Text S1 - Modelling Trial-by-Trial Changes in the Mismatch Negativity

Mathematical details of our models and methods. Sections 1—4 provide additional information about the models based on the free-energy principle. Concretely, these sections specify how we modelled the brain's internal model of tone sequences, learning and perception, individual differences, and the manifestation of neurocomputational variables in scalp potentials. Section 5 explains how we approximated each model's log-evidence. Section 6 sketches how the computations postulated by the free-energy models could be implemented in the brain. (PDF)