[The effect of external stimuli on movement of Asterias amurensis starfish].
Studies have been made on local and total motor reactions of the starfish to stimuli of different modalities. It is suggested that differences in the pattern  of papillae excitation and those in total reactions to salt, mechanical stimulation and changes in the intensity of illumination are associated with structural and functional heterogeneity of receptors and afferent pathways in the lower regular layer of the nervous plexus. The ability of segment motoneurons to change the direction of tube feet movement in absence of influences from the nervous ring was demonstrated. Possible scheme of control of pedicellar movement evoked by external stimulation is discussed.
D000818:Animals; D008027:Light; D009043:Motor Activity / Q000187:drug effects; D009424:Nervous System Physiological Phenomena; D010812:Physical Stimulation; D012965:Sodium Chloride / Q000494:pharmacology; D013215:Starfish / Q000502:physiology*
D012965:Sodium Chloride
Vliianie vneshnikh vozdeĭstvii na dvizheniia morskoĭ zvezdy Asterias amurensis