The data set ‘swrfM_wht.nii.gz’ defines the CSF mask used in fMRI analysis for the SPM auditory data set ‘swrfM_filtered_func_data.nii.gz’. The package's data directory includes mask files associated with the partition of the SPM auditory data set (prefixed by fbase="swrfM"), in 3 classes: cerebrospinal fluid (CSF), grey matter (GRY) and white matter (WHT). The segmented masks were obtained by applying FSL/FAST to the structural high-resolution fMRI image, followed by FSL/FLIRT for low-resolution registration (see cudaBayesreg::read.Zsegslice).
The file ‘swrfM_wht.nii.gz’ is in gzipped NIFTI format.
SPM8 Manual, John Ashburner et. al., Functional Imaging Laboratory, Institute of Neurology, UCL, London, (http://www.fil.ion.ucl.ac.uk/spm/)
FSL & FreeSurfer Course, Oxford Centre for Functional Magnetic Resonance Imaging of the Brain (FMRIB), University of Oxford. (www.fmrib.ox.ac.uk/fsl).
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