| Laminar fine structure of frequency organization in auditory midbrain. | |
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MedLine Citation:
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PMID: 9237756 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The perception of sound is based on signal processing by a bank of frequency-selective auditory filters, the so-called critical bands. Here we investigate how the internal frequency organization of the main auditory midbrain station, the central nucleus of the inferior colliculus (ICC), might contribute to the generation of the critical-band behaviour of its neurons. We find a unique spatial arrangement of the frequency distribution in the ICC that correlates with psychophysical critical-band characteristics. Systematic frequency discontinuities along the main tonotopic axis, in combination with a smooth frequency gradient orthogonal to the main tonotopic organization of cat ICC, reflect a layering of the frequency organization paralleling its anatomical laminae. This layered frequency organization is characterized by constant frequency ratios of corresponding locations on neighbouring laminae and may provide a spatial framework for the generation of critical bands and for signal processing within and across frequency bands for the analysis of sound. |
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Authors:
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C E Schreiner; G Langner |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S. |
Journal Detail:
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Title: Nature Volume: 388 ISSN: 0028-0836 ISO Abbreviation: Nature Publication Date: 1997 Jul |
Date Detail:
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Created Date: 1997-08-12 Completed Date: 1997-08-12 Revised Date: 2007-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0410462 Medline TA: Nature Country: ENGLAND |
Other Details:
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Languages: eng Pagination: 383-6 Citation Subset: IM |
Affiliation:
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W. M. Keck Center for Integrative Neuroscience, Sloan Center for Theoretical Neuroscience, Coleman Laboratory, University of California at San Francisco, 94143-0732, USA. chris@phy.ucsf.edu |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Acoustic Stimulation Animals Auditory Perception / physiology* Cats Electrophysiology Inferior Colliculi / cytology, physiology* Microelectrodes Models, Neurological Neurons / cytology, physiology |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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