Move the mouse.
In the finger studies — built from the initial latency studies — an “invisible button” sits at the center of the screen. In the first study cursors that touch the button change to the familiar “finger” cursor. In the third however, all the cursors change when the real cursor touches the button. Here the cursors are disrupted by the increased delay, but re-asserted in some fashion once a different parameter visual becomes immediately manipulable.