Dear SPMers:
I want to use small volume correction (SVC) for the brain activation level. I have encountered an issue, after using the SVC, the puncorrected value at the cluter-level is higher than before (e.g. p=0.06 after using the SVC , whereas before is 0.02. ) , but the p corrected-level is significant after SVC at cluster-level. I do not know the reason, is it supposed to be like that some times?
What should I be looking at after SVC, cluster-level p uncorrected or p corrected or voxel-level p fwe-corrected or p fdr-corrected, and at what p level ( p = 0.05)?
I entered 10 mm for the radius value
Can anyone let me know?
Thank you in advance.
Bing