hello，
I'm considering comparing the source differences between left and right hemisphere within same experimental condition and same time window, using paired t-test. (for example, brain activation of left insular VS activation of right insular)
I referred to official tutorials, but that was comparing between different experimental conditions. (different with my task design; my design only has 1 condition)
And I also referred to this topic (Comparing two hemispheres) , but I don't understand the steps.
Is there anyone who can help me with the analyzing steps?
You can do that by using Scouts:
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Create scouts for the regions that you want to study: RegionA and RegionB
https://neuroimage.usc.edu/brainstorm/Tutorials/Scouts
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On the source files for each trial, use the process Extract > Scout time series to extract the time series for the RegionA scout
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Repeat step 2 for RegionB
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At this point you should have a 2 matrix files for each trial, one with the time series for scout RegionA and one for the scout RegionB. And you can run the paired t-test as indicated in the Statistics tutorial: https://neuroimage.usc.edu/brainstorm/Tutorials/Statistics
