NDLI: Intermittent chaos, self-organization, and learning from synchronous synaptic activity in model neuron networks.

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T-cell interleukin 1 receptor cDNA expressed in Chinese hamster ovary cells regulates functional responses to interleukin 1.

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Intermittent chaos, self-organization, and learning from synchronous synaptic activity in model neuron networks.

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Specific photoaffinity labeling of two plasma membrane polypeptides with an azido auxin.

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Intermittent chaos, self-organization, and learning from synchronous synaptic activity in model neuron networks.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Hoppensteadt, F. C.
Description	Author Affiliation: Hoppensteadt FC ( Department of Mathematics, Michigan State University, East Lansing 48823.);
Abstract	Self-organization of frequencies is studied by using model neurons called VCONs (voltage-controlled oscillator neuron models). These models give direct access to frequency information, in contrast to all-or-none neuron models, and they generate voltage spikes that phase-lock to oscillatory stimulation, similar to phase-locking of action potentials to oscillatory voltage stimulation observed in Hodgkin-Huxley preparations of squid axons. The rotation vector method is described and used to study how networks synchronize, even in the presence of noise or when damaged; the entropy of ratios of phases is used to construct an energy function that characterizes organized behavior. Computer simulations show that rotation numbers (output frequency/input frequency) describe both chaotic and nonchaotic behavior. Learning occurs when synaptic connections strengthen in response to stimulation that is synchronous with cell activity. It is shown that intermittent chaotic firing is suppressed and simple stable responses are enhanced by such learning in VCON networks. This analysis provides a rigorous basis for further investigation of the ideas of Wiener [Wiener, N. (1961) Cybernetics (MIT Press, Cambridge, MA), p. 191] on the origin of slow brain waves due to 'the pulling together of frequencies.'
ISSN	00278424
e-ISSN	10916490
Journal	Proceedings of the National Academy of Sciences of the United States of America
Issue Number	9
Volume Number	86
Language	English
Publisher	National Academy of Sciences
Publisher Date	1989-06-01
Publisher Place	United States
Access Restriction	Open
Subject Keyword	Models, Biological Neurons Physiology Synapses Action Potentials Computer Simulation Electrophysiology Mathematics Research Support, U.S. Gov't, Non-P.H.S. Multidisciplinary
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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