 |
 |
Dear DCMers, I played a little bit around with DCM10, and found considerable difference compared to earlier versions of DCM when estimating an identical 6 regions motor network model. For example, connections which were strongly negative in the "old DCM" version (DCM.Ep) were strongly positive in DCM10 (1-state, bilinear, no stochastic). If I run more complex models in DCM10, it takes 6 (!) times longer than in earlier SPM8 versions...Coupling estimates in DCM10 are sometimes unusually big (close to 1.0). Is there any way to compare "old DCMs" with "new DCMs" to get a feeling of what has changed (and more importantly: what is correct)? Best regards, Christian -------------------------------------------------- Dr. med. Christian Grefkes Zentrum für Neurologie und Psychiatrie Universität zu Köln Kerpener Straße 62, 50924 Köln phone: +49-221-4726-310 fax: +49-221-478-7005 http://neurologie-psychiatrie.uk-koeln.de/ Max Planck Institute for Neurological Research Research Group Leader Neuromodulation & Neurorehabilitation Gleueler Str. 50, 50931 Köln phone: +49-221-4726-310 fax: +49-221-4726-298 http://www.nf.mpg.de/index.php?id=255