How much of what you see is a hallucination? – Elizabeth Cox

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A condition called Charles Bonnet Syndrome can cause blind patients to hallucinate scenes in vivid color. fMRI studies show that these hallucinations activate the same brain areas as sight — areas that are not activated by imagination. Other hallucinations also involve the same brain areas as real sensory experiences. What’s going on? Elizabeth Cox details the science of hallucinations.

Lesson by Elizabeth Cox, directed by Nerdo.

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