Blink before and after you think: Blinks occur prior to and following cognitive load indexed by pupillary responses
Blink before and after you think: Blinks occur prior to and following cognitive load indexed by pupillary responses
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DOI：
10.1111/j.1469-8986.2008.00681.x
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发表时间：
2008-09-01
期刊：
影响因子：
3.7
通讯作者：
Steinhauer, Stuart
中科院分区：
文献类型：
--
作者：
Siegle, Greg J.;Ichikawa, Naho;Steinhauer, Stuart
瞳孔放大和眨眼提供了信息处理的互补、互斥的指标。虽然每个指标都与认知负荷有关，但眨眼的发生排除了瞳孔直径的测量。这些指标通常在独立文献中进行评估。我们研究了这些措施在何种程度上是相关的两个认知任务，使用一种新的方法，量化的比例，在试验过程中获得的每个样本发生眨眼的试验。该测量允许连续瞳孔扩张和眨眼波形的互相关。结果表明，眨眼发生在早期的感觉处理和持续的信息处理。瞳孔放大更好地反映了持续的信息处理。这些指标一起提供了一个丰富的图片的时间过程中的信息处理，从早期反应，通过持续的认知，并在刺激相关的认知结束。
Pupil dilation and blinks provide complementary, mutually exclusive indices of information processing. Though each index is associated with cognitive load, the occurrence of a blink precludes the measurement of pupil diameter. These indices have generally been assessed in independent literatures. We examine the extent to which these measures are related on two cognitive tasks using a novel method that quantifies the proportion of trials on which blinks occur at each sample acquired during the trial. This measure allows cross-correlation of continuous pupil-dilation and blink waveforms. Results indicate that blinks occur during early sensory processing and following sustained information processing. Pupil dilation better reflects sustained information processing. Together these indices provide a rich picture of the time course of information processing, from early reactivity through sustained cognition, and after stimulus-related cognition ends.