It is possible to perform a Vulcan nerve pinch. You first need to locate your opponent's radial nerve which is just on top of the forehead or below the elbow joint. Press your thumb or knuckle into the radial nerve. By activating the radial nerve, you can temporarily paralyze your opponent's arm to give you time for the next step, activating the brachial plexus tie-in. check out http://www.ehow.com/how_2096236_perform-vulcan-nerve-pinch.html#page=2.