So when we take psychedelics we are, it could be said, replacing one illusion by another illusion. Take vision, for example: "We know that the brain fills in visual information when suddenly missing, that veins in front of the retina are filtered out and not perceived, and that the brain stabilizes our visual perception in spite of constant eye movements. ![]() But the reality we experience during ordinary wakefulness is also, to a large extent, an illusion." "Psychedelic drugs can distort our reality and result in perceptual illusions. "There is 'objective reality' and then there is 'our reality,'" says Enzo Tagliazucchi of the Royal Netherlands Academy of Arts and Sciences in Amsterdam. ![]() They can also provide intriguing biological insight into philosophical questions about the very nature of reality, the researchers say. ![]() ![]() The findings suggest that studies of LSD and other psychedelic drugs can produce important insights into the brain. As researchers report in the Cell Press journal Current Biology on April 13, these images suggest that ego dissolution occurs as regions of the brain involved in higher cognition become heavily over-connected.
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