| Neural representations of the axis of acoustic particle motion in nucleus centralis of the torus semicircularis of the goldfish, Carassius auratus. | |
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MedLine Citation:
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PMID: 12012101 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Experiments examined differential coding of acoustic particle motion axis in the auditory midbrain of goldfish. Animals were exposed to vibratory stimuli varying in axis orientation as action potentials were recorded from single units in the central neuropil of nucleus centralis in the torus semicircularis. Response magnitudes as a function of stimulation axis were visualized in three dimensional plots called directional response profiles. These are generally comparable to directional responses observed among primary saccular afferents in having substantially vertical orientations. Distortions in shape from the peripheral patterns indicate neural information processing. A three-dimensional model was used to evaluate the hypothesis that responses in the auditory midbrain reflect the convergence of excitatory and inhibitory primary afferent-like responses. Model afferent inputs were generated and combined arithmetically. This analysis gives insight into the mechanisms of information processing that appear to occur in brainstem nuclei. The lack of diversity in best axis directions suggests that this mechanism alone cannot account for directional hearing abilities in this species. The roles that this directional representation and processing may play in directional hearing and sound source localization are not yet clear. Implications of these data on current models of fish directional hearing are discussed. |
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Authors:
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W-L D Ma; R R Fay |
Publication Detail:
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Type: Journal Article; Research Support, U.S. Gov't, P.H.S. Date: 2002-04-13 |
Journal Detail:
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Title: Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology Volume: 188 ISSN: 0340-7594 ISO Abbreviation: J. Comp. Physiol. A Neuroethol. Sens. Neural. Behav. Physiol. Publication Date: 2002 May |
Date Detail:
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Created Date: 2002-05-15 Completed Date: 2002-11-15 Revised Date: 2007-11-14 |
Medline Journal Info:
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Nlm Unique ID: 101141792 Medline TA: J Comp Physiol A Neuroethol Sens Neural Behav Physiol Country: Germany |
Other Details:
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Languages: eng Pagination: 301-13 Citation Subset: IM |
Affiliation:
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Hearing Research Center, Department of Biomedical Engineering, Boston University, 44 Cummington Street, MA 02215, USA. dma@bu.edu |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Acoustic Stimulation Animals Auditory Perception / physiology* Goldfish / physiology* Mesencephalon / physiology Models, Biological Motion Perception / physiology Neurons, Afferent / physiology* Neurophysiology / methods Semicircular Canals / anatomy & histology, innervation, physiology* |
| Grant Support | |
ID/Acronym/Agency:
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1P01 DC 00293/DC/NIDCD NIH HHS; R01 DC 03666-04/DC/NIDCD NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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