[Detector neurons of the visual cortex of the chipmunk].
Three functional classes of neurons are described in the Siberian chipmunk visual cortex: neurons nonselective to movement direction, movement-direction-selective neurons and orientation-selective neurons. Nonselective and direction-selective neurons showed maximum adaptiveness at high speeds of movement: 100-500 degrees/s and more. Most of orientation-selective neurons were maximally activated at speeds 10-50 degrees/s. For all neuronal classes a clear-cut correlation between selectivity and movement speed as well as pattern of responses to stationary stimuli in the receptive field were found. The data obtained allowed a division of the neurons into two groups: phasically-fast and tonically-slow with predominance of the first group.
D000818:Animals; D005556:Form Perception / Q000502:physiology; D009039:Motion Perception / Q000502:physiology; D009474:Neurons / Q000502:physiology; D009949:Orientation / Q000502:physiology; D012589:Sciuridae / Q000502:physiology*; D014793:Visual Cortex / Q000166:cytology / Q000502:physiology*; D014796:Visual Perception / Q000502:physiology*
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