Consciousness in dreamless sleep

In the following video Thompson describes around 37:00 what that consciousness is like as reported by both advanced meditators and non-meditators. The former see it as a luminous, non-dual awareness; the latter as a dark, non-dual awareness. Which reminds me of this meditation.

At around 43:00 he thinks this state, in contradistinction with Vedanta, is "the sentient aliveness with the body," "a basal biological phenomenon." Vedanta sees it as the transcendental witness. See earlier in this thread, with links to the "states" thread.

Also see this IPS discussion thread on this work.