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Hi, here's an example call from FEAT: /usr/local/fsl/bin/film_gls -rn stats -sa -ms 5 filtered_func_data design.mat 1000.0 So I think you're on the right track but you need the "-ms 5" to set the smoothing size as well. Cheers. On 10 Mar 2009, at 15:03, Ning Liu wrote: > Hi all, > > I want to use the method in Woolrich 2001 to pre-whiten data for the > subsequent statistical analysis (without design.mat). I have checked > out the > potential commands: > > film_gls -rn stats -ac -sa -output_pwdata filtered_func_data.nii.gz > > Is it the one which Woolrich mentioned in his paper that uses Tukey > tapering > (default option) combined with spatial smoothing (-sa) to estimate the > autocorrelation? > > > Thanks, > > Ning > --------------------------------------------------------------------------- Stephen M. Smith, Professor of Biomedical Engineering Associate Director, Oxford University FMRIB Centre FMRIB, JR Hospital, Headington, Oxford OX3 9DU, UK +44 (0) 1865 222726 (fax 222717) [log in to unmask] http://www.fmrib.ox.ac.uk/~steve ---------------------------------------------------------------------------