A task-independent neural representation of subjective certainty in visual perception

被引:17
作者
Heereman, Johannes [1 ,2 ]
Walter, Henrik [2 ,3 ]
Heekeren, Hauke R. [1 ,2 ]
机构
[1] Free Univ Berlin, Biol Psychol & Cognit Neurosci, Dept Educ & Psychol, D-14195 Berlin, Germany
[2] Humboldt Univ, Berlin Sch Mind & Brain, Humboldt Grad Sch, D-10099 Berlin, Germany
[3] Charite, Div Mind & Brain Res, Dept Psychiat & Psychotherapy, D-13353 Berlin, Germany
来源
FRONTIERS IN HUMAN NEUROSCIENCE | 2015年 / 9卷
关键词
decision making; confidence; subjective certainty; perception; fMRI; DECISION-CONFIDENCE; UNCERTAINTY; ACCURACY; NEURONS; CHOICE; IMPACT;
D O I
10.3389/fnhum.2015.00551
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
Am I really sure? This is a question not only scientists ask themselves but practically everybody every day. A recent study provides behavioral evidence supporting the view that one's subjective confidence in a decision (i.e., feeling sure that a decision is correct) is represented in a task-independent format. Previous neuroimaging studies identified neural correlates of decision confidence but whether or not these are task-dependent remains unclear. Here, combining two perceptual decision tasks with functional magnetic resonance imaging (fMRI), we provide neural evidence for a task-independent representation of degrees of subjective certainty (i.e., a neural representation of subjective certainty that remains constant across two visual tasks). Importantly, due to the constant stimulus-intensity used this result is independent of task-difficulty and stimulus properties. Our data provide strong evidence for a generic mechanism underlying the computation of subjective perceptual certainty in vision.
引用
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页数:12
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