Watching novice action degrades expert motor performance: causation between action production and outcome prediction of observed actions by humans.
Watching novice action degrades expert motor performance: causation between action production and outcome prediction of observed actions by humans.
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DOI：
10.1038/srep06989
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发表时间：
2014-11-11
影响因子：
4.6
通讯作者：
Ganesh G
中科院分区：
文献类型：
--
作者：
Ikegami T;Ganesh G
我们的社交技能是由我们理解和适当回应他人行为的能力决定的。然而，尽管其明显的重要性，使人类能够理解动作的机制在很大程度上仍然不清楚。一个流行但有争议的观点是，运动系统的某些部分有助于我们理解观察到的动作。在这里，使用一种新的行为范式，我们调查了这种信念，通过检查之间的因果关系的行动生产，和行动理解的一个组成部分-结果预测，一个人预测观察到的行动的结果的能力。我们请飞镖专家观察飞镖新手，并预测他们投掷的结果。我们调制提供给他们的反馈，引起了专家的能力，预测观看的行动，同时控制其他实验因素的具体改善，并表现出的变化（改善），在他们的结果预测能力的结果在一个渐进的和成比例的恶化，在专家自己的飞镖性能。这种因果关系支持运动系统参与人类对他人行为的结果预测。
Our social skills are critically determined by our ability to understand and appropriately respond to actions performed by others. However despite its obvious importance, the mechanisms enabling action understanding in humans have remained largely unclear. A popular but controversial belief is that parts of the motor system contribute to our ability to understand observed actions. Here, using a novel behavioral paradigm, we investigated this belief by examining a causal relation between action production, and a component of action understanding - outcome prediction, the ability of a person to predict the outcome of observed actions. We asked dart experts to watch novice dart throwers and predict the outcome of their throws. We modulated the feedbacks provided to them, caused a specific improvement in the expert's ability to predict watched actions while controlling the other experimental factors, and exhibited that a change (improvement) in their outcome prediction ability results in a progressive and proportional deterioration in the expert's own darts performance. This causal relationship supports involvement of the motor system in outcome prediction by humans of actions observed in others.
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