Document Detail

Neurobehavioral studies of the central auditory system.
MedLine Citation:
PMID:  9153114     Owner:  NLM     Status:  MEDLINE    
The history of ablation-behavior experimentation into the central system has led to conclusions not obviously derivable from knowledge of neuroanatomy or neurophysiology alone. 1) The ventral, and not the dorsal, acoustic stria is necessary and sufficient for discriminating the physical dimensions of sound. 2) The ventral, and not the dorsal, system is also necessary and sufficient for discriminations of both the azimuth and elevation of a sound source. 3) A functional "acoustic chiasm" is centered in the superior olivary complex, resulting in the neurobehavioral "representation" of each acoustic hemifield only in the contralateral side of the central system (despite the presence of ipsilateral activity). 4) The behavioral usefulness of the ipsilateral activity present above the superior olivary complex, the role of the entire dorsal acoustic system, and the role of the descending system remain unknown. The fact that the only clear structural-behavioral correspondence yet known is that between the superior olives and sound localization seems to suggest that the more fruitful avenues of further inquiry into the roles of the central auditory system might lie in the more biologic (or Darwinian) as opposed to the physical (or Helmholtzian) dimensions of auditory processing.
R B Masterton
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.; Review    
Journal Detail:
Title:  The Annals of otology, rhinology & laryngology. Supplement     Volume:  168     ISSN:  0096-8056     ISO Abbreviation:  Ann Otol Rhinol Laryngol Suppl     Publication Date:  1997 May 
Date Detail:
Created Date:  1997-06-10     Completed Date:  1997-06-10     Revised Date:  2008-02-21    
Medline Journal Info:
Nlm Unique ID:  1256156     Medline TA:  Ann Otol Rhinol Laryngol Suppl     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  31-4     Citation Subset:  IM    
Department of Psychology, Florida State University, Tallahassee, USA.
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MeSH Terms
Auditory Cortex / physiology*
Auditory Pathways / physiology*
Auditory Perception / physiology*
Inferior Colliculi / physiology
Grant Support

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