It's well-known that psychedelics can provoke hallucinations. Scientists have spent over a century investigating this chemical reaction and its potential insight into the brain’s circuitry.
Now, a possible explanation is emerging and it has to do with evolution. Hallucinogens, such as LSD, seem to disrupt filtering mechanisms that the brain implements, which can produce random signals to be amplified. The science is fascinating and tells us a great deal about the human brain.
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