Hi,

I've been using FSL for my data analyses of phMRI data, and would like to go beyond the time filtering options that are offered in FSL. FSL will highpass your data with arbitrary frequency, and lowpass it using a hardcoded frequency (which you can change in the source, but that's cumbersome). What I'd really like is a utility that allows arbitrary time filtering of 4D NIFTI files. Something that would do highpass, lowpass, bandpass, and bandstop, with arbitrary specification of frequency limits (and filter kernel would be nice too). Ideally this would be a command line tool that would integrate nicely into my script-based FSL workflow. Anybody know of anything out there?

Thanks,
Blaise