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首页> 外文期刊>The European Journal of Neuroscience >The sound of actions as reflected by mismatch negativity: rapid activation of cortical sensory-motor networks by sounds associated with finger and tongue movements.
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The sound of actions as reflected by mismatch negativity: rapid activation of cortical sensory-motor networks by sounds associated with finger and tongue movements.

机译：失配负性所反映的动作声音：与手指和舌头运动相关的声音会迅速激活皮质感觉运动网络。

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摘要

In order to explore the activation dynamics of the human action recognition system, we investigated electrophysiological distinctions between the brain responses to sounds produced by human finger and tongue movements. Of special interest were the questions of how early these differences may occur, and whether the neural activation at the early stages of processing involves cortical motor representations related to the generation of these sounds. For this purpose we employed a high-density EEG set-up and recorded mismatch negativity (MMN) using a recently developed novel multideviant paradigm which allows acquisition of a high number of trials within a given time period. Deviant stimuli were naturally recorded finger and tongue clicks, as well as control stimuli with similar physical features but without the clear action associations (this was tested in a separate behavioural experiment). Both natural stimuli produced larger MMNs than their respective control stimuli at approximately 100 ms, indicatingactivation of memory traces for familiar action-related sounds. Furthermore, MMN topography at this latency differed between the brain responses to the natural finger and natural tongue sounds. Source estimation revealed the strongest sources for finger sounds in centrolateral areas of the left hemisphere, suggesting that hearing a sound related to finger actions evokes activity in motor areas associated with the dominant hand. Furthermore, tongue sounds produced activation in more inferior brain areas. Our data suggest that motor areas in the human brain are part of neural systems subserving the early automatic recognition of action-related sounds.
机译：为了探索人类动作识别系统的激活动力学，我们研究了大脑对人手指和舌头运动产生的声音的反应之间的电生理差异。特别引起关注的问题是这些差异可能在多早出现，以及在处理的早期阶段神经激活是否涉及与这些声音的产生有关的皮质运动表征。为此，我们采用了高密度脑电图设置，并使用最近开发的新颖多偏差范式记录了失配负值（MMN），该范式允许在给定的时间段内进行大量试验。异常刺激是自然记录的手指和舌头的喀哒声，以及具有相似物理特征但没有明确的动作关联的对照刺激（这在单独的行为实验中进行了测试）。两种自然刺激都在大约100毫秒处产生比其各自的对照刺激更大的MMN，表明激活了记忆迹线以熟悉与动作相关的声音。此外，在此等待时间的MMN地形在大脑对自然手指和自然舌音的反应之间有所不同。声源估计显示出左半球中央外侧区域中手指声音的最强来源，这表明听到与手指动作有关的声音会引起与优势手相关的运动区域的活动。此外，舌音在大脑下方区域产生激活。我们的数据表明，人脑中的运动区域是神经系统的一部分，有助于早期自动识别与动作相关的声音。

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