Laboratory of Biophysics, Department of Research and Education, Taipei Veterans General Hospital, Taipei 112, Taiwan.
Neurosci Lett. 2011 Feb 25;490(2):96-100. doi: 10.1016/j.neulet.2010.12.034. Epub 2010 Dec 21.
This study investigated the effect of body position on the electroencephalogram (EEG) and autonomic nervous modulation, and the relationship between them using spectral analysis of EEG and heart rate variability (HRV). All healthy volunteers recruited had their electrocardiogram and EEG recorded for power spectral analysis. We found that when changing position from supine to upright, the EEG spectral components below the α band, such as δ and θ bands, were significantly decreased while the EEG spectral components above the α band, such as β, γ and ω bands, were significantly increased in both scalps. Correlation analysis showed that the θ rhythm of both scalps might be associated with the control of HR, the α and β rhythms of right scalp might be associated with vagal modulation, and the γ rhythm of left scalp might be associated with sympathetic modulation of the subject. Thus, some EEG components might be associated with the autonomic nervous modulation of the subject during positional change. There might be a mechanism located in the brain-stem which jointly controls both autonomic influences on heart rate and EEG activation.
本研究使用脑电（EEG）和心率变异性（HRV）的频谱分析，探讨体位变化对 EEG 和自主神经调节的影响及其之间的关系。所有入组的健康志愿者均记录心电图和 EEG 进行功率谱分析。我们发现，从仰卧位变为直立位时，头皮上下的 EEG 频谱成分均发生了显著变化：低于α波段的 δ 和 θ 波段显著减少，高于 α 波段的 β、γ 和 ω 波段显著增加。相关分析显示，双侧θ节律可能与 HR 控制有关，右侧头皮的α和β节律可能与迷走神经调制有关，左侧头皮的γ节律可能与自主神经调制有关。因此，一些 EEG 成分可能与体位变化时受试者的自主神经调节有关。可能存在一个位于脑干的机制，共同控制心率的自主神经影响和 EEG 激活。
