Dear nlobaugh,
I am trying to use the PLSgui to perform a longitudinal analysis of structural MRI gray matter images for music training with the " Seed Pls " method. I have 27 participants in my control group, and 29 participants in my training group. The training lasted for 6 months. For these 2 groups, each participant was performed 3 times MRI scans (at the beginning of the training, the ends of the 6 months training, and 9 months after the end of the training, respectively). How should I array the datamats to perform this analysis?
According to your proposal, time1, time2 and time3 should be specified as conditions named gm1, gm2 and gm3 for each group. Over all, I set up my datamats as follows:
Under C:\PLSdata\Control, I have the following:
C001_gm1.nii
C001_gm2.nii
C001_gm3.nii
C002_gm1.nii
C002_gm2.nii
C002_gm3.nii
...
C027_gm1.nii
C027_gm2.nii
C027_gm3.nii
Under C:\PLSdata\Train, I have the following:
T001_gm1.nii
T001_gm2.nii
T001_gm3.nii
T002_gm1.nii
T002_gm2.nii
T002_gm3.nii
...
T029_gm1.nii
T029_gm2.nii
T029_gm3.nii
Is it right? .
or Is it like I should make a datamat that include all subjects' data of control or training group in time 1 as group1 and time 2 as group2, and so on? As a result, I can get 6 groups, in which 3 groups correspond to the 3 timepoints data of control, and another 3 groups correspond to the 3 timepoints data of training.
Thanks in advance for any advice.
guo o
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