AANS Neurosurgeon | Volume 26, Number 2, 2017

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Some Brains are Blind to Moving Objects

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As many as half of people are blind to motion in some part of their field of vision, but the deficit doesn’t have anything to do with the eyes.

In a study published Sept. 28 in the journal Psychological Science, University of Wisconsin–Madison psychology Professor Bas Rokers and collaborators in the Netherlands have shown that motion blindness is a failure of the brain to properly interpret sensory information — a type of deficit called agnosia.

The best-known example of an agnosia is probably face blindness, called prosopagnosia, in which people can’t tell one face from another (and thus can’t tell people apart without other clues).

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