Evidence for a distributed hierarchy of action representation in the brain
Evidence for a distributed hierarchy of action representation in the brain
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DOI：
10.1016/j.humov.2007.05.009
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发表时间：
2007-08-01
影响因子：
2.1
通讯作者：
Hamilton, Antonia F. de C.
中科院分区：
文献类型：
--
作者：
Grafton, Scott T.;Hamilton, Antonia F. de C.
复杂的人类行为是围绕着时间远端结果组织起来的。基于正常抓取、多步骤物体使用和模仿等任务的行为研究证实了运动控制的相对层次的存在。失用症中的检索错误也支持了表征大脑活动的层次模型的概念。在这篇综述中，使用重复抑制的方法对动作观察进行了三个功能性脑成像研究，以确定一个假定的神经结构，该神经结构支持运动学水平的动作理解，目标中心目标和最终的运动结果。这些基于观察的结果可能与行动计划和执行的类似功能解剖学层次结构相匹配。如果这是真的，那么这些发现就支持了一种功能解剖学模型，这种模型分布在一组相互连接的大脑区域上，这些区域在目标导向行为的不同方面被不同地招募，而不是一个组织和理解所有行为的同质镜像神经元系统。(c) 2007 Elsevier B.V.版权所有
Complex human behavior is organized around temporally distal outcomes. Behavioral studies based on tasks such as normal prehension, multi-step object use and imitation establish the existence of relative hierarchies of motor control. The retrieval errors in apraxia also support the notion of a hierarchical model for representing action in the brain. In this review, three functional brain imaging studies of action observation using the method of repetition suppression are used to identify a putative neural architecture that supports action understanding at the level of kinematics, object centered goals and ultimately, motor outcomes. These results, based on observation, may match a similar functional-anatomic hierarchy for action planning and execution. If this is true, then the findings support a functional-anatomic model that is distributed across a set of interconnected brain areas that are differentially recruited for different aspects of goal-oriented behavior, rather than a homogeneous mirror neuron system for organizing and understanding all behavior. (c) 2007 Elsevier B.V. All rights reserved.