Reply-To: | | [log in to unmask][log in to unmask]] > On Behalf Of Eric Holst > Sent: 03 December 2014 00:25 > To: [log in to unmask] > Subject: Re: [SPM] DCM: Problem with percentage of explained variance > > Dear Peter, dear SPM-experts, > > This may serve as an example to demonstrate how I have defined and extracted my VOIs. > > First, I have created masks for my ROIs with the SPM Anatomy Toolbox (version 18) in MNI-space. > In my example, this is for posterior parietal cortex of the left hemisphere (PPC_L), consisting of Brodman area 5+7. > > As mentioned before, I have calculated one SPM per subject containing sessions 1-6, so for each subject... > - SPM => Results > - t-contrast for "attention" > - masking (inclusive) => image: ROI_PPC_L (as created with SPM Anatomy > Toolbox) > - p value adjustment: none > - threshold: p = 0.05 > - extende¥QÝfr |