High frequency somatosensory MEG: evoked responses, FreeSurfer reconstruction

This dataset contains somatosensory evoked responses recorded with Elekta TRIUX magnetoencephalography (MEG) system. The purpose of the measurements was to examine high-frequency (HF) somatosensory responses. To this end, a large number of responses (couple of thousand) were recorded with a short interstimulus interval (randomized between 300-350 ms). A constant-current electric stimulator was used, with the electrodes placed around the median nerve at the right wrist. The magnitude of the current was individually determined so that the stimulation was slightly below motor threshold; it was approximately 7 mA. The length of the current pulse was set at 200 microseconds.

Measurements from two subjects are included. The dataset also contains anatomical MRIs and FreeSurfer reconstructions. Only evoked (averaged) MEG data is included; raw MEG data is in a separate dataset at https://doi.org/10.5281/zenodo.889295