This subject generated a larger potential with downward gaze than with upward gaze. Even with the most extreme upward gaze of which he was capable, the response was only about 20% larger than that shown in Fig. 4 (downward deflections). It is therefore of some interest that his blink response was also small in absolute amplitude and correlated somewhat more closely with upward movements (r=092) than with downward movements (r=0-78).