Hi,
I am bit lost with the terms so I would appreciate some clarification.
The function ANCOVA under 'fully factorial design' in SPM5 is
explained to be used only for PET design, as I guess it is assumed
that the global signal varies between subjects.
My question is:
Would it also be true for EEG signal, as there are huge variations
between subjects in terms of the global signal and its sign? In other
words is it recommend to use it in EEG 2nd level deigns?
thanks in adavnce
Pia
|