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help > RE: Effect of condition included in list of ROIs?
May 27, 2015 06:05 PM | Alfonso Nieto-Castanon - Boston University
RE: Effect of condition included in list of ROIs?
Yes, exactly. Selecting the "effect of
X" source will compute the association between that covariate and
the BOLD signal within each target voxel/ROI, which is equivalent
to a classical GLM where the design matrix includes the "effect of
X" covariate (so you are testing the "activation" of your target
voxel/ROI in response to your condition)
Hope this helps
Alfonso
Originally posted by Nicola Toschi:
Hope this helps
Alfonso
Originally posted by Nicola Toschi:
Hi Alfonso,
thank you very much for your helpful reply. I will follow your suggestion and include the conditions as Confounds.
Just to make sure I understand: if I do _not_ do this, the "effect of X" item which is included in the list of 'sources' would correspond to a ROI defined by the "activation" of the BOLD signal in response to the effect of X, as determined by a classical GLM?
Thanks again
Nicola
thank you very much for your helpful reply. I will follow your suggestion and include the conditions as Confounds.
Just to make sure I understand: if I do _not_ do this, the "effect of X" item which is included in the list of 'sources' would correspond to a ROI defined by the "activation" of the BOLD signal in response to the effect of X, as determined by a classical GLM?
Thanks again
Nicola
Threaded View
| Title | Author | Date |
|---|---|---|
| Nicola Toschi | May 27, 2015 | |
| Alfonso Nieto-Castanon | May 27, 2015 | |
| Nicola Toschi | May 27, 2015 | |
| Alfonso Nieto-Castanon | May 27, 2015 | |
| Nicola Toschi | May 28, 2015 | |