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Proceedings Paper

Oscillations, noise, and extended negative correlations in electroreceptors
Author(s): David Frank Russell; Alexander B. Neiman
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Paper Abstract

We demonstrate the existence of two types of oscillators embedded in the electroreceptor system of paddlefish. The first type of oscillator is represented by the collective activity of hundreds of epithelial cells. It produces stochastic oscillations with a well-expressed peak in the power spectrum at approx. 25 Hz. The second oscillator resides in the afferent terminals and is driven by the first, epithelial oscillations. We show that the existence of the epithelial oscillation leads to two main effects. On the one hand, it busts variability of afferent firing, expressed as an increase of the coefficient of variation of interspike intervals. On the other hand, however, the epithelial oscillations involve additional degree of ordering expressed in the extended negative correlations between sequential interspike intervals. We discuss implications of extended negative correlations on the performance of electroreceptors.

Paper Details

Date Published: 30 April 2003
PDF: 8 pages
Proc. SPIE 5110, Fluctuations and Noise in Biological, Biophysical, and Biomedical Systems, (30 April 2003);
Show Author Affiliations
David Frank Russell, Univ. of Missouri/St. Louis (United States)
Alexander B. Neiman, Univ. of Missouri/St. Louis (United States)

Published in SPIE Proceedings Vol. 5110:
Fluctuations and Noise in Biological, Biophysical, and Biomedical Systems
Sergey M. Bezrukov; Hans Frauenfelder; Frank Moss, Editor(s)

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