Changes of brightness sensation (fading) that occur when images are stabilized on the retina were measured with a matching technique. Increment thresholds were measured under the same conditions. Under stabilization, the increment threshold is proportional to stimulus level (Weber’s law). Increment thresholds change at a different rate than does brightness; this suggests that these mechanisms behave independently.
© 1969 Optical Society of AmericaFull Article | PDF Article
Holger Knau and Lothar Spillmann
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