TEMPORAL CHARACTERISTICS OF STEREOSCOPIC PERCEPTION OF ALTERNATELY CHANGING RANDOM-DOT STEREOGRAM
交替呈现随机点立体图对的时间特性

The temporal characteristics ot delayed display ot two halt stereoscopic pictures to either of two eyes was studied. Three sets of psychophysical experiments were conducted. The results indicate that the frequency of alternately presenting RDS (RDS: Random-Dot Stereogram) half pictures to two eyes must be over 4.8 Hz, if stereoscopic perception could be produced.As frequency between two half stereoscopic pictrues presenting to each of two eyes was from 4.8 to 62.5 Hz, stereoscopic perception could be produced but with scintillation, when the frequency was equal 62.5 Hz, a clear perception of form in depth could be produced without scintillation.Both the alternately time between left and right image present and the time of DL and DR affect the binocular fusion and stereopeses.In order to keep the stereoscpic perception, the alternately delayed time of left and right images have to decrease if displaying time for left and right image increase.The results suggest that neither long-term memory nor short-term memory is involved in the processing of stereopsis.