Frontal cortex tracks surprise separately for different sensory modalities but engages a common inhibitory control mechanism
Fig 8
Properties of the independent component selected to reflect the stop-signal P3 in the SST from the merged dataset analysis.
The left plot shows that the morphology of the stop-signal P3 based on all non-artifact components (i.e., the standard channel ERP) can be entirely reproduced using just one IC. This shows that the selection algorithm identified the appropriate component, accounting for the activity of the stop-signal P3. Furthermore, this IC shows the classic features demonstrated for the stop-signal P3 in the SST. Namely, the onset of the P3 was earlier on successful vs. failed stop trials (inlay on left plot), and was positively correlated with SSRT across subjects (right plot). Shaded area around the ERP curves denotes the standard error of the mean.