Figure 6.

The IPS in the context of the classical GLM approach. A, Caudal top view of the IPS and somatosensory cortex activation as captured with the EEG-informed and the classical GLM analyses, respectively. Both thresholded at p < 0.001 uncorrected. B, Bar graphs display normalized contrast estimates for the left and right IPS in the classical GLM contrasts, AL versus AR and AR versus AL. Error bars show 90% confidence intervals. It seems as if the IPS is not primarily involved in sustained attention (as captured with classical GLM), but rather in the trial-by-trial variations thereof.