Spatial- and temporal-frequency selectivity as a basis for velocity preference in cat striate cortex neurons.
Measurements were made of the optimal velocity for drifting bar-shaped stimuli to excite striate cortex neurons of the cat. These data were compared to the optimal spatial and temporal frequencies of the same neurons, as determined with drifting sine-wave grating stimuli. A systematic relationship was revealed, whereby those neurons preferring higher velocities of bar motion also preferred lower spatial and higher temporal frequencies of gratings. The optimal bar velocity for a given neuron could be quantitatively predicted from the ratio of that neuron's optimal temporal frequency to its optimal spatial frequency.
Baker
C L
CL
Department of Psychology, McGill University, Montreal, Quebec, Canada.
D000200:Action Potentials; D000818:Animals; D002415:Cats; D009039:Motion Perception / Q000502:physiology*; D009474:Neurons / Q000502:physiology*; D011930:Reaction Time; D012044:Regression Analysis; D013028:Space Perception / Q000502:physiology*; D014793:Visual Cortex / Q000166:cytology / Q000502:physiology*