Dear DCM experts, In a DCM fMRI experiment, we need to exclude one of the experimental "conditions" from the DCM analysis (some subjects did not perform the task properly). What would be the right way to do this? I would greatly appreciate any advice. Thanks in advance, Vladimir Cherkassky Center for Cognitive Brain Imaging Psychology Department Carnegie Mellon University Pittsburgh, PA 15213 email: [log in to unmask] fax: (412) 268-2804 tel: (412) 268-3379