I’ve just found a remarkable 1963 study [pdf] from the Archives of Opthalmology in which 24 blind participants took LSD to see if they could experience visual hallucinations. It turns out, they can, although this seems largely to be the case in blind people who had several years of sight to begin with, but who later lost their vision.
The drug LSD has always been infamously linked to bright, swirling colors, and the strangest of hallucinations. As such, it has been the subject of a lot of scientific research, particularly in the 1950s when there was still a lot to learn about the drug. In fact, between 1950 and the mid-1960s, over 1,000
Scientists have scanned the brains of people under the effects of LSD and discovered that it causes the brain to function in a less compartmentalized fashion and more like that of a baby’s. The research team at Imperial College London explained that while our brains usually function through various independent networks that all perform separate