Cool, I'm excited about it too... I just hope I can get a reasonable number of participants (although even with just data from me, interesting questions should be able to be addressed). Brilliant, thanks! Willing control participants are helpful indeed (although I do need some DiPTers (or, I guess, 4-HO/AcO-DiPTers or 5-MeO-DiPTers) too ). Also, before I start the experiment proper, I need to find out whether people are generally good enough at identifying pitches to be able to do the experiment; or whether I need to find another method of testing pitch perception. So I'll be wanting to get a few people (not on DiPT) to try that initial testing program out first anyway. I've made a draft version of the program, and posted it on bluelight recently; but am working on an improved version (the sound was a bit iffy) which I'll post a link to here and at bluelight in the next couple of days. Ah, I see, thanks! I'll endeavour to post some more, then. @sdng 260 mg, wow, I'd be most interested to hear about the nature of that experience.