Intracortical evoked potentials of cats elicited by punctate visual stimuli in receptive field peripheries.
Intracortical visual evoked potentials, related to stimulus eccentricity from receptive field center, were investigated as a possible measure of interaction among adjacent populations of cortical neurons. Displacement of the stimuli from field center resulted in (1) a progressive decline in amplitude of the primary potential and (2) an enhancement or development of longer latency (60-100 ms) 'secondary' potentials often not apparent with field center stimulation.
D000818:Animals; D002415:Cats; D005074:Evoked Potentials, Visual; D010775:Photic Stimulation; D014793:Visual Cortex / Q000502:physiology*; D014794:Visual Fields; D014795:Visual Pathways / Q000502:physiology; D014796:Visual Perception / Q000502:physiology*