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EEG Alpha Power Modulation of fMRI Resting-State Connectivity

Open access
Scheeringa, René, Petersson, Karl Magnus, Kleinschmidt, Andreas, Jensen, Ole, Bastiaansen, Marcel C.M.·2012·Brain Connectivity

Abstract

In the past decade, the fast and transient coupling and uncoupling of functionally related brain regions into networks has received much attention in cognitive neuroscience. Empirical tools to study network coupling include functional magnetic resonance imaging (fMRI)-based functional and/or effective connectivity, and electroencephalography (EEG)/magnetoencephalography-based measures of neuronal synchronization. Here we use simultaneously recorded EEG and fMRI to assess whether fMRI-based connectivity and frequency-specific EEG power are related. Using data collected during resting state, we studied whether posterior EEG alpha power fluctuations are correlated with connectivity within the visual network and between the visual cortex and the rest of the brain. The results show that when alpha power increases, BOLD connectivity between the primary visual cortex and occipital brain regions decreases and that the negative relation of the visual cortex with the anterior/medial thalamus decreases and the ventral-medial prefrontal cortex is reduced in strength. These effects were specific for the alpha band, and not observed in other frequency bands. The decreased connectivity within the visual system may indicate an enhanced functional inhibition during a higher alpha activity. This higher inhibition level also attenuates long-range intrinsic functional antagonism between the visual cortex and the other thalamic and cortical regions. Together, these results illustrate that power fluctuations in posterior alpha oscillations result in local and long-range neural connectivity changes.

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Metadata

Authors
Scheeringa, R., Petersson, K. M., Kleinschmidt, A., Jensen, O., & Bastiaansen, M. C. M.
Venue
Brain Connectivity
Published
2012-10
Volume
2
Issue
5
Pages
254-264
ISSN
  • 2158-0014 (ISSN-L)
  • 2158-0022
OpenAlex
W1981607691
Cited by
199
References
24
FWCI
5.99
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: EEG Alpha Power Modulation of fMRI Resting-State Connectivity. https://app.cochat.ai/papers/10.1089/brain.2012.0088
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Scheeringa, R., Petersson, K. M., Kleinschmidt, A., Jensen, O., & Bastiaansen, M. C. M. (2012). EEG Alpha Power Modulation of fMRI Resting-State Connectivity. Brain Connectivity. https://doi.org/10.1089/brain.2012.0088

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