Visuo-Attentional and Sensorimotor Alpha Rhythms are Related to Visuo-Motor Performance in Athletes
Visuo-Attentional and Sensorimotor Alpha Rhythms are Related to Visuo-Motor Performance in Athletes
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DOI：
10.1002/hbm.20776
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发表时间：
2009-11-01
影响因子：
4.8
通讯作者：
Eusebi, Fabrizio
中科院分区：
文献类型：
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作者：
Del Percio, Claudio;Babiloni, Claudio;Eusebi, Fabrizio
本研究验证了以下两个假设：（i）与非运动员相比，优秀运动员的特点是减少皮层激活过程中准备精确的视觉运动性能;（ii）在优秀运动员，最佳的视觉运动性能是与低皮层激活。为此，脑电图（EEG; 56通道; Be Plus EB-神经）数据记录在18个右手精英气手枪射击运动员和10个右手非运动员。所有受试者进行了120次射击。EEG数据通过表面拉普拉斯估计进行空间增强。参考基线期，在预激期内α节律的功率降低/增加指示皮质激活/失活（事件相关去同步化/同步化，ERD/ERS）。关于假设（i），在整个头皮上，优秀运动员的低频（约8-10 Hz）和高频（约10-12 Hz）α ERD的振幅低于非运动员。关于假设（ii），优秀运动员表现出高频α ERS（约10-12 Hz）的幅度更大的高分杆（50%）比低分杆;这是真的，在右顶叶和左中央区域。对照分析用另一种皮质激活指标（β ERD，约20 Hz）证实了这些结果。对照分析还表明，在非运动员中没有观察到高分投篮与低分投篮相比α ERD的幅度降低。目前的研究结果在全球范围内表明，在优秀运动员（专家），视觉运动性能是相关的全球减少皮层活动，作为一个可能的指标空间选择性皮层过程（“神经效率”）。《脑图谱》30：3527-3540，2009年。(C)2009威利-利斯公司
This study tested the two following hypotheses: (i) compared with non-athletes, elite athletes are characterized by a reduced cortical activation during the preparation of precise visuo-motor performance; (ii) in elite athletes, an optimal visuo-motor performance is related to a low cortical activation. To this aim, electroencephalographic (EEG; 56 channels; Be Plus EB-Neuro) data were recorded in 18 right-handed elite air pistol shooters and 10 right-handed non-athletes. All subjects performed 120 shots. The EEG data were spatially enhanced by surface Laplacian estimation. With reference to a baseline period, power decrease/increase of alpha rhythms during the preshot period indexed the cortical activation/deactivation (event-related desynchronization/synchronization, ERD/ERS). Regarding the hypothesis (i), low- (about 8-10 Hz) and high-frequency (about 10-12 Hz) alpha ERD was lower in amplitude in the elite athletes than in the non-athletes over the whole scalp. Regarding the hypothesis (ii), the elite athletes showed high-frequency alpha ERS (about 10-12 Hz) larger in amplitude for high score shots (50%) than for low score shots; this was true in right parietal and left central areas. A control analysis confirmed these results with another indicator of cortical activation (beta ERD, about 20 Hz). The control analysis also showed that the amplitude reduction of alpha ERD for the high compared with low score shots was not observed in the non-athletes. The present findings globally suggest that in elite athletes (experts), visuo-motor performance is related to a global decrease of cortical activity, as a possible index of spatially selective cortical processes ("neural efficiency"). Hum Brain Mapp 30:3527-3540, 2009. (C) 2009 Wiley-Liss, Inc.