Monetary reward modulates task-irrelevant perceptual learning for invisible stimuli.
Monetary reward modulates task-irrelevant perceptual learning for invisible stimuli.
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DOI：
10.1371/journal.pone.0124009
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发表时间：
2015
期刊：
影响因子：
3.7
通讯作者：
Turatto M
中科院分区：
文献类型：
--
作者：
Pascucci D;Mastropasqua T;Turatto M
任务无关感知学习（TIPL）表明，大脑对不可见和无人看管的视觉刺激的辨别能力也可以提高。有人假设这种形式的“无意识”神经可塑性是由正确的任务表现触发的内源性奖励机制介导的。虽然这一结果挑战了注意在知觉学习中的强制性作用，但没有直接证据表明目标识别，奖励和TIPL之间存在假设的联系。在这里，我们操纵了与目标相关的奖励值，以证明无形输入的感觉可塑性中的强化机制的参与。参与者接受了与高或低的货币激励相关的中心任务的培训，仅在实验结束时提供，而阈下刺激则在外围提供。我们的研究结果表明，高激励值的目标诱导更大程度的知觉改善的阈下刺激，支持的作用，强化机制在TIPL。
Task Irrelevant Perceptual Learning (TIPL) shows that the brain’s discriminative capacity can improve also for invisible and unattended visual stimuli. It has been hypothesized that this form of “unconscious” neural plasticity is mediated by an endogenous reward mechanism triggered by the correct task performance. Although this result has challenged the mandatory role of attention in perceptual learning, no direct evidence exists of the hypothesized link between target recognition, reward and TIPL. Here, we manipulated the reward value associated with a target to demonstrate the involvement of reinforcement mechanisms in sensory plasticity for invisible inputs. Participants were trained in a central task associated with either high or low monetary incentives, provided only at the end of the experiment, while subliminal stimuli were presented peripherally. Our results showed that high incentive-value targets induced a greater degree of perceptual improvement for the subliminal stimuli, supporting the role of reinforcement mechanisms in TIPL.
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DOI：
10.1073/pnas.1104047108
发表时间：
2011-06-21
影响因子：
11.1
作者：
Anderson, Brian A.;Laurent, Patryk A.;Yantis, Steven
通讯作者：
Yantis, Steven
影响因子：
8.2
作者：
Della Libera, Chiara;Chelazzi, Leonardo
通讯作者：
Chelazzi, Leonardo
影响因子：
--
作者：
Pelli, DG
通讯作者：
Pelli, DG
影响因子：
1.8
作者：
Seitz, Aaron R.;Watanabe, Takeo
通讯作者：
Watanabe, Takeo
影响因子：
1.9
作者：
Herzog, MH;Fahle, M
通讯作者：
Fahle, M