In 1963, Wallach, Moore and Davidson artificially increased disparity by having subjects look through a telestereoscope, a device which uses a mirror arrangement to simulate an increased distance between the eyes.
2.
When they viewed a wireform cube through the telestereoscope, subjects reported that the cube s depth appeared greater than its width and height, a result of the greater disparity generated by the telestereoscope.
3.
When they viewed a wireform cube through the telestereoscope, subjects reported that the cube s depth appeared greater than its width and height, a result of the greater disparity generated by the telestereoscope.
4.
After watching the rotating cube in this cue-conflict situation for a 10-minute adaptation period, subjects were again showed the stationary cube ( still through the telestereoscope ) and asked to indicate its depth.
5.
The altered perception of depth was temporary : it could easily be unlearned ( by watching the cube rotate without the telestereoscope ), and the effect dissipated spontaneously after a few minutes, even with if the subjects simply sat with eyes closed during that time.
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