Hey,
I usually point to that paper by Mumford, Poline and Poldrack if you
have orthogonality related questions:
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0126255
Hope it helps
@+
Remi
On 03/01/2018 11:13, Volkmar Glauche wrote:
> Hi Aser,
>
> as Donald already said, the orthogonalized regressors do not share variance. However, there is no reason why only one of them should show an effect in a particular voxel. It all depends on the nature of the dependency between measured signal and modelled design.
>
> Best regards
>
> Volkmar
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