Based on a reply that I got from a thread of which I made a while ago I now understand that the pressure point on the head is the place which controls all of one's martial arts. When attacked at that spot, one's martial arts would all be gone.
So what exactly happens when tapped at that spot? Does one's internal power be gone completely and he/she'll have to start all over? Or is it still there (just that he/she can't use it?).