Figure 3: Amplitude maps of the grand average of Late Positive Potential recorded during affective picture viewing in 16 patients (a) and 16 controls (b). At the bottom, the statistical probability maps report the results of the application of Student’s t test, corrected for multiple comparisons, between patients and control group. The red color signs the significance threshold at 0.05 p level; the yellow color p levels below 0.01, the blue color represent no significant result. HD patients show a significantly reduced LPP during unpleasant pictures viewing on the centro-temporal-parietal derivations.