Hi,

In order to get the three BEMs for 3D source reconstruction for subject X, I used:

mri_watershed -atlas -useSRAS -surf X/bem/watershed/X X/mri/T1.mgz X/bem/watershed/ws

which created the BEMs in X/bem/watershed/, but the inner_skull and the brain were significantly distorted, mainly on the left side (the scalp BEM is okay).

I followed the tutorial on troubleshooting the surfaces in the X/surf/ folder, but that does not address fixing these BEMs, so I was wondering if anybody knows how to get around this problem (should I edit the T1.mgz volume and run again?).

Thank you,

Silviu Podariu UNMC Omaha, NE

P.S. Also, I was wondering if there is a utility to reduce the number of vertices of a given surface (i.e. to make a less precise triangulation) at will. I thought I may use the pial left and right halves greatly reduced (from about 140k vertices to 10k or less) for the brain surface instead of the mri_watershed output.

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