Sensitivity of the Action Observation Network to Physical and Observational Learning
Sensitivity of the Action Observation Network to Physical and Observational Learning
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DOI：
10.1093/cercor/bhn083
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发表时间：
2009-02-01
期刊：
影响因子：
3.7
通讯作者：
Grafton, Scott T.
中科院分区：
文献类型：
--
作者：
Cross, Emily S.;Kraemer, David J. M.;Grafton, Scott T.
人类的运动技能可以通过观察而获得，而不需要直接的身体练习。目前的研究测试，如果物理排练和观察学习共享共同的神经基板内的行动观察网络（AON），包括运动前区和下顶叶区域，即区域激活执行和观察类似的行动。参与者在音乐视频中进行了5天的舞蹈训练。每天他们身体排练一组舞蹈序列（“跳舞”），并被动地观看一组不同的序列（“观看”）。在5天训练之前和之后立即获得功能性磁共振成像。训练后，AON的一个子集表现出一定程度的观察和物理学习的共同活动。在这些运动前区和顶叶区域的活动持续观察序列跳舞或观看，但下降不熟悉的序列相对于训练前的扫描会话。这些成像数据证明了人类大脑中基于观察学习而没有物理实践的动作共振过程的出现，并确定了物理和观察学习的神经基质的共性。
Human motor skills can be acquired by observation without the benefit of immediate physical practice. The current study tested if physical rehearsal and observational learning share common neural substrates within an action observation network (AON) including premotor and inferior parietal regions, that is, areas activated both for execution and observation of similar actions. Participants trained for 5 days on dance sequences set to music videos. Each day they physically rehearsed one set of dance sequences ("danced"), and passively watched a different set of sequences ("watched"). Functional magnetic resonance imaging was obtained prior to and immediately following the 5 days of training. After training, a subset of the AON showed a degree of common activity for observational and physical learning. Activity in these premotor and parietal regions was sustained during observation of sequences that were danced or watched, but declined for unfamiliar sequences relative to the pretraining scan session. These imaging data demonstrate the emergence of action resonance processes in the human brain based on observational learning without physical practice and identify commonalities in the neural substrates for physical and observational learning.