优化瞳孔认知负荷指标的使用。

IF 1.3 4区 心理学 Q3 OPHTHALMOLOGY Journal of Eye Movement Research Pub Date : 2021-06-11 eCollection Date: 2021-01-01 DOI:10.16910/jemr.14.2.4
Benedict C O F Fehringer
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引用次数: 5

摘要

认知活动指数(ICA)及其开源替代品,瞳孔活动指数(IPA),是基于瞳孔的认知负荷指标,不受光线变化的影响。研究了两项指标对认知需求、疲劳和个体间差异的影响。此外,将双眼瞳孔变化的变异性(差值)与通常计算的双眼平均瞳孔变化(平均值)进行比较。55名参与者在R-Cube-Vis测试前后分别进行了一项空间思维测试,即R-Cube-Vis测试,有六个不同的难度等级和一个简单的固定任务。国际收支指数和国际收支指数的分布具有可比性。在简单注视任务中,ICA/IPA值低于认知要求高的R-Cube-Vis测试。疲劳效应只存在于ICA平均值上。当使用z-标准化控制个体间差异时,这两个指标在测试难度水平之间的影响更大。差异值似乎控制了疲劳,并且似乎比平均值更好地区分了要求更高的认知任务。关于ICA/IPA值的衍生建议有助于在训练和测试场景中获得更多关于个人表现和行为的见解。
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Optimizing the usage of pupillary based indicators for cognitive workload.

The Index of Cognitive Activity (ICA) and its open-source alternative, the Index of Pupillary Activity (IPA), are pupillary-based indicators for cognitive workload and are independent of light changes. Both indicators were investigated regarding influences of cognitive demand, fatigue and inter-individual differences. In addition, the variability of pupil changes between both eyes (difference values) were compared with the usually calculated pupillary changes averaged over both eyes (mean values). Fifty-five participants performed a spatial thinking test, the R-Cube-Vis Test, with six distinct difficulty levels and a simple fixation task before and after the R-Cube-Vis Test. The distributions of the ICA and IPA were comparable. The ICA/IPA values were lower during the simple fixation tasks than during the cognitively demanding R-Cube-Vis Test. A fatigue effect was found only for the mean ICA values. The effects of both indicators were larger between difficulty levels of the test when inter-individual differences were controlled using z-standardization. The difference values seemed to control for fatigue and appeared to differentiate better between more demanding cognitive tasks than the mean values. The derived recommendations for the ICA/IPA values are beneficial to gain more insights in individual performance and behavior during, e.g., training and testing scenarios.

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来源期刊
CiteScore
2.90
自引率
33.30%
发文量
10
审稿时长
10 weeks
期刊介绍: The Journal of Eye Movement Research is an open-access, peer-reviewed scientific periodical devoted to all aspects of oculomotor functioning including methodology of eye recording, neurophysiological and cognitive models, attention, reading, as well as applications in neurology, ergonomy, media research and other areas,
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