I sent Cody an email and a few days later he left a message for me on my answering machine. Said he'd call back but I haven't heard from him.
NST is well known among neonates and people who are cold acclimatized. Not sure about acclimation though in humans. Most of the research on that is pretty old. Most of the work on NST has been done on rats, mice, hamsters, and voles. Is there something specific you are intersted in? I have tons of papers on NST.
. . . deliverance will not come from the rushing, noisy centres of civilization. It will come from the lonely places. - Fridtjof Nansen