Hi Eleonora, the easiest way to do this is to create a label of the electrodes, then use mri_label2label to map them to the nearest pial vertices. This ability to map volume labels to nearest surface vertices is broken in the current version. I've fixed this and put a new version here:
ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/mri_label2label Run it with --help and use Example 4. doug On 04/02/2013 08:19 AM, Eleonora Maggioni wrote: > Hi Freesurfer experts, > I am new to FreeSurfer and I have a question. > I have markers of EEG electrodes on the T1 image of a subject and I > want to project them from the scalp to his pial surface (that I > reconstructed using the standard procedure). > To do so, I manually selected the central point of each marker in > tkmedit and I defined a control point. Then I red that control point > with tksurfer on the corresponding pial surface. This should be the > projection to the pial surface: is this procedure correct? If yes, in > which coordinate system is the projection made? > Thank you in advance, > Kind regards, > > -- > Eleonora Maggioni > > BioEngineering PhD student > Politecnico di Milano > Istituto E.Medea, Bosisio Parini (LC) > > > > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer -- Douglas N. Greve, Ph.D. MGH-NMR Center gr...@nmr.mgh.harvard.edu Phone Number: 617-724-2358 Fax: 617-726-7422 Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting FileDrop: www.nmr.mgh.harvard.edu/facility/filedrop/index.html Outgoing: ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/ _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail.
