Juvenile myoclonic epilepsy shows increased posterior theta, and reduced sensorimotor beta resting connectivity.
Juvenile myoclonic epilepsy shows increased posterior theta, and reduced sensorimotor beta resting connectivity.
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DOI:
10.1016/j.eplepsyres.2020.106324
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发表时间:
2020-07
影响因子:
2.2
通讯作者:
Hamandi K
中科院分区:
文献类型:
--
作者:
Routley B;Shaw A;Muthukumaraswamy SD;Singh KD;Hamandi K
We investigated whole brain source space connectivity in JME using across standard MEG frequency bands. Connectivity was increased in posterior theta and alpha bands in JME, and decreased in sensorimotor beta band. Our findings highlight altered interactions between posterior networks of arousal and attention and the motor system in JME. Widespread structural and functional brain network changes have been shown in Juvenile Myoclonic Epilepsy (JME) despite normal clinical neuroimaging. We sought to better define these changes using magnetoencephalography (MEG) and source space connectivity analysis for optimal neurophysiological and anatomical localisation. We consecutively recruited 26 patients with JME who underwent resting state MEG recording, along with 26 age-and-sex matched controls. Whole brain connectivity was determined through correlation of Automated Anatomical Labelling (AAL) atlas source space MEG timeseries in conventional frequency bands of interest delta (1−4 Hz), theta (4−8 Hz), alpha (8−13 Hz), beta (13−30 Hz) and gamma (40−60 Hz). We used a Linearly Constrained Minimum Variance (LCMV) beamformer to extract voxel wise time series of ‘virtual sensors’ for the desired frequency bands, followed by connectivity analysis using correlation between frequency- and node-specific power fluctuations, for the voxel maxima in each AAL atlas label, correcting for noise, potentially spurious connections and multiple comparisons. We found increased connectivity in the theta band in posterior brain regions, surviving statistical correction for multiple comparisons (corrected p < 0.05), and decreased connectivity in the beta band in sensorimotor cortex, between right pre- and post- central gyrus (p < 0.05) in JME compared to controls. Altered resting-state MEG connectivity in JME comprised increased connectivity in posterior theta – the frequency band associated with long range connections affecting attention and arousal - and decreased beta-band sensorimotor connectivity. These findings likely relate to altered regulation of the sensorimotor network and seizure prone states in JME.
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DOI:
10.1093/cercor/bhw157
发表时间:
2016-08
期刊:
Cerebral cortex (New York, N.Y. : 1991)
影响因子:
--
作者:
Fan L;Li H;Zhuo J;Zhang Y;Wang J;Chen L;Yang Z;Chu C;Xie S;Laird AR;Fox PT;Eickhoff SB;Yu C;Jiang T
通讯作者:
Jiang T
影响因子:
5.7
作者:
Colclough GL;Woolrich MW;Tewarie PK;Brookes MJ;Quinn AJ;Smith SM
通讯作者:
Smith SM
影响因子:
4.7
作者:
Bastiaansen, MCM;Knösche, TR
通讯作者:
Knösche, TR
影响因子:
2.2
作者:
Clemens, B;Szigeti, G;Barta, Z
通讯作者:
Barta, Z
影响因子:
2.2
作者:
Clemens, B.;Puskas, S.;Fekete, I.
通讯作者:
Fekete, I.