ON THE INFLUENCE OF THE SHAPE OF EQUAL ENERGY LIGHT PULSES ON THE CRITICAL FLICKER FREQUENCY

摘要

The authors investigate the variation of the critical flicker frequency as a function of the shape of the light pulses in different retinal locations. The predominance of the saw-tooth stimuli with respect to rectangular stimuli of equal energy is tested in extrafoveal vision, while in foveal vision the critical conditions do not depend on the shape of the-light stimuli, in agreement with the classical assumptions.nThe effect is remarkable when white or green sti¬muli are used, but disappears when red or blue-violet stimu li are used.