Re: [Freesurfer] Question regarding computing contrasts with mri_glmfit

2008-05-20 Thread Doug Greve

yep, that looks fine.

doug

Avram Holmes wrote:


All,

I'm just looking for a little advice on constructing fsgd and .mat 
files. I would like to compare a healthy control sample with the data 
from two MDD groups. To do so I made my fsgd file to look like the 
following:


GroupDescriptorFile 1
Title MoneyGame_Subjects
Class Control
Class MDD
Class Anhedonic

Input REWARD111 Control
Input REWARD201 Anhedonic
Input REWARD207 MDD
Input REWARD208 
Anhedonic 

Input REWARD211 
MDD   

Input REWARD212 MDD   

Input REWARD213 
Anhedonic 


Input REWARD215 Anhedonic
Input REWARD277 Control
Input REWARD278 Control


This file results in a design matrix with 3 columns.

I am interested in conducting the following analyses and I wanted to 
check to see if I am coding all of the .mat files correctly.


Controls vs all Patients (1 -.5 -.5)
Anhedonic vs MDD (0 1 -1)
Controls vs Anhedonic (1 0 -1)
Controls vs MDD (1 -1 0)

Thank you in advance for any help you can offer.

Avram

--


Avram Holmes
Department of Psychology
Harvard University
1210 William James Hall  Phone:(617) 495-0790
33 Kirkland Street   Fax:(617) 495-3728
Cambridge, MA 02138, USA Email: [EMAIL PROTECTED]




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--
Douglas N. Greve, Ph.D.
MGH-NMR Center
[EMAIL PROTECTED]
Phone Number: 617-724-2358 
Fax: 617-726-7422


In order to help us help you, please follow the steps in:
surfer.nmr.mgh.harvard.edu/fswiki/BugReporting


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[Freesurfer] Question regarding computing contrasts with mri_glmfit

2008-05-19 Thread Avram Holmes

All,

I'm just looking for a little advice on constructing fsgd and .mat 
files. I would like to compare a healthy control sample with the data 
from two MDD groups. To do so I made my fsgd file to look like the 
following:


GroupDescriptorFile 1
Title MoneyGame_Subjects
Class Control
Class MDD
Class Anhedonic

Input REWARD111 Control
Input REWARD201 Anhedonic
Input REWARD207 MDD
Input REWARD208 
Anhedonic 

Input REWARD211 
MDD   

Input REWARD212 MDD   
   
Input REWARD213 
Anhedonic 


Input REWARD215 Anhedonic
Input REWARD277 Control
Input REWARD278 Control


This file results in a design matrix with 3 columns.

I am interested in conducting the following analyses and I wanted to 
check to see if I am coding all of the .mat files correctly.


Controls vs all Patients (1 -.5 -.5)
Anhedonic vs MDD (0 1 -1)
Controls vs Anhedonic (1 0 -1)
Controls vs MDD (1 -1 0)

Thank you in advance for any help you can offer.

Avram

--


Avram Holmes
Department of Psychology
Harvard University
1210 William James Hall  Phone:(617) 495-0790
33 Kirkland Street   Fax:(617) 495-3728
Cambridge, MA 02138, USA Email: [EMAIL PROTECTED]


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