Some temporal output properties of color opponent units in the ground squirrel retina.
Responses of BG-G units to equal energy stimuli of different wavelengths reveal a tonic to phasic pattern of responses in which short wavelengths (blue) evoke tonic activity, medium wavelengths (green to yellow) evoke phasic activity and intermediate wavelengths evoke in-between patterns. The patterns correlate with wavelength but are relatively insensitive to intensity. Output patterns of BG-G cells to white and to monochromatic light at the animal's neutral point are almost identical, and the pattern identities may be a neural correlate to the behavioral phenomenon of the neutral point.
D000818:Animals; D003118:Color Perception / Q000502:physiology*; D005071:Evoked Potentials; D009474:Neurons / Q000502:physiology; D010775:Photic Stimulation; D012160:Retina / Q000502:physiology*; D012589:Sciuridae; D012684:Sensory Thresholds