在感知判断任务中的决策形成过程中,信心的神经相关性
Yiu Hong Ko1, Andong Zhou2, Eva Niessen3
1Melbourne School of Psychological Sciences, The University of Melbourne, Australia; Cognitive Neuroscience, Institute of Neuroscience and Medicine (INM-3), Research Centre Jülich, Germany; Department of Psychology, Faculty of Human Sciences, University of Cologne, Germany.
这项研究研究了决策信心的神经相关性. 研究人员发现,在决策形成过程中,而不是决策后的信号中,中心 - 双脑阳性成分 (CPP) 反映了对感知判断的信心水平.
科学领域:
- 认知神经科学 认知神经科学
- 决策制定研究研究的决定.
- 心理物理学的精神物理.
背景情况:
- 决策信心,一个选择正确的估计概率,对于适应性行为至关重要.
- 之前的研究已经确定了与事件相关的潜在 (ERP) 组件,如中心-周周阳性 (CPP) 和错误阳性 (Pe),与信心相关.
- 相互矛盾的发现和测量混需要进一步调查可靠的ERP信任相关值.
研究的目的:
- 精确地描述脑电图 (EEG) 与决策信心相关.
- 区分决策前和决策后的神经信任信号.
- 调查相对和绝对证据对与信任相关的ERP的影响.
主要方法:
- 参与者使用闪方块执行了比较亮度判断任务.
- 电脑脑电图被记录下来,参与者评价了他们对每个决定的信心.
- 任务参数,包括平均亮度差异 (相对证据) 和整体亮度 (绝对证据),被操纵以改变置信度水平.
主要成果:
- 在具有更高可信度等级的试验中观察到更大的CPP振幅.
- 这种CPP和信心之间的关联独立于相对证据.
- 没有确定可靠的决策后ERP信任相关值,除了那些与响应前基线有人工联系的相关值.
结论:
- 这些发现支持CPP在决策形成过程中的作用,作为信心的神经相关因子.
- 在这种情况下,决策后的ERP不太可能反映出真正的信任估计.
- 这项研究阐明了在感知任务中的信心判断背后的神经过程的时间和性质.
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