I had read some of that thread, and just went and made a point of reading any comments by kalla724 that I had missed. Actually, I had them in mind when I made this thread - hoping that $500 could induce a neuroscientist to write the post kalla724 mentioned (but as far as I can tell never wrote), or or else be willing to spend a few hours fielding questions from me about cryonics. I considered PMing kalla724 directly, but they don't seem to have participated in LW in some time.

Edit: PM'd kalla724. Don't expect a response, but seemed worth the 10 seconds on that off-chance.