Dear SPM team,
I am running DCM analysis on a mismatch auditory task (auditory standard and auditory deviant stimulus).
The parameters of the DCM models are similar to the Garrido model in SPM manual.
For one subject, the sources time-series for right A1 has a peculiar behaviour. All others nodes of the models present smooth activity, but for this one (rA1) , there is also some saw-tooth activity added.
Here is an example:
https://drive.switch.ch/index.php/s/EJE94R1yrJKQeUG
Is there something that can be explained from the optimization scheme, or do you have an explanation?
The scalp time-series are smooth as well.
Many thanks for your help,
Best,
Adrien Witon
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