This Week: and lots more… A paper in Nature Neuroscience caused quite a stir last week. A group of researchers at University of Helsinki claim that LSD and psilocin “directly bind to TrkB with affinities 1,000-fold higher than those for other antidepressants”, binding to “distinct but partially overlapping sites within the transmembrane domain of TrkB dimers.”TrkB is the receptor for brain-derived…