The Open MEG Archive (OMEGA)


  • First open data repository fully dedicated to MEG

  • Contains data in raw and processed forms, including source image volumes: 184 participants, 255 resting-state MEG records: 150 from healthy controls, 34 from patient volunteers (ADHD, chronic pain, etc.)

  • Current focus in on resting-state, but task data can also be contributed

  • OMEGA will continue to expand, with contributions from the scientific community. 

Welcome to OMEGA

In contrast with some other imaging modalities, there is presently a scarcity of fully open resources in magnetoencephalography (MEG) data available to the neuroimaging community. The Open MEG Archive (OMEGA) is the fruit of a collaborative effort by the McConnell Brain Imaging Centre and the Université de Montréal to build a centralised repository in which to regroup MEG data in raw and processed form, for open dissemination.

This free-access continuously expanding repository also contains anatomical MRI volumes, demographic and questionnaire information, and eventually will feature other forms of electrophysiological data (e.g., EEG, field and cell recordings). OMEGA features the technological framework for multi-centric data aggregation, and is amongst the largest freely available resting-state MEG datasets presently available.

Everyone can access and use the data for research and educational purposes. We only require that every outcome (papers, slides, posters, websites, etc.) cites the seminal open-access journal article introducing the project - thank you!

G. Niso, C. Rogers, J.T. Moreau, L-Y. Chen, C. Madjar, S. Das, E. Bock, F. Tadel, A.C. Evans, P. Jolicoeur, S. Baillet, OMEGA: The Open MEG Archive, NeuroImage, 124B(1) Jan 2016, pp 1182-1187, ISSN 1053-8119.

Consult the OMEGA Management Framework for further information.  


Register here to get immediate access to OMEGA.   
















A strategic initiative of
the Quebec Bioimaging Network