Diurnal pattern of luminance discrimination in humans.
The visual discrimination threshold can be considered as an image of the resolution power of the visual system. Measured with a psychophysical method, it shows a diurnal pattern with a low threshold in the morning, i.e., high sensitivity and an increase in the afternoon that persists until the early evening.
Tassi
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Centre d'Etudes de Physiologie Appliquée, Strasbourg, France.
Pellerin
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Muzet
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D000328:Adult; D000704:Analysis of Variance; D002940:Circadian Rhythm; D004056:Differential Threshold; D004192:Discrimination, Psychological; D006801:Humans; D008027:Light; D010775:Photic Stimulation; D012684:Sensory Thresholds; D017603:Signal Detection, Psychological; D014796:Visual Perception