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help > RE: Which structurals to use for repeated measure
Nov 13, 2014 05:11 AM | Alfonso Nieto-Castanon - Boston University
RE: Which structurals to use for repeated measure
Hi Kaitlin,
Typically I would simply enter the first structural volume if I do not have any reason to expect between-session differences in the structural data. If you believe, on the other hand, that there may be structural differences between your sessions then it might be preferable to use session-specific structural volumes (and for that the simplest approach is probably to enter the different sessions as if they were different subjects, into the toolbox e.g. if you have 10 subjects then enter 70 as the number of subjects in Setup.Basic, and then when you get to the second-level analyses enter additional "within-subjects" second-level covariates to perform the desired repeated measure analyses; see for example this post for an example on how to do this http://www.nitrc.org/forum/message.php?m...)
Best
Alfonso
Originally posted by Kaitlin Cassady:
Typically I would simply enter the first structural volume if I do not have any reason to expect between-session differences in the structural data. If you believe, on the other hand, that there may be structural differences between your sessions then it might be preferable to use session-specific structural volumes (and for that the simplest approach is probably to enter the different sessions as if they were different subjects, into the toolbox e.g. if you have 10 subjects then enter 70 as the number of subjects in Setup.Basic, and then when you get to the second-level analyses enter additional "within-subjects" second-level covariates to perform the desired repeated measure analyses; see for example this post for an example on how to do this http://www.nitrc.org/forum/message.php?m...)
Best
Alfonso
Originally posted by Kaitlin Cassady:
Hi there!
I am running a repeated measures (with 7 time points) resting-state functional connectivity analysis, and I am wondering which structural scan to use for each subject? Would it be better to take the average structural of the 7 sessions, or just use each subjects' first time point structural?
Any help would be greatly appreciated.
Thanks!
I am running a repeated measures (with 7 time points) resting-state functional connectivity analysis, and I am wondering which structural scan to use for each subject? Would it be better to take the average structural of the 7 sessions, or just use each subjects' first time point structural?
Any help would be greatly appreciated.
Thanks!
Threaded View
| Title | Author | Date |
|---|---|---|
| Kaitlin Cassady | Nov 12, 2014 | |
| Kaitlin Cassady | Dec 13, 2014 | |
| Alfonso Nieto-Castanon | Dec 16, 2014 | |
| Kaitlin Cassady | Nov 14, 2014 | |
| Alfonso Nieto-Castanon | Nov 15, 2014 | |
| Kaitlin Cassady | Nov 14, 2014 | |
| Alfonso Nieto-Castanon | Nov 13, 2014 | |