HTS SQUID-based on-scalp MEG

NatMEG has a long history with on-scalp MEG. In collaboration with Chalmers University and the University of Gothenburg we tested and benchmarked on-scalp MEG systems developed there. The Chalmers on-scalp MEG system uses HTS SQUID sensors, which work similar to the LTS SQUIDs used in conventional MEG but operate at significantly higher temperature. As a result they can be placed as close as 1 mm from the scalp. Our benchmarking recordings included somatosensory responses to electrical and tactile stimulation as well as the first on-scalp MEG recording of epileptic activity.