dear SPM list,
what may be the optimal procedure to realign/normalize numerous sets
of fMRI data for the same subject acquired on the same scanner but at
different dates ? we like to prepare these data for a longitudinal
brain states analysis - not necessarily in a normalized brain space
like MNI152 but if possible in a subject-specific brain space.
in this respect it is not clear to me if bread+butter realignment
would do the job for us, or if a normalization to a subject-specific
beforehand created template brain is the way to go. we may prefer to
do the analysis on non-smoothed but realigned and perhaps normalized
data as outlined above. moreover, our spatio-temporal analysis
approach is likely fairly susceptible to spatially distributed
artefacts that either originate in the unavoidable varying field
inhomogeneities introduced with each new scan date and position - or
in those introduced with the spatial preprocessing procedures
addressed here. is there a general consensus in the community about
such ?
thanks much for feedback, bye, pisti
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