Compare the differences between different periods of time window

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1

Hello,

I'm wondering if I can compare different periods of time window.

For the task of each epoch (-4s ~ 4s) of each subject, "-4s ~ -2s" is blank; "-2s ~ 0s" is word; and "0s ~ 4s" is figure.
I want to compare the statistical differences between the source activation of "figure period" and "word period".
Can I use "parametric t-test against baseline" and set "-2s ~ 0s" as baseline (pouring all the averaged epochs for all subjects in "Process 1" to run the analysis) ?

2

If your research questions is about differences between the activity in the figure period and the **average ** activity in the word period you could use that approach. Please note that the activity in the "baseline" is averaged.

Check this tutorial on creating Subject averages and performing Group-level analyses with them:
https://neuroimage.usc.edu/brainstorm/Tutorials/VisualGroup#Group_analysis:_MEG.2FEEG