Correspondence between Stevens' terminal brightness function and the discriminability law.
Stevens' terminal brightness function, an adaptation curve derived from power law data, closely agrees with Troland's just-noticeable-difference (jnd) summation for brightness. The power law itself describes sensation magnitude before adaptation to a test stimulus, whereas the Fechnerian discriminability law describes sensation magnitude after adaptation. This suggests their synthesis in a more general psychophysical equation.
D000064:Acclimatization; D000222:Adaptation, Physiological; D006801:Humans; D011601:Psychophysics; D011603:Psychophysiology; D012677:Sensation; D014796:Visual Perception
PSYCHOPHYSIOLOGY; VISUAL PERCEPTION