Re: [Freesurfer] freesurfer for MEG/EEG source imaging

2005-08-10 Thread Daniel Goldenholz
Hello Zhongming 1. Freesurfer can do this, though it is not perfect. It is my understanding that the best (at least here at the NMR center) BEM segmentations can be obtained when running special pulse sequences called FLASH5 in the MRI to better visualize the skull boundaries. Matti can proba

Re: [Freesurfer] freesurfer for MEG/EEG source imaging

2005-08-10 Thread Bruce Fischl
Hi Zhongming, we always generate models of the hemispheres separately. We do generate BEM surfaces, and can downsample. I'll cc Matti Hamalainen who can instruct you on how this can be done. Bruce On Tue, 9 Aug 2005, Zhongming Liu wrote: I am a new user of Freesurfer. My questions are rela

[Freesurfer] freesurfer for MEG/EEG source imaging

2005-08-09 Thread Zhongming Liu
I am a new user of Freesurfer. My questions are related to the head modeling and MEG/EEG source modeling.   Can freesurfer generate the 3-shell boundary element model (BEM): 3 triangulated interfaces of air-scalp, scalp-skull, skull-brain? Is it possible to generate a c