Judgment of actions in experts: A high-resolution EEG study in elite athletes
Judgment of actions in experts: A high-resolution EEG study in elite athletes
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DOI：
10.1016/j.neuroimage.2008.11.035
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发表时间：
2009-04-01
期刊：
影响因子：
5.7
通讯作者：
Eusebi, Fabrizio
中科院分区：
文献类型：
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作者：
Babiloni, Claudio;Del Percio, Claudio;Eusebi, Fabrizio
本研究测试了以下两个假设：(i)与非运动员相比，优秀运动员在判断运动观察动作时的皮层激活程度降低；（ii）在优秀运动员中，对观察到的运动动作的良好判断与较低的皮质激活有关。为了解决这些问题，我们记录了15名优秀艺术体操运动员和13名非体操运动员的脑电图（EEG）数据。他们观看了一系列的120个艺术体操视频。在每个视频结束时，受试者必须从0到10的范围内判断练习的艺术/运动水平。他们的判断与教练的判断之间的不匹配指示了行动判断的程度。用sLORETA估计脑电皮层源。参考刺激前阶段，视频期间α (8 - 12 Hz)节奏的功率下降表明皮层激活（事件相关去同步，ERD）。关于假设(1)，优秀艺术体操运动员的低频率和高频α ERD在枕区和颞区（腹侧通路）以及背侧通路的振幅低于非体操运动员。对于假设（ii），在优秀艺术体操运动员中，高判断错误视频的高频α ERD振幅高于低判断错误视频的振幅；下后顶叶和腹侧运动前区（“镜像”通路）也是如此。这些结果表明，对观察到的运动动作的判断与低幅度的α ERD有关，作为空间选择性皮质激活（“神经效率”）的可能指标。(C) 2008爱思唯尔公司版权所有。
The present study tested the two following hypotheses: (i) compared to non-athletes, elite athletes are characterized by a reduced cortical activation during the judgment of sporting observed actions; (ii) in elite athletes, a good judgment of observed sporting actions is related to a low cortical activation. To address these issues, electroencephalographic (EEG) data were recorded in 15 elite rhythmic gymnasts and 13 non-gymnasts. They observed a series of 120 rhythmic gymnastic videos. At the end of each video, the subjects had to judge the artistic/athletic level of the exercise by a scale from 0 to 10. The mismatch between their judgment and that of the coach indexed the degree of action judgment. The EEG cortical sources were estimated by sLORETA. With reference to a pre-stimulus period, the power decrease of alpha (8 - 12 Hz) rhythms during the videos indexed the cortical activation(event related desynchronization, ERD). Regarding the hypothesis (i), low- and high-frequency alpha ERD was lower in amplitude in the elite rhythmic gymnasts compared to the non-gymnasts in occipital and temporal areas (ventral pathway) and in dorsal pathway. Regarding the hypothesis (ii), in the elite rhythmic gymnasts high-frequency alpha ERD was higher in amplitude with the videos characterized by a high judgment error than those characterized by a low judgment error; this was true in inferior posterior parietal and ventral premotor areas ("mirror" pathway). These results globally suggest that the judgment of observed sporting actions is related to low amplitude of alpha ERD, as a possible index of spatially selective cortical activation ("neural efficiency"). (C) 2008 Elsevier Inc. All rights reserved.