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
Website: http://www.martinos.org/~mclaren
Office: (773) 406-2464
=====================
This e-mail contains CONFIDENTIAL INFORMATION which may contain PROTECTED
HEALTHCARE INFORMATION and may also be LEGALLY PRIVILEGED and which is
intended only for the use of the individual or entity named above. If the
reader of the e-mail is not the intended recipient or the employee or agent
responsible for delivering it to the intended recipient, you are hereby
notified that you are in possession of confidential and privileged
information. Any unauthorized use, disclosure, copying or the taking of any
action in reliance on the contents of this information is strictly
prohibited and may be unlawful. If you have received this e-mail
unintentionally, please immediately notify the sender via telephone at (773)
406-2464 or email.

On Mon, May 7, 2012 at 2:54 PM, Mike Sugarman <[log in to unmask]> wrote:

Hell0 SPM Experts,

This may be a relatively elementary question, but I would appreciate any assistance available. I am working with a library of task-activated PET scans, and I have a contrast of task condition (experimental > control). I also have two groups (patients and controls), and I would like to compare this contrast across groups. I have been successfully able to view the contrast within each group, but am puzzled by how to analyze the between-groups comparison. How would I set up my design and/or contrasts to best observe this?

Many thanks in advance,
-Mike Sugarman