Abstract
The decay time of stereoscopic depth sensation after the occlusion of one eye is measured for well suprathreshold disparities and for binocular inspection times ranging from 5 to 30 sec. In a dark environment, devoid of any cue, the decay time may attain even 10 sec. This long-term effect is tentatively ascribed to a possible facilitator interaction between information gained through spontaneous fluctuation of accommodation and that due to binocular disparity.