Abstract
The study is a comparison of the major sensory phenomena that emerge as flicker frequency is varied from c.f.f. down to the rate at which the flashes and dark intervals are seen as distinct entities. The conditions include both illuminated and dark grounds and small and large test objects. The Brucke phenomenon does not emerge when an illuminated ground is used. True glitter does not appear without an illuminated ground. The flash rates bounding the glitter range vary with intensity. The dependence of contour upon spatial-temporal factors of stimulation is discussed.

This publication has 3 references indexed in Scilit: