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The voxelwise threshold will determine the cluster extent threshold. It is not possible to calculate a cluster extent threshold independent of the voxelwise threshold.

-Michael

On Mon, May 25, 2009 at 3:49 AM, Dorian P. <alb.net@gmail.com> wrote:
Hi SPM list,

I need some help on two SPM hacks.

1.
Does anybody have a hack to threshold both at voxel level (normal SPM)
and at cluster level at the same time? (I.e. voxel threshold 0.0005 +
cluster threshold 0.05)

2.
And does anybody have a hack to use a ROI as mask? At present SPM can
mask only with another contrast. There was a modified version of
spm_getSPM by Jan Glascher, but when I looked inside I saw major
differences from the actual function of SPM5.
https://www.jiscmail.ac.uk/cgi-bin/wa.exe?A2=ind0812&L=SPM&P=R43519


Thank you for any help.
Dorian



--
Research Associate
Gazzaley Lab
Department of Neurology
University of California, San Francisco