Carlos R. Cortes wrote:
> Hello DCM experts,
>
> Couple of questions about DCM:
>
> 1. How valid is to use the activity of a specific region as a context input?
Its not valid.
> 2. How can I set up this?
You can't set it up.
>
> Thanks in advance,
> Carlos
>
Sorry !!
The problem is, as soon as you allow this, the change
in neuronal activity (dz/dt) becomes a nonlinear (quadratic) function of
neuronal activity (z). The integration and estimation steps inside
DCM can't handle this.
Will.
--
William D. Penny
Wellcome Department of Imaging Neuroscience
University College London
12 Queen Square
London WC1N 3BG
Tel: 020 7833 7475
FAX: 020 7813 1420
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URL: http://www.fil.ion.ucl.ac.uk/~wpenny/
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