Variance normalization and detrending in CompCor

[juhuntenburg]

Hi, I just saw in the new CPAC release they updated the CompCor implementation to variance normalize the data, as in the original publication. FCP-INDI/C-PAC@5a83283

I am not sure, but from what I see there is no variance normalization (nor mean centering) in the BIPS implementation? Is that correct, and if so, is it an issue?

Also, is the detrending commented out because it is taken care of by the TSNR interface before?

[satra]

@juhuntenburg - for resting preprocessing please switch over to the example script in nipype itself. it's much more refined relative to the one in bips.

https://github.com/nipy/nipype/blob/master/examples/rsfmri_vol_surface_preprocessing_nipy.py#L261

[juhuntenburg]

@satra great, thanks a lot!