Anstis Stuart
Department of Psychology, UCSD, La Jolla, CA 92093-0109, USA.
J Vis. 2005 Mar 8;5(3):194-201. doi: 10.1167/5.3.4.
Rotating outline squares and circles were viewed through a sunburst pattern of stationary radial slits. At slow rotation rates the (dotted) square was perceived globally as a single rotating shape, and at higher rates, as a set of independent local dots moving in and out radially. An eccentrically rotating circle was seen as a dotted circle; the dots comprising the circle actually moved in and out along straight radial paths, but observers could never see this. Instead, they saw the dots as running around the rim of the circle. The common motions were rejected, perhaps by subtracting the mean motion of all points from each point. Only relative motion could be seen, and absolute dot motions were not available to consciousness. Thus the visual motion system parsed patterns of absolute motion vectors into patterns of relative motion vectors.
旋转的轮廓正方形和圆形通过固定的径向狭缝组成的日晕图案来观察。在缓慢的旋转速率下，（虚线）正方形整体上被视为单个旋转形状，而在较高速率下，则被视为一组沿径向进出移动的独立局部点。一个偏心旋转的圆被看作是一个带点的圆；组成这个圆的点实际上是沿着直线径向路径进出移动的，但观察者永远看不到这一点。相反，他们看到这些点在圆的边缘周围移动。共同的运动被排除了，也许是通过从每个点中减去所有点的平均运动来实现的。只能看到相对运动，绝对的点运动无法被意识所感知。因此，视觉运动系统将绝对运动矢量模式解析为相对运动矢量模式。
