Steinberg Fabian, Pixa Nils Henrik, Doppelmayr Michael
Johannes Gutenberg University Mainz, Institute of Sport Science, Department of Sport Psychology, Germany.
Johannes Gutenberg University Mainz, Institute of Sport Science, Department of Sport Psychology, Germany.
Physiol Behav. 2017 Oct 1;179:90-98. doi: 10.1016/j.physbeh.2017.05.028. Epub 2017 May 26.
Little is known regarding cortical responses to sustained breath-holding (BH) in expert apnoea divers. The present study therefore investigated electroencephalographic (EEG) alpha activity and asymmetries in apnoea divers (experts) compared to non-divers (novices). EEG of 10 apnoea and 10 non-divers were recorded in the laboratory for either four minutes or for two minutes of BH. Alpha activity and alpha asymmetry (i.e. hemispherical EEG differences) were calculated and compared between expertise level and BH duration. Alpha amplitude in experts significantly decreased at four minutes of BH compared to resting activity, while alpha amplitude significantly decreased in novices only at centro-parietal regions. Alpha-asymmetry analysis revealed that the experts' decrease in alpha at the end of BH was different in the frontal electrodes with the left prefrontal cortex activity higher than that in the right prefrontal cortex. This lateralized pattern reflected differential prefrontal processing of the unique psycho-physiological state of BH.
关于专业屏气潜水者对持续屏气（BH）的皮层反应，人们了解甚少。因此，本研究调查了屏气潜水者（专家）与非潜水者（新手）相比的脑电图（EEG）α活动和不对称性。在实验室中记录了10名屏气潜水者和10名非潜水者在屏气4分钟或2分钟时的脑电图。计算并比较了专业水平和屏气持续时间之间的α活动和α不对称性（即半球脑电图差异）。与静息活动相比，专家在屏气4分钟时α振幅显著降低，而新手仅在中央顶叶区域α振幅显著降低。α不对称性分析显示，屏气结束时专家的α降低在额叶电极上有所不同，左前额叶皮层活动高于右前额叶皮层。这种侧向化模式反映了前额叶对屏气独特心理生理状态的不同处理。
