Regan D
Department of Psychology, BSB, York University, North York, Ontario, Canada.
Vision Res. 1993 Nov;33(16):2359-60. doi: 10.1016/0042-6989(93)90114-c.
Two binocular cues to the direction of an object's motion in depth are the ratio (phi R/phi L) between the velocities of the object's retinal images in the right and left eyes and the ratio (phi/gamma) between the velocity of the binocularly-fused image of the object and the rate of change of disparity. We report that the apparent direction of motion in depth of a monocularly-camouflaged target can be varied by altering the ratio phi/gamma. Because no monocular motion signal is available in this case, we conclude that the ratio phi/gamma is a sufficient cue to the direction of motion in depth. This is not to deny that the phi R/phi L cue might be used in the everyday visual situation where monocular velocities phi R and phi L are available to the brain.
用于判断物体深度运动方向的两个双眼线索是物体在右眼和左眼视网膜图像的速度之比（φR/φL），以及物体双眼融合图像的速度与视差变化率之比（φ/γ）。我们报告称，通过改变φ/γ的比值，可以改变单眼伪装目标在深度上的明显运动方向。由于在这种情况下没有单眼运动信号，我们得出结论，φ/γ比值是深度运动方向的充分线索。这并不是要否认在大脑能够获取单眼速度φR和φL的日常视觉情况下，可能会使用φR/φL线索。
