Whitening is done by default (you can turn it off with -nowhiten to
mkanalysis-sess). It uses an AR1 model.

On 3/4/19 12:46 PM, Zhi Li wrote:
>
>         External Email - Use Caution
>
> Hello Freesurfer Experts,
>
> May I ask if there is a whitening/weighting matrix used to give
> weighted least squares estimates (WLS) and whiten the data during the
> 1st-level model estimation in FSFAST? If so, how could I get it?
>
> Many thanks and kind regards,
>
> Lizhi
>
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