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help > RE: Negative Connectivity
May 20, 2015 01:05 PM | Alfonso Nieto-Castanon - Boston University
RE: Negative Connectivity
Hi Kaitlin,
To run those post-hoc analyses in SPM I believe you can simply use step (2) from the description in my last post of the same post-hoc procedure in CONN, then select 'SPM display' to view these results in SPM, and then:
a) select the contrast [1 0] to view the 'time1' effects
b) select 'mask by another contrast' and choose the [-1 1] masking contrast (to limit the analyses only to those regions that showed significant time2-time1 differences in connectivity
and then repeat the same steps selecting an [0 1] initial contrast in order to look at the individual 'time2' effects.
Hope this helps
Alfonso
Originally posted by Kaitlin Cassady:
To run those post-hoc analyses in SPM I believe you can simply use step (2) from the description in my last post of the same post-hoc procedure in CONN, then select 'SPM display' to view these results in SPM, and then:
a) select the contrast [1 0] to view the 'time1' effects
b) select 'mask by another contrast' and choose the [-1 1] masking contrast (to limit the analyses only to those regions that showed significant time2-time1 differences in connectivity
and then repeat the same steps selecting an [0 1] initial contrast in order to look at the individual 'time2' effects.
Hope this helps
Alfonso
Originally posted by Kaitlin Cassady:
Hi Alfonso,
Thanks for the information! You mentioned initially that I am able to evaluate the "sign" of connectivity AFTER my statistical inferences (e.g., after I find which regions show significant differences in connectivity between sessions, and then evaluate whether the found differences relate to positive-connectivity or anticorrelations within each session). How do I do this, specifically using SPM (i.e., SPM's flexible factorial model).
Thank you!
Thanks for the information! You mentioned initially that I am able to evaluate the "sign" of connectivity AFTER my statistical inferences (e.g., after I find which regions show significant differences in connectivity between sessions, and then evaluate whether the found differences relate to positive-connectivity or anticorrelations within each session). How do I do this, specifically using SPM (i.e., SPM's flexible factorial model).
Thank you!
Threaded View
| Title | Author | Date |
|---|---|---|
| Kaitlin Cassady | Mar 24, 2015 | |
| Alfonso Nieto-Castanon | Apr 9, 2015 | |
| Kaitlin Cassady | Apr 15, 2015 | |
| Alfonso Nieto-Castanon | Apr 17, 2015 | |
| Kaitlin Cassady | Apr 23, 2015 | |
| Alfonso Nieto-Castanon | May 6, 2015 | |
| Kaitlin Cassady | May 8, 2015 | |
| Alfonso Nieto-Castanon | May 20, 2015 | |
| Kaitlin Cassady | May 6, 2015 | |
| Kaitlin Cassady | Apr 7, 2015 | |