Hi
So there are 2 groups both with time 1 and time 2 fMRI data.
Please see the attached EV and Contrast images.
(I used days instead of years for age, so you will see quite large numbers)
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Here are explanations of EV1 and EV2:
[EV1 ]
- (participant1's age at time1)
participant1's age at time2
..
..etc
[EV2]
So I just multiplied -1 to the values of EV1 in group2, and enter group1's EV1 values to EV2.
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And now, I am not sure about the contrasts…
so for the contrast3 EV2=1 and all the other EV=0
so for the cotntrast4 EV2=-1 and all the other EV=0
I guess the interpretation could be:
contrast3: group1 has larger increase of activity from time1 to time2
contrast4: group2 has larger increase of activity from time1 to time2
Thanks so much!!!
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