Dear Vahab,

On Mon, Jul 28, 2014 at 5:21 PM, Vahab Youssofzadeh <[log in to unmask]> wrote:

In coupling (B) of DCM, if I have 0.43 for posterior mean and 0.99 for posterior probability between X and Y sources, does it mean that coupling change between source X to source Y area is decreased by 99% ?

No, it means that the connection strength is 43% of that specified by the A matrix and this effect is non-zero (i.e. posterior mean is different from 1) with probability of 0.99.

How about 4.9 (1.00)? does it mean that there is a 100% increase in effective connectivity between two areas?

No, it means that the connection strength is 490% of that in the A matrix and the effect is non-zero with probability of 1.

Best,

Vladimir