Modelling Trial-by-Trial Changes in the Mismatch Negativity
Figure 4
Posterior probabilities of the 13 MMN models.
The 13 MMN models were compared by their posterior probability given the trial-wise MMN amplitudes of all eight subjects. These posterior probabilities were computed by random effects Bayesian model selection at the group level. The bars are coloured according to the theory instantiated by each model. The model explaining trial-wise MMN amplitudes by precision weighted prediction errors on the unobservable tone category () had the highest posterior probability (
). It is closely followed by three almost equally probable “model adjustment” models (
), and the model explaining trial-wise MMN amplitudes by prediction errors on the observed log-frequency (
).