Hey there,

Anyone know what the "d" prefix designates in preprocessing? My functional data end up with "dswau" prefixes.  I know "swau", but not the "d".  I suspect when I'm running conn_batch(batch) it's using a different default preprocessing pipeline that has an extra step or two (likely , compared to what I am running in the GUI (I load defaultMNI_fastacquisitions.mat).

Can't find any references to it in the conn or SPM manual or help forum.  Thinking it might be d for direct-mni vs indirect warp of my functional data... but not sure. The functional files are more than double the originals (16 to 32 float?).

To help others (seems to be a common question) - conn prefixes:
Seminal thread: https://www.nitrc.org/forum/forum.php?th...

short version:
ct1 ---> centered T1
c1ct1 ---> segmented centered T1 (grey matter mask)
c2ct1 ---> segmented centered T1 (white matter mask)
c3ct1 ---> segmented centered T1 (CSF)
uxxx.nii ---> unwarped
auxxx.nii ---> slice timing corrected, unwarped
wauxxx.nii ---> normalized, slice timing corrected, unwarped
swauxxx.nii ---> smoothed, normalized, slice timing corrected, unwarped
rp_xxx ---> file which is the realignment output.
y_ and iy_ are the deformation fields (instead of the older sn_.mat files),
c1ct1 - c3ct1 would be the GM/WM/CSF masks, and wc1ct1 - wc3ct1 would be the normalized GM/WM/CSF masks 

Thanks,
Sherri