Cantor Christopher R L, Schor Clifton M
Program in Vision Science, University of California at Berkeley, Berkeley, CA 94720-2020, USA.
Vision Res. 2007 Oct;47(22):2841-54. doi: 10.1016/j.visres.2007.06.023. Epub 2007 Sep 14.
When two moving objects are presented in perfect alignment, but are not visible for the same amount of time, the briefer object will often be perceived as "lagging" the object of greater duration. Most investigations of this flash-lag effect (FLE) employ high velocity broadband stimuli, such as lines or dots with sharp boundaries and flashes with rapid onset and offset. We introduce a stimulus paradigm with narrow-band stimuli and measure the stimulus dependence of the FLE when basic stimulus parameters of spatio-temporal frequency and temporal duration are varied. We suggest that this dependence is consistent with the involvement of early visual mechanisms and interpret our results in the context of existing theories of the FLE.
当两个移动的物体呈现出完美对齐，但可见时间不同时，持续时间较短的物体通常会被视为比持续时间较长的物体“滞后”。大多数关于这种闪光滞后效应（FLE）的研究采用高速宽带刺激，例如具有清晰边界的线条或点以及具有快速起始和结束的闪光。我们引入了一种使用窄带刺激的刺激范式，并在时空频率和时间持续时间等基本刺激参数变化时测量FLE对刺激的依赖性。我们认为这种依赖性与早期视觉机制的参与是一致的，并在现有FLE理论的背景下解释我们的结果。
