What type of study is this?

This is a Experimental Study study.

September 17, 2025

Simultaneous Multi-channel Electroencephalogram (EEG) and resting-state functional MRI (rsfMRI)

Key Points

Simultaneous recording achieved artifact-free neural activity, ensuring accurate mapping of brain connectivity.
Using 16-channel electrodes, the study effectively demonstrated the feasibility of integrated EEG and rsfMRI.
The approach preserved the integrity of rsfMRI networks, particularly in the cortical and hippocampal regions.
This method lays a solid foundation for future studies integrating EEG and fMRI data.

Abstract

Motivation: While resting-state functional MRI (rsfMRI) can effectively map brain-wide functional connectivity networks through blood-oxygen-level-dependent (BOLD) signals, examining the neural basis of rsfMRI requires concurrent measurements of neural activity. Goal(s): To demonstrate the feasibility of simultaneous multi-channel EEG and rsfMRI experiments, while minimizing the artifacts in fMRI and EEG data. Approach: We implemented EEG recordings using skull-mounted MRI-compatible 16-channel electrodes, enabling concurrent measurements of neural activity and rsfMRI BOLD signals. Results: We showed artifact-free neural activity recordings without compromising the ability to map and quantify typical rsfMRI networks such as the homotopic interhemispheric connectivity in cortical, hippocampus, and subcortical regions. Impact: Our simultaneous recording approach successfully showed the feasibility of acquiring high-quality, artifact-free multi-channel EEG and fMRI data, establishing a robust methodological foundation for future integrated EEG-fMRI experiments.

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