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help > RE: including a parametric modulator
Jul 20, 2012 06:07 PM | Alfonso Nieto-Castanon - Boston University
RE: including a parametric modulator
Dear Rich
Unfortunately the toolbox does not allow you to explore task-related connectivity when the task is characterized by a continuous variable (parametric modulators). I would suggest to discretize if possible your modulator variable (convert it to a fixed set of levels) and then enter those as different conditions (conn will allow you then to explore task-related connectivity across these different 'conditions' / levels of your parametric modulator). Alternatively perhaps you might also want to consider using SPM's PPI analyses to explore this form of continuous task interactions.
Best
Alfonso
Originally posted by Richard Morris:
Unfortunately the toolbox does not allow you to explore task-related connectivity when the task is characterized by a continuous variable (parametric modulators). I would suggest to discretize if possible your modulator variable (convert it to a fixed set of levels) and then enter those as different conditions (conn will allow you then to explore task-related connectivity across these different 'conditions' / levels of your parametric modulator). Alternatively perhaps you might also want to consider using SPM's PPI analyses to explore this form of continuous task interactions.
Best
Alfonso
Originally posted by Richard Morris:
Dear Conn toolbox experts,
I'm interested in task-related connectivity, and would like to test the connectivity associated with a parametric modulator in my design matrix. However, when I set up my analysis in the Conn toolbox, I see my conditions (onset regressors) but not the parametric modulator associated with each condition. Is it possible to include the parametric modulator as a condition? Does it even make sense within the context of the Conn analysis?
Ta,
Rich
I'm interested in task-related connectivity, and would like to test the connectivity associated with a parametric modulator in my design matrix. However, when I set up my analysis in the Conn toolbox, I see my conditions (onset regressors) but not the parametric modulator associated with each condition. Is it possible to include the parametric modulator as a condition? Does it even make sense within the context of the Conn analysis?
Ta,
Rich
Threaded View
| Title | Author | Date |
|---|---|---|
| Richard Morris | Jul 20, 2012 | |
| Alfonso Nieto-Castanon | Jul 20, 2012 | |
| Ewa Miendlarzewska | Oct 12, 2015 | |
| Alfonso Nieto-Castanon | Oct 14, 2015 | |
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