Hi All. I'm working with MEG data and I want to coregister it to the T1w_acpc_dc_restore.nii.gz processed structure scan as recommended by the reference manual.
I downloaded the MEG data for the subjects who had resting state MEG data, but I discovered that 16 of them do not have a T1w_acpc_dc_restore.nii.gz file. Is there a reason why these subjects don't have this structure file? One of the subjects (725751) don't have any MRI data at all, so I suppose that is an excellent reason for not having the structure file, but I am a little confused by the others. Since almost a quarter of the subjects with MEG data don't have the T1w_acpc_dc_restore.nii.gz file, I would like to use an alternative. Every subject that has a MRI scan has a T1.mgz file, so I think I can use this file instead, but I have a few questions that I have not found answers to in the documentation. First, what coordinate system does the T1.mgz file (i.e. s3://hcp-openaccess/HCP/subjectID/T1w/subjectID/mri/T1.mgz) use? I think I would relate it to the MEG data using the vox07mm transforms that come with the MEG data, but I haven't found confirmation of that in the documentation. Second, what sort of preprocessing has been done to the T1.mgz file? Have the axes been realigned? Has it been mapped to fit any standard models? Thank you for your time, Gregory Butron _______________________________________________ HCP-Users mailing list [email protected] http://lists.humanconnectome.org/mailman/listinfo/hcp-users
