Spontaneous Slow Fluctuation of EEG Alpha Rhythm Reflects Activity in Deep-Brain Structures: A Simultaneous EEG-fMRI Study.
Spontaneous Slow Fluctuation of EEG Alpha Rhythm Reflects Activity in Deep-Brain Structures: A Simultaneous EEG-fMRI Study.
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DOI：
10.1371/journal.pone.0066869
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发表时间：
2013
期刊：
影响因子：
3.7
通讯作者：
Honda M
中科院分区：
文献类型：
--
作者：
Omata K;Hanakawa T;Morimoto M;Honda M
脑电图 (EEG) 上枕叶 α 节律的出现与大脑新皮质和深部大脑结构的大脑活动相关。为了进一步了解α节律功率波动的机制，我们对人类受试者在静息状态下进行同步脑电图和功能磁共振成像记录，并探索α功率波动与大脑血氧水平依赖（BOLD）信号之间的动态关系。根据20分钟脑电图记录期间α功率时间序列（APTS）的频率特征，我们将APTS分为两个组成部分：快速波动（0.04-0.167 Hz）和慢速波动（0-0.04 Hz）。分析MRI信号与各分量的相关性发现，α功率的慢波波动分量与脑干、丘脑内侧部分和前扣带皮层的BOLD信号变化呈正相关，而快速波动分量与丘脑外侧部分和前扣带皮层相关，但与脑干无关。总之，这些数据表明不同的皮层下结构有助于大脑脑电图α光谱的缓慢和快速调制。
The emergence of the occipital alpha rhythm on brain electroencephalogram (EEG) is associated with brain activity in the cerebral neocortex and deep brain structures. To further understand the mechanisms of alpha rhythm power fluctuation, we performed simultaneous EEGs and functional magnetic resonance imaging recordings in human subjects during a resting state and explored the dynamic relationship between alpha power fluctuation and blood oxygenation level-dependent (BOLD) signals of the brain. Based on the frequency characteristics of the alpha power time series (APTS) during 20-minute EEG recordings, we divided the APTS into two components: fast fluctuation (0.04–0.167 Hz) and slow fluctuation (0–0.04 Hz). Analysis of the correlation between the MRI signal and each component revealed that the slow fluctuation component of alpha power was positively correlated with BOLD signal changes in the brain stem and the medial part of the thalamus and anterior cingulate cortex, while the fast fluctuation component was correlated with the lateral part of the thalamus and the anterior cingulate cortex, but not the brain stem. In summary, these data suggest that different subcortical structures contribute to slow and fast modulations of alpha spectra on brain EEG.
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大脑网络的时尚表征：融合并发的EEG光谱和fMRI图。
影响因子：
5.7
作者：
Bridwell DA;Wu L;Eichele T;Calhoun VD
通讯作者：
Calhoun VD
DOI：
10.1073/pnas.0504136102
发表时间：
2005-07-05
影响因子：
11.1
作者：
Fox, MD;Snyder, AZ;Raichle, ME
通讯作者：
Raichle, ME
影响因子：
5.7
作者：
Gonçalves, SI;de Munck, JC;da Silva, FHL
通讯作者：
da Silva, FHL
影响因子：
5.5
作者：
AKASU, T;GALLAGHER, JP;SHINNICKGALLAGHER, P
通讯作者：
SHINNICKGALLAGHER, P
影响因子：
2.4
作者：
DiFrancesco, Mark W.;Holland, Scott K.;Szaflarski, Jerzy P.
通讯作者：
Szaflarski, Jerzy P.