Kaneko Sae, Anstis Stuart
Japan Society for the Promotion of Science, Tokyo, Japan; Tohoku University, Miyagi, Japan; University of California, San Diego, CA, USA.
University of California, San Diego, CA, USA.
Iperception. 2017 May 19;8(3):2041669517707766. doi: 10.1177/2041669517707766. eCollection 2017 May-Jun.
In simultaneous contrast of spatial frequency (SF), a test grating surrounded by a coarser inducing grating looks apparently finer. We combined this effect with another visual illusion; the fact that flickering the inducing grating raises its apparent SF. We found that the inducer's , not physical spatial frequency, drove the simultaneous contrast that it induced into a test grating. Thus, when the inducer was made to flicker, its SF appeared to be higher and consequently, the test's SF appeared lower than before. This suggests that simultaneous contrast of spatial frequency exists further downstream than the flicker-induced increase in perceived SF.
在空间频率（SF）的同时对比中，被较粗的诱导光栅包围的测试光栅看起来明显更细。我们将这种效应与另一种视觉错觉相结合；即闪烁诱导光栅会提高其表观空间频率这一事实。我们发现，诱导光栅的表观空间频率而非物理空间频率，驱动了它对测试光栅产生的同时对比。因此，当诱导光栅闪烁时，其空间频率看起来更高，结果测试光栅的空间频率看起来比之前更低。这表明空间频率的同时对比存在于比闪烁引起的感知空间频率增加更靠后的下游位置。
