bhante, I wasn't referring to the five faculties, as in pa~n~naa, samaadhi, sati, viriya and saddhaa. I was merely referring to biological functions of the body in relation to the brain.
There are many grounds to be covered and uncovered for this topic, and the discussion can get lengthy and messy, probably heaty too. I hoped the topic can inspire some thinking into Buddhist concepts, not so much about scientific research and findings. So, maybe we'll just leave it here for now.