Hi I have a question concerning the computation time for parameter estimation.
I have now set up my first DCM model, 4 regions of interest, 5 connections.
The design has 4 regressors, every regressor is affection every connection.
The parameter estimation runs now for nearly 24 hours.
System Pentium IV 2.5 Ghz, 2 GB Working mem. The maxmem parameter in
SPM_defaults ist set, so that SPM2 con use up to 1 GB of system rescources, but
this was only needed in the first hour of parameter estimation.
The time series consists of roughly 1150 scans, voxel size 3mm, ROI speroids with
6mm radius.
Is this computational time needed normal, or is there something going wrong, unfortunately
the matlab protocol widow is empty. (NoJava option)
Thank you!
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Ferenc Acs
Lehrstuhl Prof. Dr. M. W. Greenlee
Institut für Psychologie
Universität Regensburg
93040 Regensburg
Tel. +49 (0)941 943 3582
Fax +49 (0)941 943 3233
http://www.psychologie.uni-regensburg.de/Greenlee/team/Acs/acs.html
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