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Visual allesthesia: looking through a negative prism? A review


Journal of Neurology & Stroke
Allan J Drapkin MD, FACS(R)

Abstract

Visual Allesthesia is a rare misperception consisting of the visualization of an object, briefly exposed to view, whose resulting image is seen in one hemifield of vision while a duplicated image is viewed simultaneously in the opposite visual hemifield. It is the result of diverse medical or surgical conditions that cause disruption of the ventral visual stream. Surgical procedures that cause damage of that area should be avoided.

Keywords

misperception, stroke, epilepsy, release phenomenon, visual processing

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