Evidence against the temporal subsampling account of illusory motion reversal.
Evidence against the temporal subsampling account of illusory motion reversal.
复制标题
反对虚幻运动反转的时间子采样解释的证据。
DOI：
10.1167/8.4.13
复制
发表时间：
2008
影响因子：
1.8
通讯作者：
Eagleman,DavidM
中科院分区：
文献类型：
--
作者：
Kline,KeithA;Eagleman,DavidM
当观看连续的平滑运动时，可能会零星地出现反向运动的错觉。这被认为是视觉系统离散时间采样的证据，类似于在电影上产生马车轮子效应的采样(D.Purves，JA Paydarar，&TJ Andrews，1996；R.VanRullen，L.Reddy，&C.Koch，2005)。在另一种理论中，错觉不是离散采样的结果，而是适当激活和错误激活的运动探测器之间的知觉竞争(Ka Kline，AO Holcombe，&DM Eagleman，2004,2006)。目前的研究结果表明，两个空间重叠的垂直运动的错觉反转经常单独发生，这为错觉运动反转(IMR)是由视觉区域内的时间采样引起的可能性提供了证据。此外，我们发现IMR发生在非均匀和非周期的刺激下--这一观察结果没有被时间抽样假设所解释。我们提出，运动后效叠加在运动刺激上，零星地允许反向运动探测器主导感知。
An illusion of reversed motion may occur sporadically while viewing continuous smooth motion. This has been suggested as evidence of discrete temporal sampling by the visual system in analogy to the sampling that generates the wagon–wheel effect on film (D. Purves, JA Paydarfar, & TJ Andrews, 1996; R. VanRullen, L. Reddy, & C. Koch, 2005). In an alternative theory, the illusion is not the result of discrete sampling but instead of perceptual rivalry between appropriately activated and spuriously activated motion detectors (KA Kline, AO Holcombe, & DM Eagleman, 2004, 2006). Results of the current study demonstrate that illusory reversals of two spatially overlapping and orthogonal motions often occur separately, providing evidence against the possibility that illusory motion reversal (IMR) is caused by temporal sampling within a visual region. Further, we find that IMR occurs with non-uniform and non-periodic stimuli—an observation that is not accounted for by the temporal sampling hypothesis. We propose, that a motion aftereffect is superimposed on the moving stimulus, sporadically allowing motion detectors for the reverse direction to dominate perception.