Does the random distribution of discrete photoreceptor events limit the sensitivity of the retina?
D000818:Animals; D002024:Bufo marinus; D008564:Membrane Potentials; D008954:Models, Biological; D010775:Photic Stimulation; D010786:Photoreceptor Cells / Q000502:physiology*; D011896:Rana temporaria; D012160:Retina / Q000166:cytology / Q000502:physiology*; D012165:Retinal Ganglion Cells / Q000502:physiology; D012684:Sensory Thresholds; D009435:Synaptic Transmission