Robotic movement preferentially engages the action observation network
Robotic movement preferentially engages the action observation network
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DOI：
10.1002/hbm.21361
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发表时间：
2012-09-01
影响因子：
4.8
通讯作者：
Prinz, Wolfgang
中科院分区：
文献类型：
--
作者：
Cross, Emily S.;Liepelt, Roman;Prinz, Wolfgang
作为人类，我们通过观察他人的动作来收集大量关于他们的信息。人脑中的顶叶、前运动区以及枕颞区所构成的网络，被称为动作观察网络（AON），它通过一种将观察到的动作和自身执行的动作相联系的自动匹配过程，参与到对他人动作的理解中。目前对于AON的观点认为，匹配过程偏向于熟悉的动作；特别是由同类执行且存在于观察者自身运动技能库中的动作。在这项研究中，我们通过两个独立的功能性神经影像实验，测试当观察自然的人类动作与类似机器人的僵硬动作时，该网络对形状和运动线索如何做出反应。在实验1中，我们报告了一个令人惊讶的发现：前运动区、顶叶以及枕颞区对僵硬的、类似机器人的动作的反应比对自然的人类动作更为强烈。在实验2中，我们通过证明无论行为主体是人类还是机器人都会出现相同的结果模式，重复并扩展了这一发现，这表明对类似机器人动作的优先反应与行为主体的外形无关。这些数据通过证明该网络的核心节点可以被人类和非人类行为主体所执行的新颖、不熟悉的动作灵活地激活，从而对先前关于AON功能的观点提出了挑战。因此，这些发现表明AON对更广泛的动作特征敏感，而不仅仅是熟悉的那些特征。《人类大脑图谱》33:2238 - 2254, 2012。（c）2011威利期刊公司
As humans, we gather a wide range of information about other people from watching them move. A network of parietal, premotor, and occipitotemporal regions within the human brain, termed the action observation network (AON), has been implicated in understanding others' actions by means of an automatic matching process that links observed and performed actions. Current views of the AON assume a matching process biased towards familiar actions; specifically, those performed by conspecifics and present in the observer's motor repertoire. In this study, we test how this network responds to form and motion cues when observing natural human motion compared to rigid robotic-like motion across two independent functional neuroimaging experiments. In Experiment 1, we report the surprising finding that premotor, parietal, occipitotemporal regions respond more robustly to rigid, robot-like motion than natural human motion. In Experiment 2, we replicate and extend this finding by demonstrating that the same pattern of results emerges whether the agent is a human or a robot, which suggests the preferential response to robot-like motion is independent of the agent's form. These data challenge previous ideas about AON function by demonstrating that the core nodes of this network can be flexibly engaged by novel, unfamiliar actions performed by both human and non-human agents. As such, these findings suggest that the AON is sensitive to a broader range of action features beyond those that are simply familiar. Hum Brain Mapp 33:22382254, 2012. (c) 2011 Wiley Periodicals, Inc.