Abstract

The character of spike responses of receptor neurons of n. telsoni ventralis to changes in the direction, velocity, and angle of displacement of the uropod hairs was studied in experiments onAstacus leptodactylus. For all receptor neurons the latent period is inversely proportional and the mean impulse frequency directly proportional to the velocity of hair displacement. Selective sensitivity of different receptor neurons to the direction of motion and also to a change in the angle of displacement of the hair was discovered; certain zones of angular displacements of the hair characterized by a maximal response of the receptor neuron were distinguished.

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