Cited by 274Neural dynamics and brain functionEEG and Brain-Computer InterfacesTranscranial Magnetic Stimulation Studies

Negative covariation between task-related responses in alpha/beta-band activity and BOLD in human sensorimotor cortex: An EEG and fMRI study of motor imagery and movements

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Yuan, Han, Liu, Tao, Szarkowski, Rebecca, Rios, Cristina, Ashe, James, He, Bin·2010·NeuroImage

Abstract

Similar to the occipital alpha rhythm, electroencephalographic (EEG) signals in the alpha- and beta-frequency bands can be suppressed by movement or motor imagery and have thus been thought to represent the "idling state" of the sensorimotor cortex. A negative correlation between spontaneous alpha EEG and blood-oxygen-level-dependent (BOLD) signals has been reported in combined EEG and fMRI (functional Magnetic Resonance Imaging) experiments when subjects stayed at the resting state or alternated between the resting state and a task. However, the precise nature of the task-induced alpha modulation remains elusive. It was not clear whether alpha/beta rhythm suppressions may co-vary with BOLD when conducting tasks involving varying activations of the cortex. Here, we quantified the task-evoked responses of BOLD and alpha/beta-band power of EEG directly in the cortical source domain, by using source imaging technology, and examined their covariation across task conditions in a mixed block and event-related design. In this study, 13 subjects performed tasks of right-hand, right-foot or left-hand movement and motor imagery when EEG and fMRI data were separately collected. Task-induced increase of BOLD signal and decrease of EEG amplitudes in alpha and beta bands were shown to be co-localized at the somatotopic sensorimotor cortex. At the corresponding regions, the reciprocal changes of the two signals co-varied in the magnitudes across imagination and movement conditions. The spatial correspondence and negative covariation between the two measurements were further shown to exist at somatotopic brain regions associated with different body parts. These results suggest an inverse functional coupling relationship between task-induced changes of BOLD and low-frequency EEG signals.

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Authors
Yuan, H., Liu, T., Szarkowski, R., Rios, C., Ashe, J., & He, B.
Affiliations
  • University of Minnesota (US)
  • Veterans Health Administration (US)
Corresponding author
He, Bin
Venue
NeuroImage
Publisher
Elsevier BV
Published
2010-02
Volume
49
Issue
3
Pages
2596-2606
ISSN
1053-8119 (ISSN-L)
OpenAlex
W2029934372
Cited by
274
References
55
Citations by year
2026: 11 · 2025: 20 · 2024: 14 · 2023: 21 · 2022: 14 · 2021: 16 · 2020: 16 · 2019: 19 · 2018: 15 · 2017: 25 · 2016: 18 · 2015: 18 · 2014: 15 · 2013: 20 · 2012: 15
FWCI
5.00
Type
journal article
Language
en
Open access
Locations
  • NeuroImage (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • NIH (RO1EB007920, RO1EB006433, P41RR008079, P30NS057091)
  • NSF (CBET-0933067)
  • NIH Neuro-Physical-Computational Sciences Fellowship (R90 DK070106)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
  • Life Sciences › Neuroscience › Cognitive Neuroscience › EEG and Brain-Computer Interfaces
  • Life Sciences › Neuroscience › Neurology › Transcranial Magnetic Stimulation Studies
Keywords
alpha rhythm, beta band, BOLD signal, sensorimotor cortex, motor imagery, motor movement, somatotopic mapping, cortical source localization
MeSH terms
Adult, Brain Mapping, Electroencephalography, Humans, Image Interpretation, Computer-Assisted, Imagination, Functional Laterality, Magnetic Resonance Imaging, Middle Aged, Movement, Signal Processing, Computer-Assisted, Somatosensory Cortex, Young Adult

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