Dissociable substrates for body motion and physical experience in the human action observation network
Dissociable substrates for body motion and physical experience in the human action observation network
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DOI：
10.1111/j.1460-9568.2009.06941.x
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发表时间：
2009-10-01
影响因子：
3.4
通讯作者：
Grafton, Scott T.
中科院分区：
文献类型：
--
作者：
Cross, Emily S.;Hamilton, Antonia F. de C.;Grafton, Scott T.
对人类行动的观察招募了一个定义明确的大脑区域网络，然而这个行动观察网络(AON)的目的仍然存在争议。一些作者争辩说，这个网络的发展是为了专门对人类行为的观察做出反应。相反，其他人认为，这个网络对人类和非人类暗示的动作做出反应的方式类似，一个人对动作的熟悉是驱动这个网络的关键因素。以前研究人类和非人类行为线索的研究经常混淆新颖性和刺激形式。在这里，我们使用舞蹈学习范式来评估在观察有或没有人类模型的训练和未训练的舞蹈线索期间的Aon活动。结果表明，AON的各个组成部分对人类形态和舞蹈训练的反应不同。无论训练经验如何，双侧上颞叶皮质优先对有人类在场的视频做出反应。相反，右腹运动前皮质在观察经过训练的序列时反应更强烈，无论有没有人类。我们的发现表明，怡安由独立的、可分离的部分组成，用于运动规划和观察他人的行为。
Observation of human actions recruits a well-defined network of brain regions, yet the purpose of this action observation network (AON) remains under debate. Some authors contend that this network has developed to respond specifically to observation of human actions. Conversely, others suggest that this network responds in a similar manner to actions prompted by human and non-human cues, and that one's familiarity with the action is the critical factor that drives this network. Previous studies investigating human and non-human action cues often confound novelty and stimulus form. Here, we used a dance-learning paradigm to assess AON activity during observation of trained and untrained dance cues where a human model was present or absent. Results show that individual components of the AON respond differently to the human form and to dance training. The bilateral superior temporal cortex responds preferentially to videos with a human present, regardless of training experience. Conversely, the right ventral premotor cortex responds more strongly when observing sequences that had been trained, regardless of the presence of a human. Our findings suggest that the AON comprises separate and dissociable components for motor planning and observing other people's actions.