PMID: 11324342Apr 28, 2001Paper

Variability of the electric organ discharge interval duration in resting Gymnotus carapo

Biological cybernetics
Alberto CapurroKhashayar Pakdaman

Abstract

We recorded the electric organ discharges of resting Gymnotus carapo specimens. We analyzed the time series formed by the sequence of interdischarge intervals. Nonlinear prediction, false nearest neighbor analyses, and comparison between the performance of nonlinear and linear autoregressive models fitted to the data indicated that nonlinear correlations between intervals were absent, or were present to a minor extent only. Following these analyses, we showed that linear autoregressive models with combined Gaussian and shot noise reproduced the variability and correlations of the resting discharge pattern. We discuss the implications of our findings for the mechanisms underlying the timing of electric organ discharge generation. We also argue that autoregressive models can be used to evaluate the changes arising during a wide variety of behaviors, such as the modification in the discharge intervals during interaction between fish pairs.

Citations

Nov 6, 2010·Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology·Laura QuintanaOmar Macadar
Jun 24, 2004·Bulletin of Mathematical Biology·Alberto Capurro, C P Malta
Jul 27, 2011·PloS One·Javier Nogueira, Ángel Ariel Caputi

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