[color=#000000]Dear Heidi[/color]
[color=#000000]That is quite strange, could you please send me your conn_*.mat file to take a quick look to see if I can figure this out? In the meantime just a quick note on combining your two 6 minute runs into a single 12 minute session: if you are simply concatenating those and entering into CONN the resulting file as a single session, that can introduce some potential issues in your analyses (namely, operations like temporal filtering will incorrectly treat the end of your first 6-minute run and the beginning of your second 6-minute run as temporally-contiguous, ART will also incorrectly interpret those few scans and likely flag them as outliers, and last potential average BOLD signal differences between the two scans will not be corrected for, which may produce global confounding effects in your correlation analyses). Because of this I typicallyl recommend instead simply entering those as separate runs/sessions (e.g. in your analyses you would enter four runs/sessions per subject), and then simply define in 'Setup.Conditions' the proper associations between your four runs and your two conditions (e.g. baseline and 6-year follow-up)[/color]
[color=#000000]Hope this helps[/color]
[color=#000000]Alfonso[/color]
[i]Originally posted by Heidi Jacobs:[/i][quote]Dear Alfonso,
I have data of 46 individuals who have had two measurements (baseline and 6 year follow-up).
Each resting-state scan consists of two 6 minute runs (two at baseline and two at the follow-up), which I have combined into 2 12 minute long sessions.
I have entered in CONN 46 subjects with 2 sessions with session-specific structurals.
The resting-state scans are entered as condition 1 and condition 2
In the condition tab, both conditions have length 0 to Inf.
Then I did the preprocessing and the denoising.
However, when getting to the first-level analyses, I only see "condition", there is not specification anymore of condion1 or condition2. And in the second-level analyses I also don't see the two conditions.
What have I done wrong? Any suggestions?
Many thanks!
All the best
heidi[/quote]
[color=#000000]That is quite strange, could you please send me your conn_*.mat file to take a quick look to see if I can figure this out? In the meantime just a quick note on combining your two 6 minute runs into a single 12 minute session: if you are simply concatenating those and entering into CONN the resulting file as a single session, that can introduce some potential issues in your analyses (namely, operations like temporal filtering will incorrectly treat the end of your first 6-minute run and the beginning of your second 6-minute run as temporally-contiguous, ART will also incorrectly interpret those few scans and likely flag them as outliers, and last potential average BOLD signal differences between the two scans will not be corrected for, which may produce global confounding effects in your correlation analyses). Because of this I typicallyl recommend instead simply entering those as separate runs/sessions (e.g. in your analyses you would enter four runs/sessions per subject), and then simply define in 'Setup.Conditions' the proper associations between your four runs and your two conditions (e.g. baseline and 6-year follow-up)[/color]
[color=#000000]Hope this helps[/color]
[color=#000000]Alfonso[/color]
[i]Originally posted by Heidi Jacobs:[/i][quote]Dear Alfonso,
I have data of 46 individuals who have had two measurements (baseline and 6 year follow-up).
Each resting-state scan consists of two 6 minute runs (two at baseline and two at the follow-up), which I have combined into 2 12 minute long sessions.
I have entered in CONN 46 subjects with 2 sessions with session-specific structurals.
The resting-state scans are entered as condition 1 and condition 2
In the condition tab, both conditions have length 0 to Inf.
Then I did the preprocessing and the denoising.
However, when getting to the first-level analyses, I only see "condition", there is not specification anymore of condion1 or condition2. And in the second-level analyses I also don't see the two conditions.
What have I done wrong? Any suggestions?
Many thanks!
All the best
heidi[/quote]