Quantum efficiency of dark-adapted human vision.
In the classic frequency-of-seeing experiment with a small brief stimulus, the overall efficiency F is 0.06 (lambda = 507 nm) in conventional long experiments and 0.09 in pooled short experiments. These results can be reconciled by postulating higher-level effects in the long experiments, which increase variability without substantially changing mean threshold. The quantum efficiency of dark-adapted vision Fd, the fraction of corneal photons acting at the decision level, is estimated to be 0.13-0.20 (maximum range, 0.12-0.30).
Department of Physiology, University of Toronto, Ontario, Canada.
P E
PE
Hallett
D003623:Dark Adaptation; D006801:Humans; D008960:Models, Psychological; D010775:Photic Stimulation; D014785:Vision, Ocular / Q000502:physiology*