Figure 4: Unattended oddball grand average ERP difference waveforms at traditional evaluation channel FCz computed as the difference between the 20% trimmed mean of the mean subject-level single-trial ERP to standard and deviant stimuli, respectively. Shaded areas denote the 95% Bayesian Highest Density Interval (HDI). Typical ERP components are marked. Note that the d in dP3a denotes a difference wave ERP component. As such, each type of MMN is followed by a corresponding dP3a.