The single directional twitchs (side to side or up and down) are short ranged.
As for the rotational twitches, sometimes the range is pretty far. To clarify, the rotational twitches are the 'turning of the head twitches' (which would be turning in the way that a dog would turn it's head when confused, with my face turning counter-clockwise from a viewers perspective). I'd say they can be sometimes as far as 45-70 degrees turns. also, I don't know if this helps, but these rotational twitches don't seem to be as jerky as the single directional twitches. The motion seems to be a little bit "smoother."