Document Detail


Vocal-motor and auditory connectivity of the midbrain periaqueductal gray in a teleost fish.
MedLine Citation:
PMID:  22826153     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The midbrain periaqueductal gray (PAG) plays a central role in the descending control of vocalization across vertebrates. The PAG has also been implicated in auditory-vocal integration, although its precise role in such integration remains largely unexplored. Courtship and territorial interactions in plainfin midshipman fish depend on vocal communication, and the PAG is a central component of the midshipman vocal-motor system. We made focal neurobiotin injections into the midshipman PAG to both map its auditory-vocal circuitry and allow evolutionary comparisons with tetrapod vertebrates. These injections revealed an extensive bidirectional pattern of connectivity between the PAG and known sites in both the descending vocal-motor and the ascending auditory systems, including portions of the telencephalon, dorsal thalamus, hypothalamus, posterior tuberculum, midbrain, and hindbrain. Injections in the medial PAG produced dense label within hindbrain auditory nuclei, whereas those confined to the lateral PAG preferentially labeled hypothalamic and midbrain auditory areas. Thus, the teleost PAG may have functional subdivisions playing different roles in vocal-auditory integration. Together the results confirm several pathways previously identified by injections into known auditory or vocal areas and provide strong support for the hypothesis that the teleost PAG is centrally involved in auditory-vocal integration.
Authors:
J Matthew Kittelberger; Andrew H Bass
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  The Journal of comparative neurology     Volume:  521     ISSN:  1096-9861     ISO Abbreviation:  J. Comp. Neurol.     Publication Date:  2013 Mar 
Date Detail:
Created Date:  2013-01-23     Completed Date:  2013-08-28     Revised Date:  2014-03-10    
Medline Journal Info:
Nlm Unique ID:  0406041     Medline TA:  J Comp Neurol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  791-812     Citation Subset:  IM    
Copyright Information:
Copyright © 2012 Wiley Periodicals, Inc.
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MeSH Terms
Descriptor/Qualifier:
Animals
Auditory Pathways / anatomy & histology*
Batrachoidiformes / anatomy & histology*,  physiology*
Mesencephalon / anatomy & histology*
Periaqueductal Gray / anatomy & histology*
Vocalization, Animal / physiology*
Grant Support
ID/Acronym/Agency:
F32 DC006156/DC/NIDCD NIH HHS; F32 DC06156/DC/NIDCD NIH HHS; R01 DC000092/DC/NIDCD NIH HHS; R01 DC00092/DC/NIDCD NIH HHS
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