dear spm experts,
i have a question about the spm_dcm_U function (SPM5).
in my experiment, i present targets and invalid stimuli. the invalid stimuli
are
of no interest for my research question. i wish not to analyze them.
i have specified two conditions for targets and one condition for the
invalid stimuli in my 1st level spm.
i used the spm_dcm_U command and set the "invalids" condition to 0
(spm_dcm_U(DCM_filename, 'SPM.mat', 1, {1, 1, 0}))
is the "invalids" condition now removed from the dcm-analysis? (does dcm now
partition out the "invalids" from the voi-timeseries, or something like that?)
or is the "invalids" condition now simply left unexplained - resulting in
worse explanatory power of such models?
thank you very much in advance!
all the best,
matthias
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Mag. Matthias Schurz
Institut für Psychologie &
Zentrum für Neurokognitive Forschung
Universität Salzburg
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Tel. 0662/8044/5162
Mobil. 0650/5781288
Hellbrunner Straße 34,
5020 Salzburg
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