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closequestion about the spatial resolution and inter-scan interval
Posted by kstqli on 21 Nov 2014 at 15:05 GMT
It is a very interesting paper about reliability and stability on resting-state fMRI. However, I am bit confused about the data processing procedure, particularly the change of spatial resolution. Accordingly, the raw data was acquired at 4-5 mm resolution, then the data were smoothed to FWHM=6mm. Finally the data were resampled into 3mm resolution. I can understand the smoothing to 6mm. But what is the point to resample to 3mm?
Another minor question is the inter-scan interval. Is there any specifics about it?
RE: question about the spatial resolution and inter-scan interval
JSong1 replied to kstqli on 21 Nov 2014 at 18:57 GMT
The re-sampling is one step described in Materials and Methods--fMRI Data Preprocessing. The purpose of this step is essentially to transform each subject's functional data to a common space--the MNI152 brain template which has voxel size of 3×3×3 mm^3
Unfortunately no specifics were found regarding the inter-scan interval.