Pupil dilation patterns reflect the contents of consciousness
Pupil dilation patterns reflect the contents of consciousness
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DOI：
10.1016/j.concog.2015.05.001
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发表时间：
2015-09-01
影响因子：
2.4
通讯作者：
Wheatley, Thalia
中科院分区：
文献类型：
--
作者：
Kang, Olivia;Wheatley, Thalia
人类意识的研究历来依赖于内省。然而，内省受到可以记住和用语言表达的东西的限制。在这里，我们展示了高时间分辨率瞳孔测量的效用，动态跟踪轨迹的有意识的注意，在一个单一的审判。在眼动追踪的过程中，参与者听到了几个音乐片段，这些音乐片段是以双耳分听的方式播放的（每只耳朵都听到了同样的音乐），然后是以双耳分听的方式播放的（两个片段同时播放，每只耳朵都听到了一个）。在双耳分听时，受试者只注意一只耳朵。我们发现，在一个单一的审判的瞳孔扩张动力学的时间模式区分哪首音乐是有意识地参加了两分试验。对这些瞳孔反应进行去卷积进一步揭示了刺激显著性激发瞳孔扩张的实时变化。两者合计，这些结果表明，瞳孔扩张模式在单次暴露于动态刺激可以被利用来辨别有意识的注意的内容。(C)2015 Elsevier Inc. All rights reserved.
The study of human consciousness has historically depended on introspection. However, introspection is constrained by what can be remembered and verbalized. Here, we demonstrate the utility of high temporal resolution pupillometry to track the locus of conscious attention dynamically, over a single trial. While eye-tracked, participants heard several musical clips played diotically (same music in each ear) and, later, dichotically (two clips played simultaneously, one in each ear). During dichotic presentation, participants attended to only one ear. We found that the temporal pattern of pupil dilation dynamics over a single trial discriminated which piece of music was consciously attended on dichotic trials. Deconvolving these pupillary responses further revealed the real-time changes in stimulus salience motivating pupil dilation. Taken together, these results show that pupil dilation patterns during single-exposure to dynamic stimuli can be exploited to discern the contents of conscious attention. (C) 2015 Elsevier Inc. All rights reserved.