Hi DCM experts,<br><br>I run my electrophysiological data using DCM for ERP. First I used a script included in SPM8 to convert the data into SPM format and then setup all the parameters required and the assumed connections. However, after estimating, I found all the posterior probability for the connections (A,B,C matrix shown) is 0.5. Initially I think maybe it is due to local minimum convergence. I tried to continuously use the estimated parameter to estimate again, but the results are the same (i.e., 50% still). Could anyone who experiences this give some solutions about this. Thanks.<br>
<br>Best,<br>Liang<br clear="all"><br>-- <br>Liang Wang, PhD<br>Neuroscience of Attention and Perception Laboratory<br>Princeton Neuroscience Institute<br>Princeton University<br>Princeton, NJ, 08540<br><br><br>