Hi all
Given two conditions A and B.
In situation 1, I perform group analysis one sample t-test on A and B
"separately". So I got activations for A and B.
In situation 2, I put A and B in "one group analysis". I conduct two sample
t-test, paired t-test, or full-factorial (one factor, two level), the
results were similar. However, The activations for A and B in "one group
analysis" are largely different from those by "separate" one sample t-test,
not only the significance level, even the activation patterns look different.
I really confused. Can somebody explain the reason for me? I think there is
no problem to get activation of each condition with one sample t-test, but I
have no idea what happened when put multiple conditions in one group analysis.
Thanks
Xiang
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