ABSTRACT

Quite recently the system for the vestibular control of eye movements has begun to emerge as a large and a controversial topic. However, for myself, the most remarkable feature of this system still remains its versatility and effectiveness in our everyday life. Imagine, for example, the "engineering" accomplishment of a system which allows one to "keep one's eye on the ball" when running and weaving at top speed in a football game, or to hold the eye on successive "stepping stones" during an exhilarating run down a mountain path. Normal vision alone could certainly not accomplish such feats since not only does normal head movement contain sinusoidal frequencies considerably higher than the upper limit of our visual tracking system, but also much higher head angular velocities are encountered than could be compensated by means of vision alone.