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A neural model of the interaction of tectal columns in prey-catching behavior

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Abstract

Building on a simple model of a tectal column as the unit of processing in the amphibian tectum, we conduct a computer analysis of the interaction of a linear array of such columns. The model suggests that the inhibitory and excitatory activity in the tectum may have three functions: 1) spatiotemporal facilitation of column activity to a moving stimulus; 2) preference for the head of the stimulus, probably to avoid possible defensive reactions of the prey; and 3) modulating the state of excitation of the column once it has produced a response. The model also shows that the spatio-temporal effects of excitation and inhibition increases the acuity of the animal to the direction of the prey, through processes similar to lateral inhibition.

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The search reported in this paper was supported in part by NIH grant NS14971-02. Our thanks to Peter Ewert and David Ingle for valuable discussions of the experimental data; and to Andrew Cromarty and Donald House for their help with the computer implementation

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Arbib, M.A., Lara, R. A neural model of the interaction of tectal columns in prey-catching behavior. Biol. Cybern. 44, 185–196 (1982). https://doi.org/10.1007/BF00344274

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