At some time during his "outlaw" period, possibly under the influence of William Burroughs, Leary came to see Aleister Crowley as someone who had also pioneered experimentation on his own nervous system and as a predecessor. This seemed to result in a lot of telepathic communication with benevolent cosmic aliens and so on while he was in Vacaville prison. Again associated with the term "neuroscience" in the sense in which Leary latterly tended to use it. Leary was a fascinating chap and the world is a better place for having him in it, I have no doubt. But his use of the word "neuroscience" is often non-standard.