Research on psychedelics as part of the neuroscience of psychoanalysis and psychotherapy is not new, but activity seems to be growing in this space again. Four blog links here from a couple of months ago, that bring a number of threads into one place.
Neurocritic, Neuroskeptic, Minds-Hacks,
and a potted summary from Neurophilosophy.
Plus the Shulgin (Erowid) PiKHaL and TiKHaL references.
Interesting reading whatever your perspective.