Document Detail


A model of frequency coding in the central auditory nervous system.
MedLine Citation:
PMID:  10894007     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
A phenomenological model for neural coding in the central auditory system is presented. This model is based on average rate-place codes and the hypothesis is that the rate-place code present in the population of low spontaneous rate nerve fibres is adequate to account for frequency discrimination thresholds across the entire audible frequency range. The activity of a population of nerve fibres in response to an input pure tone is calculated and a neural spike train pattern is generated. An optimal central observer estimates the input frequency from the spike train pattern. The model output is the frequency difference limen at the specific input frequency, determined from the estimated input frequency. It is shown that a rate-place code can account for psychoacoustically observed frequency difference limens. The model also supports the hypothesis that a human listener does not make full use of all the information relevant to frequency that is available in auditory nerve spike trains.
Authors:
J J Hanekom
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The South African journal of communication disorders. Die Suid-Afrikaanse tydskrif vir Kommunikasieafwykings     Volume:  46     ISSN:  0379-8046     ISO Abbreviation:  S Afr J Commun Disord     Publication Date:  1999  
Date Detail:
Created Date:  2000-10-25     Completed Date:  2001-02-08     Revised Date:  2008-02-12    
Medline Journal Info:
Nlm Unique ID:  7805099     Medline TA:  S Afr J Commun Disord     Country:  SOUTH AFRICA    
Other Details:
Languages:  eng     Pagination:  83-90     Citation Subset:  IM    
Affiliation:
Department of Electrical and Electronic Engineering, University of Pretoria.
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MeSH Terms
Descriptor/Qualifier:
Auditory Cortex / physiology*
Auditory Pathways / physiology*
Computer Simulation
Evoked Potentials, Auditory
Humans
Loudness Perception / physiology*
Models, Biological*
Nerve Fibers / physiology*
Peripheral Nerves / physiology
Pitch Discrimination / physiology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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