Attention speeds binocular rivalry
Attention speeds binocular rivalry
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DOI：
10.1111/j.1467-9280.2006.01777.x
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发表时间：
2006-09-01
影响因子：
8.2
通讯作者：
Verstraten, Frans A. J.
中科院分区：
文献类型：
--
作者：
Paffen, Chris L. E.;Alais, David;Verstraten, Frans A. J.
在双眼竞争中，不相容的图像呈现出二元竞争的知觉优势。长期以来，人们一直在争论双目竞争是否可以由注意力控制。大多数研究表明，对双眼竞争的自愿控制是有限的。我们试图通过呈现并发任务来转移双眼竞争的注意力。转移注意力减缓了竞争交替率，并且与并发任务的难度成正比。然而，即使是一个非常苛刻的分心任务，也不能完全阻止竞争的变化。考虑到转移注意力相当于降低竞争刺激的对比度，注意力加速双眼竞争的能力很可能是由于刺激的有效对比度增加，从而提高了皮质反应的增益。这种有效对比的增加最终会导致感知转换，从而限制了自愿控制。因此，注意力加速了竞争的变化，但对竞争过程没有内在的控制。
During binocular rivalry, incompatible images presented dichoptically compete for perceptual dominance. It has long been debated whether binocular rivalry can be controlled by attention. Most studies have shown that voluntary control over binocular rivalry is limited. We sought to remove attention from binocular rivalry by presenting a concurrent task. Diverting attention slowed the rivalry alternation rate, and did so in proportion to the difficulty of the concurrent task. Even a very demanding distractor task, however, did not arrest rivalry alternations completely. Given that diverting attention was equivalent to lowering the contrast of the rival stimuli, the ability of attention to speed binocular rivalry is most likely due to an increase in the effective contrast of the stimuli through boosting the gain of the cortical response. This increase in effective contrast will ultimately lead to a perceptual switch, thereby limiting voluntary control. Thus, attention speeds rivalry alternations, but has no inherent control over the rivalry process.