Hi all,
I'm looking for confirmation on how to interpret significant contrasts
(COPEs) of ICA components from Melodic. I ran tensorial ICA on 18
participants and isolated a component that appeared positive (red) on
output. I also got output for significant task-related effects (COPEs
from single-run Feat jobs) as part of the analysis. This parameter
reflects a contrasts of high-arousal and low-arousal conditions in my
experiment (in the Feat GUI, high arousal was coded as +1 and low
arousal was coded as -1). The output on the web page for this contrast
was as follows:
COPE(3): z = 10.65, p < 0.00000
Given that the z-value is positive, is it correct to say that this
particular ICA component was stronger (more significant) for the high
arousal (coded in Feat as +1) than the low-arousal (coded in Feat as -1)
conditions?
Thanks - John
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