Just create a text file (not bfloat) where each row is a different time
point. You can have multiple columns and can specify how many of them to
use in the analysis.
On 5/18/2021 5:03 PM, Eli Bulger wrote:
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Hello,
I am working with task-based functional data pre-processed with
fMRIPrep that I am trying to run through the FSFAST pipeline. I would
like to use some of the nuisance regressors / confounds outputted by
fMRIPrep as external regressors.
The documentation for "mkanalysis-sess" (shown below) lists this as an
option, but I am not sure how to go about creating the .bfloat file(s).
Is there any documentation / example / tool that can provide some
guidance on how to do this? Any advice is much appreciated!
"mk-analysis-sess" documentation referred to:
-extreg [extregstem]
external regressor
Use external regressors when doing estimation. The external regressors
should be stored in the bfloat "volume" with stem extregstem. There
should actually be only one file there (extregstem_000.bfloat). It
should have one row, and the number of columns should be equal to the
number of external regressors. The number of frames must be equal to
the number time points. There should be an external regressor file in
each run directory. By default, all the regressors will be used, but
this can be changed with -nextreg. See also -mcextreg.
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