Phinney R, Wilson R, Hays B, Peters K, Patterson R
Department of Psychology, Washington State University, Pullman 99164-4820, USA.
Perception. 1994;23(11):1287-300. doi: 10.1068/p231287.
The range of spatial displacements over which cyclopean (stereoscopic) apparent motion is perceived was investigated. The cyclopean stimuli were created from retinal disparity embedded in dynamic random-dot stereograms. In one experiment, the displacement range for crossed-disparity cyclopean motion was compared with that for luminance-domain motion. The results showed that cyclopean motion was perceived over spatial displacements that were about two to three times larger than the displacements over which luminance motion was perceived. In a second experiment, the displacement range for crossed-disparity cyclopean motion was compared with that for uncrossed-disparity cyclopean motion. The results revealed that the displacement range was restricted (motion quality was poor) for uncrossed motion relative to crossed motion. It is inferred that cyclopean motion from crossed disparity is represented at a coarse spatial scale, relative to luminance motion, and that cyclopean motion from uncrossed disparity is suppressed due to occlusion cues present when uncrossed stimuli are seen behind a textured background.
研究了能感知到独眼（立体）表观运动的空间位移范围。独眼刺激是由动态随机点立体图中嵌入的视网膜视差产生的。在一个实验中，将交叉视差独眼运动的位移范围与亮度域运动的位移范围进行了比较。结果表明，能感知到独眼运动的空间位移比能感知到亮度运动的位移大约大两到三倍。在第二个实验中，将交叉视差独眼运动的位移范围与非交叉视差独眼运动的位移范围进行了比较。结果显示，相对于交叉运动，非交叉运动的位移范围受到限制（运动质量较差）。据推测，相对于亮度运动，来自交叉视差的独眼运动在较粗糙的空间尺度上得到表征，并且由于当非交叉刺激出现在有纹理背景之后时存在的遮挡线索，来自非交叉视差的独眼运动受到抑制。
