The Human Brain Maintains Contradictory and Redundant Auditory Sensory Predictions
Figure 5
Illustration of the additive model.
Panel A: The difference waveform (black line) of measured IRMMN (VA-STA) and the sum of the mean amplitudes of IR (V-STA) and MMN (A-STA) shows values around zero µV until the end of the time window of prediction error signals. Negative is plotted upwards. Together with the similar voltage distributions of measured and modelled component (panel B), this supports the assumption of functional independence of IR and MMN. Panel C: Bar graphs for potential and PCD data, showing amplitudes (left: mean amplitude of ROIs lateral) and PCDs (right) for modelled (IR+MMN) and measured (IRMMN) concurrent violation of sound prediction. For VARETA source analysis, mean PCD values of the centers of gravity were averaged for both hemispheres in the time window of 105–130 ms. Error bars represent the standard error of mean.