Simultaneous EEG-fMRI dataset including 1.6mm and 0.8mm-resolution 7T fMRI acquisitions in 8 healthy participants at rest

This dataset contains functional human brain recordings combining scalp electroencephalography (EEG) and functional magnetic resonance imaging (fMRI) at 7 Tesla, acquired simultaneously, in a cohort of 8 healthy adult participants at rest.

The data are provided after artifact correction and pre-processing, and are ready to undergo resting-state analyses.

The dataset includes:

For every participant:

• One 8-min EEG-fMRI run with fMRI at 1.6mm resolution / 1.05s TR, and an EEG cap adapted in-house;
• One 8-min EEG-fMRI run with fMRI at 0.8mm resolution / 3.52s TR, and an EEG cap adapted in-house;

For 5 participants:

• One 8-min EEG-fMRI run with fMRI at 1.6mm resolution / 1.05s TR, and a prototype EEG cap from Brain Products GmbH (BrainCap MR7Flex);
• One 8-min EEG-fMRI run with fMRI at 0.8mm resolution / 3.52s TR, and a prototype EEG cap from Brain Products GmbH (BrainCap MR7Flex);

For every run:

• Header information describing the MRI and EEG acquisition;
• Head motion parameters estimated for the fMRI acquisition;
• Several brain parcellations: brain mask, aparc+aseg, GM/WM/CSF, main cortical areas, Yeo 7 networks;

We strongly recommend consulting the accompanying file data_info.txt, for detailed information and important notes.

The data acquisition, processing steps and general data quality are extensively described in the following article:

C. Sainz Martinez, J. Wirsich, C. Jäger, T. Warbrick, S. Vulliémoz, M. Lemay, J. Bastiaansen, R. Wiest, J. Jorge. An optimized framework for simultaneous EEG-fMRI at 7T enabling safe, high-quality human brain imaging with millisecond temporal resolution and sub-millimeter spatial resolution. Imaging Neuroscience 2025. DOI: 10.1162/IMAG.a.983