I have recently started to use FS to generate cortical surfaces for boundary element modelling in EEG source localization. In particular I would like to use the pial surface generated by FS. I have three problems:
1: I can only get FS to generate individual hemispheres. For the BEM, I need a single, connected, mesh for the entire brain. Is there a way to get this (perhaps by fooling FS into not disconnecting the hemispheres early in the segmentation process)?
2: The white/gray boundary mesh is topologically correct (no bridges / handles / holes etc..). Is the pial surface mesh also correct?
3: Is there a way to generate the volume inside the pial surface? That is - can I flood fill the pial surface in some way to extract the voxels that lie inside it as 3d volume?
Many thanks
Alex
A.R. Wade Ph.D. Associate Scientist The Smith-Kettlewell Eye Research Institute 2318 Fillmore Street San Francisco, CA 94115
tel. 415 345 2083 fax. 309 416 6533