A neural model of interactions subserving prey-predator discrimination and size preference in anuran amphibia |
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| Authors: | F Cervantes-Pérez R Lara M Arbib |
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| Institution: | Centro de Investigaciones en Fisiología Celular, Universidad Nacional Autónoma de México, México, D.F. 04510;Center for Systems Neuroscience, Department of Computer and Information Science, University of Massachusetts, Amherst, Massachusetts 01003, U.S.A. |
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| Abstract: | The model described is an extension of a previous model of the optic tectum (Arbib & Lara, 1982; Lara, Arbib & Cromarty, 1982; Lara & Arbib, 1982) and takes into consideration anatomical, physiological and behavioral studies in anurans, as well as earlier modelling efforts (Ewert & Von Seelen, 1974; Didday, 1976). Computer simulations were conducted to analyze how interactions among retina, optic tectum and pretectum may give frogs and toads the ability to discriminate between prey and predator stimuli. Results from simulations have allowed us to reproduce empirical observations, to suggest new experiments, and to postulate what neural mechanisms might be involved in some phenomena related to prey-catching orienting behavior, with direction invariance of prey-predator recognition being a consequence of tectal architecture, and size preference and response latency depending on the motivational state of the animal. |
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| Keywords: | To whom correspondence should be addressed On leave at Department of Computer and Information Science University of Massachusetts Amherst Massachusetts 01003 |
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