The relation of flash intensity and background illumination to the photic evoked potential in the pigeon's optic tectum.
D000703:Analog-Digital Conversion; D000818:Animals; D010856:Columbidae / Q000502:physiology*; D003201:Computers; D004106:Dilatation; D005071:Evoked Potentials; D008027:Light; D008297:Male; D010775:Photic Stimulation; D010783:Photometry; D011680:Pupil / Q000502:physiology; D013477:Superior Colliculi / Q000502:physiology*; D013997:Time Factors