Hi everyone
I need to import EEG coordinates (obtained with Polhemus system in ASCII format) in the FreeSurfer workspace. My final aim is characterize small areas of the cortical surface (exactly the regions underlaying my sensors position) with typical parameters of FreeSurfer (cortical thikness,...) .
I have read some papers reporting partial solutions to my needs. All of them used matlab with some exported files of FreeSurfer and registered them with the coordinates of the EEG or MEG analysis. I will like to have an opposite solution: import the file with the coordinates of the EEG into the FreeSufer workspace, maybe using the Load/overlay /registration menu of FreeSurfer or another that you can suggest me.
I guess my coordinates file needs some transformations before import it to the FreeSurfer workspace
thanks in advance
abel
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