Sheldon M. Ebenholtz

Stereoscopic thresholds as a function of head- and object-orientation.

Abstract Stereoscopic thresholds were measured under six degrees of lateral tilt of object and observer respectively. Thresholds increased inversely with the cosine of the angle of inclination. Conditions of head-tilt produced significantly lower thresholds than object-tilt. These results are not compatible with presently available geometric models of binocular disparity.