Alais David, Parker Amanda
School of Psychology, The University of Sydney Sydney, NSW, Australia.
Front Hum Neurosci. 2012 Jul 31;6:227. doi: 10.3389/fnhum.2012.00227. eCollection 2012.
When the eyes view images that are sufficiently different to prevent binocular fusion, binocular rivalry occurs and the images are seen sequentially in a stochastic alternation. Here we examine whether temporal frequency differences will trigger binocular rivalry by presenting two dynamic random-pixel arrays that are spatially matched but which modulate temporally at two different rates. We found that binocular rivalry between the two temporal frequencies did indeed occur, provided the frequencies were sufficiently different. Differences greater than two octaves (i.e., a factor of four) produced robust rivalry with clear-cut alternations similar to those experienced with spatial rivalry and with similar alternation rates. This finding indicates that temporal information can produce binocular rivalry in the absence of spatial conflict and is discussed in terms of rivalry requiring conflict between temporal channels.
当眼睛观看差异足够大以至于无法实现双眼融合的图像时，就会发生双眼竞争，图像会以随机交替的方式依次呈现。在这里，我们通过呈现两个空间匹配但以两种不同速率进行时间调制的动态随机像素阵列，来研究时间频率差异是否会引发双眼竞争。我们发现，只要频率差异足够大，两个时间频率之间确实会发生双眼竞争。大于两个八度（即四倍的因子）的差异会产生强烈的竞争，其交替清晰明确，类似于空间竞争中所经历的情况，且交替速率相似。这一发现表明，在没有空间冲突的情况下，时间信息也能产生双眼竞争，并从竞争需要时间通道之间的冲突这一角度进行了讨论。
