[Directional selectivity of the neurons of the superior colliculi in the cat: the effect of the rate of movement of a stimulus].
Responses to stimuli moving with velocities of 3-180 degrees X sec-1 were studied in each of four axes (eight directions) separated by 45 degrees in neurons of the cat superior colliculus. 69% of units were directionally selective. In 55% of all the neurons the directional selectivity depended on stimulus velocity and was the largest for high velocities (over 10-30 degrees X sec-1). The preferred direction for some neurons was reversed with velocity increasing. The directional selectivity-velocity relationships were compared for the cat superior colliculus and visual cortex and discussed in regard to probable role of this phenomenon in the oculomotor system.
D000818:Animals; D002415:Cats; D005133:Eye Movements; D009039:Motion Perception / Q000502:physiology*; D009068:Movement; D009474:Neurons / Q000502:physiology*; D009949:Orientation / Q000502:physiology*; D010775:Photic Stimulation / Q000379:methods; D013477:Superior Colliculi / Q000502:physiology*
Direktsional'naia izbiratel'nost' neĭronov perednikh bugrov chetverokholmiia koshki: vliianie skorosti dvizheniia stimula.