Dear Kambiz,
It is not possible to do this kind of statistics with a single image
per condition. You should either enter all your single trials into the
design rather than averages or do your analysis across subjects.
Best,
Vladimir
On Wed, Nov 11, 2009 at 6:10 PM, Kambiz Tavabi <[log in to unmask]> wrote:
> Dear SPMers,
> I am trying to conduct a sensor space analysis of my MEG data using a 2x2x2
> factorial design. Attached are SPM8 outputs for design/cell specifications
> for single subject using the 'specify 2nd level' procedure dialog. I receive
> the following: 'Warning: Please check your data: There are no significant
> voxels' when attempting to estimate the model parameters, and cannot proceed
> with contrasts.
> I am essentially adapting what is in the SPM8 manual for conducting t-tests
> in MEG sensor space to the factorial approach. I wonder if the procedure is
> correct for single subject analysis? At what point does the data for all my
> subject enter into the analysis?
>
> Thanks
> Kambiz
>
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