Proximal negative response in the pigeon retina.
1. The proximal negative response (PNR) of the inner plexiform layer of the pigeon retina was recorded intraretinally.2. The PNR can be distinguished from the local b-wave by its area dependence, and its depth profile in the retina.3. The ;on' and ;off' transients of the PNR have differing depth profiles in the retina: the ;on' transient is distributed vitreal to the ;off', and both are distributed vitreal to the b-wave.4. As spot diameter is increased, so the amplitude of the PNR decreases, and the threshold rises.5. Ganglion cells fire at ;on' and ;off' during the PNR and like the PNR, are suppressed as spot size is increased.
D000200:Action Potentials; D000818:Animals; D010856:Columbidae; D004594:Electrophysiology; D004596:Electroretinography; D009474:Neurons / Q000502:physiology; D012160:Retina / Q000502:physiology*; D014794:Visual Fields