Volume 56, Number 3, November 2001
|Page(s)||454 - 460|
|Section||Interdisciplinary physics and related areas of science and technology|
|Published online||01 December 2003|
Long-range temporal anti-correlations in paddlefish electroreceptors
Center for Neurodynamics, University of Missouri -
St. Louis, MO 63121, USA
2 Institut für Theoretische Physik III, Justus-Liebig-Universität D-35392 Giessen, Germany
3 Dipartimento de Fisica, Universidade Federal do Rio Grande de Norte 59072-970 Natal, Brazil
Accepted: 15 August 2001
The paddlefish perceives its world through an array of electroreceptor organs spread over its rostrum. Using Detrended-Fluctuation Analysis (DFA) we find long-range anti-correlations in sequences of time intervals between neural action potentials recorded from spontaneously firing electroreceptor afferents. In contrast, spontaneous discharges from mechanoreceptor afferents in the crayfish tailfan lack long-range correlations altogether. We interpret this finding as a consequence of the self-sustained oscillatory nature of the electroreceptor organ compared with the threshold-type dynamics of the mechanoreceptor.
PACS: 87.19.Nn – Properties of higher organisms: Electrophysiology / 05.40.-a – Fluctuation phenomena, random processes, noise, and Brownian motion / 87.17.Nn – Electrophysiology of nerve cells
© EDP Sciences, 2001
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