Locomotion: Control by Positive-Feedback Optokinetic Responses

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Science  14 Jul 1972:
Vol. 177, Issue 4044, pp. 183-185
DOI: 10.1126/science.177.4044.183


Several species of arthropods perform forward locomotory movements when restrained in place and exposed to a pattern of stripes moving backward at normal locomotory velocities. Locomotory effort varies directly with stripe velocity. In nature such locomotory reactions would increase the visual stimulus that elicits them; hence, the reactions represent a new class of optokinetic responses employing positive visual feedback. Stabilizing mechanisms include response decrement during constant stripe velocities.