Hi,
The 4D image should be normal fMRI data - that is, real-valued, not complex.
Almost no tools in FSL can work with complex data.
All the best,
Mark
> On 26 Jan 2017, at 21:05, Xueqing Liu <[log in to unmask]> wrote:
>
> Does the FMRI timeseries data (a 4D image in NIFTI format) I give PNM need to be complex? Or real data is fine?
> Can it even work with complex data?
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