Mne-Pythyon Coregistration
- 1. Coregistration in mne-python Subjects with MRI
- 2. Overview Select MRI Scale the MRI 3D View Set MRI Fiducials Find Head Shape to MRI Coregistration Select Raw File Control the 3D View Save the Result
- 3. Input Files • Specify the directory containing MRIsubjects (subjects_dir) • Select the Raw file for which to do the coregistration • If it is not automatically selected, select the MRI subject • If a fiducials file is found in the MRI directory it is automatically loaded and you can skip the next slide. If not, load a file manually, or specify the fiducials as described on the next slide.
- 4. Fiducials • Select the fiducial you want to modify, and then click on the head model to specify the position. Fiducials are displayed as small colored spheres. • When all the fiducials are specified, save the positions so they can be loaded in the future. • Lock the fiducials to proceed to the coregistration.
- 5. Coregistration • Since the MRI stems from the same subject and thus has the right size, make sure scaling is off (“No scaling”) • Use LPA and RPA for an initial approximate alignment
- 6. Coregistration • In case the head shape contains outlier points, head shape points can be omitted based on their distance from the MRI head surface (for the sample data, 10 mm is a good distance)