Forming tool use representations: a neurophysiological investigation into tool exposure.
Forming tool use representations: a neurophysiological investigation into tool exposure.
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形成工具使用表征：对工具暴露的神经生理学研究。
DOI：
10.1162/jocn_a_00004
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发表时间：
2011
影响因子：
3.2
通讯作者：
Wheaton,LewisA
中科院分区：
文献类型：
--
作者：
Mizelle,JohnChristopher;Tang,Teresa;Pirouz,Nikta;Wheaton,LewisA
先前的工作已经确定了一个共同的左顶额叶网络，用于存储各种任务的与工具有关的信息。这些表述是如何根据不同的曝光模式在这个网络中建立起来的，目前尚不清楚。在这里，健康的受试者使用熟悉和陌生的工具进行身体练习(直接暴露)。另一组受试者通过视频观察(间接接触)相同的工具，以了解这些学习策略是如何创建表征的。为了评估在不同暴露模式下参与哑剧的神经机制，对两种工具执行了一项哑剧任务，同时用高密度脑电记录神经激活。使用β频段(13-22赫兹)事件相关去同步化来评估与运动规划相关的神经激活。评估大脑半球优势，并生成激活图以了解激活的地形图。使用标准化的低分辨率脑电磁断层扫描进行条件(工具熟悉度和工具暴露的影响)的比较。直接暴露后的新工具哑剧导致双侧顶额叶区域更大的激活。间接训练后的激活随工具熟悉程度的不同而不同；熟悉工具的哑剧在左侧顶额叶区域表现出更大的激活，而新工具在右侧颞叶至枕区表现出更大的激活。这些发现与理解我们几乎没有经验的新工具中涉及的运动相关行为的机制有关，并可以延伸到工具使用运动学习的高级理论中。
Prior work has identified a common left parietofrontal network for storage of tool-related information for various tasks. How these representations become established within this network on the basis of different modes of exposure is unclear. Here, healthy subjects engaged in physical practice (direct exposure) with familiar and unfamiliar tools. A separate group of subjects engaged in video-based observation (indirect exposure) of the same tools to understand how these learning strategies create representations. To assess neural mechanisms engaged for pantomime after different modes of exposure, a pantomime task was performed for both tools while recording neural activation with high-density EEG. Motor planning–related neural activation was evaluated using beta band (13–22 Hz) event-related desynchronization. Hemispheric dominance was assessed, and activation maps were generated to understand topography of activations. Comparison of conditions (effects of tool familiarity and tool exposure) was performed with standardized low-resolution brain electromagnetic tomography. Novel tool pantomime following direct exposure resulted in greater activations of bilateral parietofrontal regions. Activations following indirect training varied by tool familiarity; pantomime of the familiar tool showed greater activations in left parietofrontal areas, whereas the novel tool showed greater activations at right temporoparieto-occipital areas. These findings have relevance to the mechanisms for understanding motor-related behaviors involved in new tools that we have little or no experience with and can extend into advancing theories of tool use motor learning.
影响因子：
25
作者：
Maess, B;Koelsch, S;Friederici, AD
通讯作者：
Friederici, AD
影响因子：
1.9
作者：
Bodner, M;Muftuler, LT;Shaw, GL
通讯作者：
Shaw, GL