Experiment to measure latency to onset of pupil contraction as function of size of positive steps in luminance, starting at various levels of eye adaptation prior to stimulus steps; latency was primarily function of luminance during step and secondarily ratio of step change of luminance to adaptation luminance.
CITATION STYLE
LEE RE, COHEN GH, & BOYNTON RM. (1969). LATENCY VARIATION IN HUMAN PUPIL CONTRACTION DUE TO STIMULUS LUMINANCE AND/OR ADAPTATION LEVEL. Optical Soc America-J, 59(1), 97–103. https://doi.org/10.1364/josa.59.000097
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