| Selectivity for spectral motion as a neural computation for encoding natural communication signals in bat inferior colliculus. | |
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MedLine Citation:
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PMID: 22090479 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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This study examines the neural computations performed by neurons in the auditory system to be selective for the direction and velocity of signals sweeping upward or downward in frequency, termed spectral motion. We show that neurons in the auditory midbrain of Mexican free-tailed bats encode multiple spectrotemporal features of natural communication sounds. These features to which each neuron is tuned are nonlinearly combined to produce selectivity for spectral motion cues present in their conspecific calls, such as direction and velocity. We find that the neural computations resulting in selectivity for spectral motion are analogous to models of motion selectivity studied in vision. Our analysis revealed that auditory neurons in the inferior colliculus (IC) are avoiding spectrotemporal modulations that are redundant across different bat communication signals and are specifically tuned for modulations that distinguish each call from another by their frequency-modulated direction and velocity, suggesting that spectral motion is the neural computation through which IC neurons are encoding specific features of conspecific vocalizations. |
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Authors:
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Sari Andoni; George D Pollak |
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Publication Detail:
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Type: Journal Article; Research Support, N.I.H., Extramural |
Journal Detail:
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Title: The Journal of neuroscience : the official journal of the Society for Neuroscience Volume: 31 ISSN: 1529-2401 ISO Abbreviation: J. Neurosci. Publication Date: 2011 Nov |
Date Detail:
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Created Date: 2011-11-17 Completed Date: 2012-01-12 Revised Date: 2012-05-18 |
Medline Journal Info:
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Nlm Unique ID: 8102140 Medline TA: J Neurosci Country: United States |
Other Details:
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Languages: eng Pagination: 16529-40 Citation Subset: IM |
Affiliation:
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Section of Neurobiology, Institute for Neuroscience, and Center for Perceptual Systems, The University of Texas at Austin, Austin, Texas 78712, USA. andoni@mail.utexas.edu |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Acoustic Stimulation
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methods Action Potentials / physiology Animal Communication* Animals Auditory Pathways / physiology Auditory Perception / physiology Chiroptera / physiology Inferior Colliculi / cytology* Models, Neurological Motion* Neurons / physiology* Nonlinear Dynamics Predictive Value of Tests Sound Localization / physiology* Spectrum Analysis |
| Grant Support | |
ID/Acronym/Agency:
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DC007856/DC/NIDCD NIH HHS; R01 DC007856-03/DC/NIDCD NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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