HI Olga
The rationale is to compensate for imperfect motion correction during
realignment. This rationale is described in a MRM paper by Friston
et. al from 1996.
Best
Torben
8/2007, at 1.46, Olga Prilipko wrote:
> Dear all,
>
> I am relatively new to SPM and would greatly appreciate your input
> on the following: what are the pros and cons for the inclusion of
> the 6 motion regressors in the design matrix as nuisance
> regressors? Is this step more useful in event-related designs than
> block designs? It seems that a lot of tutorials omit this step, but
> some recommend it - what is the rationale?
> Thank you very much.
>
> Olga
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