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Abstract #1271

A wearable 50-channel magnetoencephalography (MEG) system

Ryan Hill1, Elena Boto1, Niall Holmes1, Gillian Roberts1, Jim Leggett1, Zelekha Seedat1, Molly Rea 1, Tim Tierney2, Stephanie Mellor 2, Vishal Shah 3, James Osborne3, Gareth Barnes4, Richard Bowtell1, and Matthew Brookes1
1Sir Peter Mansfield Imaging Centre, University of Nottingham, Nottingham, United Kingdom, 2Wellcome Centre for Human Neuroimaging, UCL, London, United Kingdom, 3QuSpin Inc., Louisville, CO, United States, 4Wellcome Trust Centre for Neuroimaging, UCL, London, United Kingdom

We have a developed a wearable magnetoencephalography (MEG) system comprising 50, miniaturised optical pumped magnetometers (OPMs) fixed on an EEG-type cap. Large, bi-planar field and field-gradient coils sited inside a magnetically shielded room reduce the field around the head to < 1nT. This allows the subject to move their head during experiments without confounding the OPM signals. We report results from a simple finger abduction paradigm and a motor learning experiment in which a subject learns to play the ukulele. The results demonstrate the potential of OPM-MEG to overcome some limitations of neuroimaging investigations using fixed, cumbersome scanners.

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