Confidence controls perceptual evidence accumulation
Confidence controls perceptual evidence accumulation
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DOI：
10.1038/s41467-020-15561-w
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发表时间：
2020-04-09
影响因子：
16.6
通讯作者：
Mamassian, Pascal
中科院分区：
文献类型：
--
作者：
Balsdon, Tarryn;Wyart, Valentin;Mamassian, Pascal
感知决定伴随着信心，反映了决定是正确的可能性。在这里，我们的目标是澄清知觉和信心之间的关系，通过研究在三个不同的信心背景下相同的知觉任务。人类观察者被要求对顺序呈现的视觉刺激的来源进行分类。每一个额外的刺激提供了证据，使更准确的感知决策，更好的信心判断。我们发现，观察者的能力，设置适当的证据积累范围的感性决策是强烈的预测能力，使准确的信心判断。当观察者不被允许控制他们对证据的接触时，他们对他们的知觉决定施加了内隐界限，但对他们的信心决定却没有。决策过程之间的这种部分分离反映在行为和瞳孔扩张中。总之，这些研究结果表明，即使在没有明确的速度-准确性权衡的情况下，也存在一种由信心调节的积累-绑定过程，该过程控制感知决策。信心反映了决策正确的可能性。在这里，作者表明，信心从用于感知决策的证据中提取了部分可分离的证据，并且，而不是被动地监测，信心控制了感官信息处理的深度。
Perceptual decisions are accompanied by feelings of confidence that reflect the likelihood that the decision was correct. Here we aim to clarify the relationship between perception and confidence by studying the same perceptual task across three different confidence contexts. Human observers were asked to categorize the source of sequentially presented visual stimuli. Each additional stimulus provided evidence for making more accurate perceptual decisions, and better confidence judgements. We show that observers' ability to set appropriate evidence accumulation bounds for perceptual decisions is strongly predictive of their ability to make accurate confidence judgements. When observers were not permitted to control their exposure to evidence, they imposed covert bounds on their perceptual decisions but not on their confidence decisions. This partial dissociation between decision processes is reflected in behaviour and pupil dilation. Together, these findings suggest a confidence-regulated accumulation-to-bound process that controls perceptual decision-making even in the absence of explicit speed-accuracy trade-offs. Feelings of confidence reflect the likelihood that decisions are correct. Here the authors show that confidence taps partially dissociable evidence from that used for perceptual decisions, and that, rather than passively monitoring, confidence controls the depth of sensory information processing.