Abnormal transient response, normal time course of the receptor potential.
Fixation defective; isolated on basis of poor orientation to spots in a Y-maze test and originally designated nofC mutations (Bulthoff, 1982). Exhibit defective visual response in a freely walking test. ERG's light sensitivity severely reduced and there are no light-on or light-off transient spikes. very small (<3mV) ERG, even with high intensity stimuli
Bulthoff.