Neuro-research in general is a fascinating subject, not least because it often necessitates rethinking all kinds of assumptions about subjectivity.
Your reflections on your own experience is interesting and I would have launched into a description of some my own, I've never done any hallucinogens but have some experience with other things, had I not read this the exact same day I first started reading your MAD post:
"Vancouver psychotherapist Andrew Feldmar has been barred from entering the United States. The reason? During a random stop-and-search at a US/Canadian border crossing, a Google search of his name led to his article from the Spring 2001 'Janus Head: Journal of Interdisciplinary Studies in Literature, Continental Philosophy, Phenomenological Psychology, and the Arts.' In it Feldmar describes two acid trips he took under the supervision of his graduate advisor in psychology -- in 1967. This turns out to have been enough to earn him a life-time ban under the grounds of 'admitted drug use.'
"Feldmar *was* told he could apply for a waiver, and that after a year, and at a cost of around $3,500, he had a '90% chance' of its being granted.
"Oh -- and he'd have to go through the process each time he wanted to travel to the US."
The official said that under the Homeland Security Act, Feldmar was being denied entry due to "narcotics" use. LSD is not a narcotic substance, Feldmar tried to explain, but an entheogen. The guard wasn't interested in technicalities. He asked for a statement from Feldmar admitting to having used LSD and he fingerprinted Feldmar for an FBI file."
I ran across the story on BoingBoing, but you can read Feldman's own take on this very very very scary development here:
http://thetyee.ca/News/2007/04/23/Feldmar/
I think its that this started with a quick Google is what disturbs me most...
From the Ernest L. Wilkinson Diaries: "ELW dreams he's spattered w/ grease. Hundreds steal his greasy pants."