Effects of Cortical Microstimulation on Confidence in a Perceptual Decision
Effects of Cortical Microstimulation on Confidence in a Perceptual Decision
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皮质微刺激对知觉决策信心的影响
DOI：
10.1016/j.neuron.2014.09.020
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发表时间：
2014
期刊：
影响因子：
16.2
通讯作者：
M. Shadlen
中科院分区：
文献类型：
--
作者：
Christopher R. Fetsch;Roozbeh Kiani;W. Newsome;M. Shadlen
决策通常与一定程度的确定性或信心有关，即对所选选项正确的概率的估计。最近的神经生理学结果表明，中央处理的证据，导致一个感性的决定，也建立了一定程度的信心。在这里，我们提供了一个因果关系测试这一假设，通过电刺激的视觉皮层参与运动知觉的领域。猴子在嘈杂的显示器中辨别运动方向，如果它们的信心很低，有时允许它们选择退出方向选择。微刺激并没有降低决策的整体信心，而是以模仿视觉运动变化的方式改变了信心，加上感官噪音的小幅增加。结果表明，相同的感觉神经信号支持选择，反应时间和决策的信心，这些信号的人工操作保留了积累的证据和信心之间的定量关系。
Decisions are often associated with a degree of certainty, or confidence—an estimate of the probability that the chosen option will be correct. Recent neurophysiological results suggest that the central processing of evidence leading to a perceptual decision also establishes a level of confidence. Here we provide a causal test of this hypothesis by electrically stimulating areas of the visual cortex involved in motion perception. Monkeys discriminated the direction of motion in a noisy display and were sometimes allowed to opt out of the direction choice if their confidence was low. Microstimulation did not reduce overall confidence in the decision but instead altered confidence in a manner that mimicked a change in visual motion, plus a small increase in sensory noise. The results suggest that the same sensory neural signals support choice, reaction time, and confidence in a decision and that artificial manipulation of these signals preserves the quantitative relationship between accumulated evidence and confidence.
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影响因子：
--
作者：
Sandra E. Wells;John M. X. Hughes;A. Igel;M. Ares
通讯作者：
Sandra E. Wells;John M. X. Hughes;A. Igel;M. Ares
DOI：
10.1073/pnas.0401799101
发表时间：
2004-05-11
影响因子：
11.1
作者：
Mathews, DH;Disney, MD;Turner, DH
通讯作者：
Turner, DH
影响因子：
56.9
作者：
Mori, Kohji;Weng, Shih-Ming;Edbauer, Dieter
通讯作者：
Edbauer, Dieter
影响因子：
15
作者：
Marin, VL;Armitage, BA
通讯作者：
Armitage, BA