Yes. Under the explicit mask option when you set up the model.

Best Regards, Donald McLaren
=================
D.G. McLaren, Ph.D.
Postdoctoral Research Fellow, GRECC, Bedford VA
Research Fellow, Department of Neurology, Massachusetts General Hospital and Harvard Medical School
Office: (773) 406-2464
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On Thu, May 26, 2011 at 9:39 PM, hekmatyar <[log in to unmask]> wrote:
Hello SPMers
When I do statistical analysis without masking the outer tissue, I used to
see lot of activations from outer tissue, Is there any way to apply mask
explicitly during Ist level statistical analysis?
Please let me know
Thanks
Shah