Phosphenes definitions and example sentences on Wordnik

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The phosphenes, or circles of light which are seen when the hinder part of the eyeball is pressed, may be said to be illusory in so far as we speak of them as perceptions of light, thus referring them to the external physical agency which usually causes them.

—Illusions A Psychological Study

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Examples (13)

The boundaries of two monocular fields mapped by apparent locations of pressure phosphenes agreed with the boundary of the area in which facial vision is experienced. — CiteULike: Everyone's library
Only those stimulation sites were investigated where phosphenes were restricted to one visual hemifield. — CiteULike: Everyone's library
Threshold values normalized to the square root of the stored energy in the stimulators were lower with the Medtronic-Dantec device than with the Magstim device. fMRI revealed that stimulation sites generating unilateral phosphenes were situated at V2 and V3. — CiteULike: Everyone's library
Stimulation over V1 yields phosphenes in both visual fields. — CiteULike: Everyone's library
Although the coil positions used in this study were centered over visual areas V2 and V3, we cannot rule out the possibility that subcortical structures or V1 could actually be the main generator for phosphenes. — CiteULike: Everyone's library