Hello SPMers,
I ran parametric modulations on block design to investigate 2 regressors effects on my activations. But I was wondering several things about this analysis:
1) Does this approach allow us to reveal the effect of the regressor on the brain activity? or does it label this effect as a non-interest factor and suppress its effect on the brain activity?
2) If we have 2 parametric regressors in the same model, is it possible to investigate the effect of the first and the second regressors separatlety? even if they are integrated in the same 1st level analysis?
Thanks a lot
Best regards
Anne-Lise
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