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Journal of Experimental Biology, Vol 202, Issue 10 1281-1289, Copyright © 1999 by Company of Biologists

JOURNAL ARTICLES

Mechanisms for generating temporal filters in the electrosensory system

GJ Rose and ES Fortune
Department of Biology, University of Utah, Salt Lake City, UT 84112, USA. gary.rose@m.cc.utah.edu

Temporal patterns of sensory information are important cues in behaviors ranging from spatial analyses to communication. Neural representations of the temporal structure of sensory signals include fluctuations in the discharge rate of neurons over time (peripheral nervous system) and the differential level of activity in neurons tuned to particular temporal features (temporal filters in the central nervous system). This paper presents our current understanding of the mechanisms responsible for the transformations between these representations in electric fish of the genus Eigenmannia. The roles of passive and active membrane properties of neurons, and frequency-dependent gain-control mechanisms are discussed.


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© The Company of Biologists Ltd 1999