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phosphene

n. a sensation of a light flash (as in “seeing stars”) in the absence of actual light stimulation to the eye. It may occur with the eyes closed and can be caused by mechanical stimulation of the retina, by rubbing the eyes, or by direct stimulation of the visual cortex. Also called visual phosphene. See also photopsia.

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Psychology term of the day

November 22nd 2024

ventriculoatrial shunt

ventriculoatrial shunt

see shunt.