Can attention selectively bias bistable perception? Differences between binocular rivalry and ambiguous figures
Can attention selectively bias bistable perception? Differences between binocular rivalry and ambiguous figures
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DOI：
10.1167/4.7.2
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发表时间：
2004-01-01
影响因子：
1.8
通讯作者：
Tong, F
中科院分区：
文献类型：
--
作者：
Meng, M;Tong, F
不同形式的感知是由共同的神经机制还是独立的神经机制产生的，这是有争议的。双眼竞争涉及竞争的单眼图像之间的感知交替，而模糊的数字，如内克尔立方体导致两种可能的图像解释之间的交替。先前的研究表明，观察者可以自愿控制竞争和内克尔立方体逆转的交替率，这可能表明竞争感知来自自上而下选择的共同机制。然而，根据选择性注意的偏向竞争模型，注意应该能够增强注意的记忆而抑制不注意的记忆。在这里，我们研究了选择性注意调制的优势持续时间在视觉感知。观察员一致表现出更弱的选择性注意力控制的竞争比内克尔立方体逆转，即使是竞争显示，最大限度地提高了功能，对象，或空间为基础的注意力选择的机会。与此相反，非选择性控制的交替率是两种形式的感知和相应的选择性注意力控制的估计不佳。我们的研究结果支持的概念，双目竞争涉及一个更自动的，刺激驱动的形式比内克尔立方体逆转的视觉竞争，因此，是不容易偏见的选择性注意。
It is debated whether different forms of bistable perception result from common or separate neural mechanisms. Binocular rivalry involves perceptual alternations between competing monocular images, whereas ambiguous figures such as the Necker cube lead to alternations between two possible pictorial interpretations. Previous studies have shown that observers can voluntarily control the alternation rate of both rivalry and Necker cube reversal, perhaps suggesting that bistable perception results from a common mechanism of top-down selection. However, according to the biased competition model of selective attention, attention should be able to enhance the attended percept and suppress the unattended percept. Here, we investigated selective attentional modulation of dominance durations in bistable perception. Observers consistently showed much weaker selective attentional control for rivalry than for Necker cube reversal, even for rivalry displays that maximized the opportunities for feature-, object-, or space-based attentional selection. In contrast, nonselective control of alternation rate was comparably strong for both forms of bistable perception and corresponded poorly with estimates of selective attentional control. Our results support the notion that binocular rivalry involves a more automatic, stimulus-driven form of visual competition than Necker cube reversal, and as a consequence, is less easily biased by selective attention.