Closed-eye hallucination
Class of hallucination / From Wikipedia, the free encyclopedia
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"Visual snow" and "Seeing snow" redirect here. For the neurological condition, see Visual snow syndrome. For the display of noise in an analog video signal, see Noise (video). For the related phenomenon known as seeing stars, see Phosphene.
Closed-eye hallucinations and closed-eye visualizations (CEV) are hallucinations that occur when one's eyes are closed or when one is in a darkened room. They should not be confused with phosphenes, perceived light and shapes when pressure is applied to the eye's retina, or some other non-visual external cause stimulates the eye. Some people report CEV under the influence of psychedelics; these are reportedly of a different nature than the "open-eye" hallucinations of the same compounds. Similar hallucinations that occur due to loss of vision are called "visual release hallucinations".
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