  We present a software tool -- extended Dynamic Causal Modelling for Phase
Coupling (eDCM PC) -- that is able to estimate effective connectivity between
any kind of oscillating systems, e.g. distant brain regions, using the phase
information obtained from experimental signals. With the help of a
transformation function eDCM PC can measure observable independent coupling
functions within and between different frequency bands. eDCM PC is written in
the numerical computing language MATLAB as an extension to Dynamic Causal
Modelling (DCM) for phase coupling (Penny et al. 2009). eDCM PC is available on
GitLab under the GNU General Public License (Version 3 or later).
