[Figure 2 here]
Figure 2 . N170 ERPs at electrode PO8 (shaded area) for Happy, Angry and Neutral faces. ERPs are shown for PLC (blue), MA (red) and MDMA (green) faces. MDMA significantly increased N170 peak amplitude in response to Happy and Angry faces, but not Neutral faces when compared with PLC.
P300 – Emotion processing. (Figure 3). MDMA did not affect the P300 peak amplitude compared to PLC (no significant interaction between Drug and Emotion (F(2,86)= 1.36,p>.05 , ηp2=0.05) or main effect of Drug, (F(2,86)= 3.37, p=.07 , ηp2=0.07)). Similarly MA did not affect P300 (no significant interaction with Emotion (F(2,88)= 2.20,p>.05 , ηp2=0.05) or main effect of Drug (F(2,86)= 0.14, p>.05 , ηp2=0.003)). Emotion was not significantly related to P300 peak for either MDMA or MA vs PLC (MDMA: F(2,86)= 2.02, p>.05 , ηp2=0.05; MA: F(2,86)= 0.72,p>.05 , ηp2=0.02) (Figure 3).