theconversation.co &
uk.news.yahoo:
From Jan E. Purkinje’s documentation of the subjective visual phenomena he saw when he waved his hand in front of his closed eyes. Author provided: see https://uk.news.yahoo.com/manipulating-light-induce-psychedelic-experiences-090946328.html
read the post here:
https://theconversation.com/manipulating-light-can-induce-psychedelic-experiences-and-scientists-arent-quite-sure-why-192885
& here:
https://uk.news.yahoo.com/manipulating-light-induce-psychedelic-experiences-090946328.html
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