Correlation between Infraslow-Electrical Brain Activity and Resting-State Functional MRI Connectivity in Patients with Chronic Cerebral Ischaemia

被引：0

作者：

Ponomareva N.V. ^{[1
]}

Fokin V.F. ^{[1
]}

Medvedev R.B. ^{[1
]}

Lagoda O.V. ^{[1
]}

Tanashyan M.M. ^{[1
]}

Konovalov R.N. ^{[1
]}

Krotenkova M.V. ^{[1
]}

机构：

[1] Research Centre of Neurology, Moscow

来源：

Human Physiology | 2021年 / 47卷 / 8期

关键词：

chronic cerebral ischaemia; connectivity; neural modulation; neural networks; resting-state functional MRI; slow-wave brain activity;

D O I：

10.1134/S0362119721080107

中图分类号：

学科分类号：

摘要：

Abstract: The problem of studying the relationship of infraslow electrical activity with neural networks has gained importance due to the new facts on the modulation mechanisms of these networks. The aim of this study was to explore the correlation between the brain direct current (DC) potential level and the resting-state neural connectivity in patients with chronic cerebral ischaemia (CCI). In 55 patients with CCI (mean age 66.3 ± 0.85 years), Millivolt scale brain DC potentials were recorded using non-polarizable electrodes were compared with resting state brain functional MRI (fMRI) connectivity. The bipolar DC potential difference recorded between the sagittal frontal and occipital areas was found to be associated with different connectivity of the brain networks. We examined the fMRI connectivity associated with the bipolar difference of the DC potential level between the frontal and occipital areas. The positive difference in the DC potential was associated with higher connectivity of cerebellum with the frontal and occipitotemporal regions. A small number of connections, corresponding to the negative difference in the DC potential level, were present between the cerebellum and the occipital cortex, mainly in the left hemisphere. The results suggest the that in patients with CCI, the infraslow electrical brain activity has a modulating effect on the neural networks and individual functional connections. © 2021, Pleiades Publishing, Inc.

引用

页码：847 / 853

页数：6

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