Click Results, click through the buttons, select define new contrast.

Make the contrast [1 -1] or [-1 1] depending on what you want to test.

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 Tue, Oct 4, 2011 at 11:14 AM, ramtilak gattu <[log in to unmask]> wrote:

Thank you all for the input. 

I have tried loading the images in 3d format as group 1 and group 2 , when I ran it it produces a SPM.mat file but not a t-map. I would be glad if someone would  point me how to generate a t-map between these 2 groups using SPM.mat.

Thanks

Regards

Tilak

On Tue, Oct 4, 2011 at 9:33 AM, MCLAREN, Donald <[log in to unmask]> wrote:

It handles 4D files, you just need to select all the frames. (e.g. 1, 2 ,3, 4, etc.)

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
=====================
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 Tue, Oct 4, 2011 at 5:27 AM, Cyril Pernet <[log in to unmask]> wrote:

Hi Tilak

Hello all,

Could anyone please help me , how to do a two tail t-test between a control group ( n=18) and patient group (n=15)images which are already in the standard space.

stats --> 2nd level --> 2 samples t-tests (gp are independent and set unequal variance)

I have created a 4d file for the control group and another 4d file for the patient group. I would like to generate a two tail t- map for these groups.

not sure it handles 4D never tried, if not split into series of 3D

Cyril

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Thanks

Regards
Tilak

Ramtilak Gattu M.S
Research Assistant
MR Research Facility
Wayne State University
ph:  313-993-8896 (MRRF-office)
      313-745-2487 (MS-office)