Hi all.
I have a few group analysis questions:
1. After running QDEC I find several significant regions that have a p-value associated with them. (This is obtained by clicking on the most significant vertex) However, if I change the threshold from the default to 1.3, 2, 3, to show all vertices with p<.05 then the p-value associated with the significant regions stays this same as it was during the default display. The threshold bar appears to only have affect on the visualization not on finding significant regions. So, is there a default p-value that is in qdec to find signicant regions?
2. How would one go about reporting these regions in a manuscript? Would they be called uncorrected at blank with a value of blank?
3. I thought that mri_glmfit, which is what QDEC does, is essentially an F-test. If so, where is the F value?
4. After running a full monte-carlo simulation I have many regions close to 0.99 and therefore are not significant. However, they were significant enough to be generated on the simulation table. How would one go about reporting these clusters in a manuscript?
5. Are the CWP values, from the simulations, p-values?
Any help or input from anyone would be greatly appreciated.
Thanks,
Judith