Hi Keith,

this is inevitable when sampling from the volume onto the surface, particularly if the volume maps are blurry. Then a single volume blob will intersect e.g. two banks of a sulcus and show up as two distinct blobs.

cheers, Bruce

On Thu, 11 Sep 2008, Keith Duncan wrote:

Hi FS experts,

I am trying to display a large set of peaks on an inflated brain to illustrate the spread of the peaks over a gyrus & sulcus, similar to what might be done in a meta-analysis. Is there an easy way to do this?

I tried generating a binary mask in 3D (in MNI space) and then converting that to a .w file using mri_vol2surf but some of the peaks seem to be lost and the peaks that do appear, are splodges rather than a neat circle/ellipse/whatever, which makes it look like an activation map.

Thanks in advance!

Keith

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