PMID: 9427119Jan 14, 1998Paper

Low-dimensional dynamics in sensory biology. 1: Thermally sensitive electroreceptors of the catfish

Journal of Computational Neuroscience
H A BraunF Moss

Abstract

We report the results of a search for evidence of periodic unstable orbits in the electroreceptors of the catfish. The function of these receptor organs is to sense weak external electric fields. In addition, they respond to the ambient temperature and to the ionic composition of the water. These quantities are encoded by receptors that make use of an internal oscillator operating at the level of the membrane potential. If such oscillators have three or more degrees of freedom, and at least one of which also exhibits a nonlinearity, they are potentially capable of chaotic dynamics. By detecting the existence of stable and unstable periodic orbits, we demonstrate bifurcations between noisy stable and chaotic behavior using the ambient temperature as a parameter. We suggest that the technique developed herein be regarded as an additional tool for the analysis of data in sensory biology and thus can be potentially useful in studies of functional responses to external stimuli. We speculate that the appearance of unstable orbits may be indicative of a state of heightened sensory awareness by the animal.

Citations

Jun 26, 1999·The European Journal of Neuroscience·J L VelazquezR Wennberg
Jun 11, 2004·Chaos·Jose L Perez Velazquez, Houman Khosravani
Oct 1, 2006·Journal of Biological Physics·Milan MajtanikPeter A Tass
Jul 25, 2000·Neural Computation·P RoperA Longtin
Jun 5, 2003·Chaos·R. GilmoreFrank Moss
Nov 30, 2018·Cognitive Neurodynamics·Fatemeh ParasteshViet-Thanh Pham
Nov 6, 2018·Chaos·Vera BettenworthBruno Eckhardt
Jan 10, 2012·Chaos·Sonya BaharKenneth Showalter
Oct 14, 2000·Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics·L OmbergF Moss
Jan 10, 2012·Chaos·Alexander B Neiman, David F Russell
Dec 2, 2000·Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics·W BraunM Huber
Apr 24, 2002·Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics·K DolanF Moss
Jun 13, 2002·Physical Review Letters·Changsong Zhou, Jürgen Kurths
Aug 11, 2001·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·K T Dolan
May 23, 2006·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Yubing GongHouwen Xin
Feb 17, 2000·Trends in Neurosciences·J A WhiteA R Kay

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