Poom L
Department of Psychology, Uppsala University, Sweden.
Perception. 2000;29(6):661-74. doi: 10.1068/p2997.
Structure-from-motion (SFM) perception is hypothesised to be mediated by units that sense the near-far relationships in transparency-from-motion (TFM) and orientation-from-motion (OFM). The frequency of subjective reversals during observation of ambiguous SFM displays is considerably decreased when either the direction of rotation or the surface orientation is oscillated during the inspection. Such manipulations impede adaptation of units selectively sensitive to TFM and OFM. The results show that both OFM and TFM units are direction-selective, and that the reversal rate is unaffected by reducing TFM to zero; and support the view that depth order, when both TFM and OFM are present, is estimated by common neural units.
运动结构（SFM）感知被假设为由感知透明运动（TFM）和运动方向（OFM）中远近关系的单元介导。当在观察模糊的SFM显示时，旋转方向或表面方向在检查过程中发生振荡，主观反转的频率会显著降低。这种操作会阻碍对TFM和OFM有选择性敏感的单元的适应。结果表明，OFM和TFM单元都是方向选择性的，并且反转率不受将TFM降至零的影响；并支持这样一种观点，即当TFM和OFM都存在时，深度顺序由共同的神经单元估计。
