Re: [Freesurfer] Still not clear about average curvature

2009-06-02 Thread Douglas N Greve
When specifying a FWHM, they may end up being a little bit different because the distance between the vertices is more on the pial than on the white, so you don't need as many iterations to get the same FWHM. Having said that, the difference is pretty darn small between white and pial. doug

Re: [Freesurfer] Still not clear about average curvature

2009-06-02 Thread Bruce Fischl
Hi yczhang, the smoothing only considers the topology of the surface, so smoothing on the white and the pial are equivalent. cheers, Bruce On Tue, 2 Jun 2009, Zhangyuanchao wrote: I am still not quite clear about the averaging of curvature. Sorry about that.   could you tell me exactly wh

[Freesurfer] Still not clear about average curvature

2009-06-01 Thread Zhangyuanchao
I am still not quite clear about the averaging of curvature. Sorry about that.   could you tell me exactly which function I should use, and How should I choose each parameter?     First, I get the curvature value of the pial surface, I think I should average the curvature value on the pial surfac