| Dynamical characteristics common to neuronal competition models. | |
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MedLine Citation:
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PMID: 17065254 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Models implementing neuronal competition by reciprocally inhibitory populations are widely used to characterize bistable phenomena such as binocular rivalry. We find common dynamical behavior in several models of this general type, which differ in their architecture in the form of their gain functions, and in how they implement the slow process that underlies alternating dominance. We focus on examining the effect of the input strength on the rate (and existence) of oscillations. In spite of their differences, all considered models possess similar qualitative features, some of which we report here for the first time. Experimentally, dominance durations have been reported to decrease monotonically with increasing stimulus strength (such as Levelt's "Proposition IV"). The models predict this behavior; however, they also predict that at a lower range of input strength dominance durations increase with increasing stimulus strength. The nonmonotonic dependency of duration on stimulus strength is common to both deterministic and stochastic models. We conclude that additional experimental tests of Levelt's Proposition IV are needed to reconcile models and perception. |
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Authors:
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Asya Shpiro; Rodica Curtu; John Rinzel; Nava Rubin |
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Publication Detail:
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Type: Journal Article; Research Support, N.I.H., Extramural Date: 2006-10-25 |
Journal Detail:
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Title: Journal of neurophysiology Volume: 97 ISSN: 0022-3077 ISO Abbreviation: J. Neurophysiol. Publication Date: 2007 Jan |
Date Detail:
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Created Date: 2007-01-17 Completed Date: 2007-03-09 Revised Date: 2011-09-26 |
Medline Journal Info:
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Nlm Unique ID: 0375404 Medline TA: J Neurophysiol Country: United States |
Other Details:
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Languages: eng Pagination: 462-73 Citation Subset: IM |
Affiliation:
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Center for Neural Science, New York University, 4 Washington Place, New York, NY 10003, USA. avs203@nyu.edu |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Action Potentials
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physiology Animals Artifacts Biological Clocks / physiology* Brain / physiology* Feedback / physiology Humans Neural Inhibition / physiology* Neural Networks (Computer) Neural Pathways / physiology* Neurons / physiology* Synaptic Transmission / physiology Vision, Binocular / physiology* |
| Grant Support | |
ID/Acronym/Agency:
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EY 07158-03/EY/NEI NIH HHS; EY 14030/EY/NEI NIH HHS; R01 EY014030-03/EY/NEI NIH HHS |
| Comments/Corrections | |
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