deception, neuropsychiatry, tells..

really wonder if a systematic approach to reading a fellow human for deception: zygomatic muscle contractions.., saccadic gaze...pupil response..voice tone analysis..etc. is something to be pursued...more info coming out with better non-invasive neuroimaging techniques available....it seems card reading is the holy grail to better card play....just an idea...gl

How many of these things can be applied at the poker table? What's saccadic gaze or zygomatic muscle contraction? Seen some voice stress analysis stuff. I'm skeptical, but it works sometimes. Some refuse to talk during a hand for this reason.