Visual fixations and the computation and comparison of value in simple choice
Visual fixations and the computation and comparison of value in simple choice
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DOI：
10.1038/nn.2635
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发表时间：
2010-10-01
影响因子：
25
通讯作者：
Rangel, Antonio
中科院分区：
文献类型：
--
作者：
Krajbich, Ian;Armel, Carrie;Rangel, Antonio
大多数在多种刺激之间面临选择的生物会反复观察它们，大概是在对这些事物的价值进行比较。在基于价值的决策中，比较过程的本质以及视觉注视在此过程中的作用鲜为人知。我们创建了一个基于价值的二选一计算模型，在该模型中注视引导比较过程，并利用眼动追踪在人类身上进行了测试。我们发现该模型能够定量解释注视模式与选择之间的复杂关系，以及几种由注视驱动的决策偏差。
Most organisms facing a choice between multiple stimuli will look repeatedly at them, presumably implementing a comparison process between the items' values. Little is known about the nature of the comparison process in value-based decision-making or about the role of visual fixations in this process. We created a computational model of value-based binary choice in which fixations guide the comparison process and tested it on humans using eye-tracking. We found that the model can quantitatively explain complex relationships between fixation patterns and choices, as well as several fixation-driven decision biases.