Widmer M, Ziegler N, Held J, Luft A, Lutz K
University Hospital of Zurich, Zurich, Switzerland; Cereneo, Center for Neurology and Rehabilitation, Vitznau, Switzerland; Neural Control of Movement Lab, ETH Zurich, Zurich, Switzerland.
Institute of Human Movement Sciences and Sport, ETH Zurich, Zurich, Switzerland.
Prog Brain Res. 2016;229:303-323. doi: 10.1016/bs.pbr.2016.05.006. Epub 2016 Jul 7.
Knowledge of performance can activate the striatum, a key region of the reward system and highly relevant for motivated behavior. Using functional magnetic resonance imaging, striatal activity linked to knowledge of performance was measured during the training of a repetitive arc-tracking task. Knowledge of performance was given after a random selection of trials or after good performance. The third group received knowledge of performance after good performance plus a monetary reward. Skill learning was measured from pre- to post- (acquisition) and from post- to 24h posttraining (consolidation). Our results demonstrate an influence of feedback on motor skill learning. Adding a monetary reward after good performance leads to better consolidation and higher ventral striatal activation than knowledge of performance alone. In turn, rewarding strategies that increase ventral striatal response during training of a motor skill may be utilized to improve skill consolidation.
对表现的了解能够激活纹状体，它是奖励系统的关键区域，与动机性行为高度相关。在一项重复性弧线追踪任务的训练过程中，使用功能磁共振成像测量了与对表现的了解相关的纹状体活动。对表现的了解是在随机选择的试验后或良好表现后给出的。第三组在良好表现后获得对表现的了解并加上金钱奖励。技能学习是从前训练到训练后（习得阶段）以及从训练后到训练后24小时（巩固阶段）进行测量的。我们的结果证明了反馈对运动技能学习的影响。与仅了解表现相比，在良好表现后加上金钱奖励会导致更好的巩固以及更高的腹侧纹状体激活。反过来，在运动技能训练期间增加腹侧纹状体反应的奖励策略可能被用来改善技能巩固。
