In the presence of prey, the marine mollusk Clione limacina exhibits search behavior, i.e., circular motions whose plane and radius change in a chaotic-like manner. We have formulated a dynamical model of the chaotic hunting behavior of Clione based on physiological in vivo and in vitro experiments. The model includes a description of the action of the cerebral hunting interneuron on the receptor neurons of the gravity sensory organ, the statocyst. A network of six receptor model neurons with Lotka–Volterra-type dynamics and nonsymmetric inhibitory interactions has no simple static attractors that correspond to winner take all phenomena. Instead, the winnerless competition induced by the hunting neuron displays hyperchaos with two positive Lyapunov exponents. The origin of the chaos is related to the interaction of two clusters of receptor neurons that are described with two heteroclinic loops in phase space. We hypothesize that the chaotic activity of the receptor neurons can drive the complex behavior of Clione observed during hunting.
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September 2002
Research Article|
September 01 2002
Winnerless competition between sensory neurons generates chaos: A possible mechanism for molluscan hunting behavior
Pablo Varona;
Pablo Varona
Institute for Nonlinear Science, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093-0402
Grupo de Neurocomputación Biológica (GNB), Dpto. de Ingenierı́a Informática, Universidad Autónoma de Madrid, 28049 Madrid, Spain
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Mikhail I. Rabinovich;
Mikhail I. Rabinovich
Institute for Nonlinear Science, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093-0402
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Allen I. Selverston;
Allen I. Selverston
Institute for Nonlinear Science, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093-0402
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Yuri I. Arshavsky
Yuri I. Arshavsky
Institute for Nonlinear Science, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093-0402
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Chaos 12, 672–677 (2002)
Article history
Received:
April 03 2002
Accepted:
June 12 2002
Citation
Pablo Varona, Mikhail I. Rabinovich, Allen I. Selverston, Yuri I. Arshavsky; Winnerless competition between sensory neurons generates chaos: A possible mechanism for molluscan hunting behavior. Chaos 1 September 2002; 12 (3): 672–677. https://doi.org/10.1063/1.1498155
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