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Rhythmogenesis, Amplitude Modulation, and Multiplexing in a Cortical Architecture
Nancy Kopell and Gwendal LeMasson
Proceedings of the National Academy of Sciences of the United States of America
Vol. 91, No. 22 (Oct. 25, 1994), pp. 10586-10590
Published by: National Academy of Sciences
Stable URL: http://www.jstor.org/stable/2366074
Page Count: 5
You can always find the topics here!Topics: Neurons, Time constants, Simulations, Population dynamics, Thalamus, Kinetics, Synapses, Electric potential, Neuroscience, Neurobiology
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In a network of excitatory and inhibitory neurons, hyperpolarization-activated inward currents can help to produce population rhythms in which individual cells participate sparsely and randomly. A shift in the activation curve of such a current changes the fraction of the cells participating in any given cycle of the population rhythm, thus changing the amplitude of the field potential. Furthermore, the frequency of the population rhythm remains relatively fixed over a substantial range of amplitudes, allowing the population rhythm to play a separate processing role from that of the individual components.
Proceedings of the National Academy of Sciences of the United States of America © 1994 National Academy of Sciences