfer functions (HRTFs) at 179 locations in the frontal field. The auditory nerve model transformed spectral differences between HRTFs into simulated neural rate differences. Linear equations for this transformation were developed from actual auditory nerve responses to a limited subset of HRTF-filtered noise bursts [Rice et al., J. Acoust. Soc. Am. 97, 1764-1776 (1995)]. Signal detection methods were used to investigate simulated neural responses to pairwise changes between HRTFs. The quality of neural representation for these changes, in terms of d' values, declined when the reference HRTF was moved from a central location (0 degree AZ, 0 degree EL) to a large positive azimuth in the horizontal plane (75 degrees AZ, 0 degree EL) or a high elevation in the median plane (0 degree AZ, 75 degrees EL). Most simulated responses exhibited large d' values for comparisons of contralateral versus ipsilateral azimuths, or eccentric versus frontal elevations. This rate information resulted from directionally dependent ...Continue Reading

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Citations

Aug 29, 2003·Journal of the Association for Research in Otolaryngology : JARO·Kevin A DavisBradford J May
Sep 9, 2010·Journal of the Association for Research in Otolaryngology : JARO·Lina A J ReissBradford J May
Nov 30, 2007·Neural Computation·Murat AytekinJonathan Z Simon
May 9, 2008·The Journal of Neuroscience : the Official Journal of the Society for Neuroscience·Daniel J TollinJeffrey J Tsai
Oct 29, 2000·The Journal of the Acoustical Society of America·E A Macpherson, J C Middlebrooks
Oct 26, 2000·Proceedings of the National Academy of Sciences of the United States of America·J J Yu, E D Young
Sep 11, 2009·The Journal of the Acoustical Society of America·Wolfgang KreuzerZhengsheng Chen
Apr 24, 2003·The Neuroscientist : a Review Journal Bringing Neurobiology, Neurology and Psychiatry·Daniel J Tollin
Sep 24, 2016·Trends in Hearing·Robert BaumgartnerBernhard Laback
Sep 29, 2000·The Journal of the Acoustical Society of America·C JinS Carlile
Sep 16, 2005·Journal of Neurophysiology·Eric D Young, Barbara M Calhoun

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