phantom090715_BrainampDBS_20150709_01.ds.zip

This dataset was acquired in an experiment aimed at testing the effects of Deep Brain Stimulation (DBS) artefacts on MEG recordings using MEG phantom. The experimental procedures are described and the results are reported in the following publication: Oswal A, Jha A, Neal S, Reid A, Bradbury D, Aston P, Limousin P, Foltynie T, Zrinzo L, Brown P, Litvak V. Analysis of simultaneous MEG and intracranial LFP recordings during Deep Brain Stimulation: a protocol and experimental validation. J Neurosci Methods. 2016 Mar 1;261:29-46. doi: 10.1016/j.jneumeth.2015.11.029. Epub 2015 Dec 14. We tested different combinations of presence of ferromagnetic connection wires, movements designed to emulate breathing and heart-beat related artefacts in real patients (see paper for details) and DBS which could be bipolar (only inducing weak artefacts) and monopolar (inducing severe artefacts). We tested 3 stimulation frequencies: 5Hz, 20Hz and 130Hz The datasets included here are as follows: phantom090715_BrainampDBS_20150709_01.ds.zip -wires+ , movement-, stimulation-phantom090715_BrainampDBS_20150709_02.ds.zip - wires- , movement-, stimulation- %This is a clean dataset that can be used as a referencephantom090715_BrainampDBS_20150709_03.ds.zip - wires- , movement-, stimulation+130Hz monopolarphantom090715_BrainampDBS_20150709_04.ds.zip - wires- , movement+, stimulation+130Hz monopolarphantom090715_BrainampDBS_20150709_05.ds.zip - wires- , movement-, stimulation+130Hz monopolarphantom090715_BrainampDBS_20150709_06.ds.zip - wires+ , movement-, stimulation+130Hz monopolarphantom090715_BrainampDBS_20150709_07.ds.zip - wires+ , movement+, stimulation+130Hz monopolar %This is the most realistic dataset for clinical frequency DBSphantom090715_BrainampDBS_20150709_08.ds.zip - wires+ , movement+, stimulation-phantom090715_BrainampDBS_20150709_09.ds.zip - wires+ , movement-, stimulation+20Hz monopolarphantom090715_BrainampDBS_20150709_10.ds.zip - wires+ , movement-, stimulation+5Hz monopolarphantom090715_BrainampDBS_20150709_11.ds.zip - wires+ , movement+, stimulation+5Hz monopolarphantom090715_BrainampDBS_20150709_12.ds.zip - wires+ , movement+, stimulation+20Hz monopolarphantom090715_BrainampDBS_20150709_13.ds.zip - wires+ , movement+, stimulation+130Hz bipolarphantom090715_BrainampDBS_20150709_14.ds.zip - wires+ , movement+, stimulation+20Hz bipolarphantom090715_BrainampDBS_20150709_15.ds.zip - wires+ , movement+, stimulation+5Hz bipolarphantom090715_BrainampDBS_20150709_16.ds.zip - wires- , movement+, stimulation+20Hz monopolarphantom090715_BrainampDBS_20150709_17.ds.zip - wires- , movement+, stimulation+5Hz monopolarphantom090715_BrainampDBS_20150709_18.ds.zip - wires- , movement-, stimulation+5Hz monopolarphantom090715_BrainampDBS_20150709_20.ds.zip - wires- , movement-, stimulation+20Hz monopolar phantom.mov - movie showing the phantom movementreadme.txt - this file The MEG datasets also have accompanying BrainVision data sets where a copy of the 27 Hz sinusoid waveform fed to the phantom 'brain' source was stored. Since these are not required for testing artefact removal methods and using them would require merging with MEG we do not share them here but they could be provided on request. This work was supported by the Medical Research Council and the National Institute for Health Research University College London Hospitals Biomedical Research Centre.The UK MEG community is supported by Medical Research Council grant MR/K005464/1. The Wellcome Trust Centre for Neuroimaging is supported by core funding from the Wellcome Trust 091593/Z/10/Z. Please contact Vladimir Litvak [e-mail] for any additional information