Hi,

I have simulated some source data consistent with the Desikan-Killainy parcellation scheme(68 scouts). I want to use this data to obtain the corresponding MEG signal consistent with a pre-estimated head model. While I understand that this entails a simple matrix multiplication(Forward model * source matrix), the actual forward model has 15002 vertices whereas I have 68 scouts. Is there some way to obtain a forward model that lets me compute MEG simulations directly from the 68 scouts ? The shape of such a forward model would have to be 68(scouts)*339(MEG sensors).

Thank you !