Standing, with knees slightly bent, first hold the left ear against the left shoulder. Then extend the left arm straight out. Have the eyes follow the line of the arm, looking out past the finger tips. Trace an omega sign ( figure eight ) with eyes following the movement. Move slowly. Repeat on other side.
Rationale: Cross body movement of all kinds strengthens the corpus callosum between the sides of the brain. The challenge to balance stimulates the vestibular system, and the slow movement requires the involvement of the fine motor system. This exercise also helps eye tracking.
Source: Dr Paul Dennison, described in the book Smartmoves by Carla Hannaford, Ph.D