title: Locomotion: control by positive-feedback optokinetic responses.
abstract: 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.
mesh_terms: D000818:Animals; D003400:Astacoidea; D003058:Cockroaches; D005246:Feedback; D006110:Grasshoppers; D007103:Immobilization; D007313:Insecta; D008027:Light; D008124:Locomotion; D008121:Nephropidae; D010775:Photic Stimulation