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...ationship, we used dynamic causal modelling (DCM; Friston et al., 2003) to explain visually induced responses to stimuli of different contrast levels. DCM has recently been extended to neural fields (=-=Pinotsis et al., 2012-=-). The advantage of neural fields (over neural masses or point sources) is that they can accommodate the spatial or topographic properties of cortical sources. Neural fieldmodels includehorizontal int...

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...d extensively to fMRI and electrophysiological data (David et al., 2006; Friston et al., 2003; Penny et al., 2004) and has been used recently to model spatiotemporal dynamics on the cortical surface (=-=Pinotsis et al., 2012-=-). Combining generative models with Bayesian optimisation techniques enables one to characterise the functional architectures that generate empirical data. In this paper, we show that DCM can disambig...

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...ationship, wesused dynamic causal modelling (DCM; Friston et al., 2003) to explain visually induced responsessto stimuli of different contrast levels.sDCM has recently been extended to neural fields (=-=Pinotsis et al., 2012-=-). The advantage of neuralsfields (over neural masses or point sources) is that they can accommodate the spatial orstopographic properties of cortical sources. Neural field models include horizontal i...

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...4 D.A. Pinotsis et al. / NeuroImage 92 (2014) 143–155This paper introduces the following three technical and conceptual advances, in relation to our previously published work on DCM for neuralfields (=-=Pinotsis et al., 2012-=-): (i) A newobservationmodel suitable for ECoG recordings. (ii) An extension of the classical Jansen and Rit model (introduced in our earlierwork) to afield version of the canonical microcircuit model...