Drug Effects on ERP peaks.
N170 – Face processing. (Figure 2). MDMA significantly
increased N170 peak amplitude compared to PLC specifically for Happy
(MDMA/PLC; M=-2.27µV/M=-1.04 µV) and Angry (MDMA/PLC; M=-2.09µV
/M=-1.31µV) faces (significant Drug x Emotion interaction, F(2,86)=
4.49, p=.01 , ηp2=0.1).
Regardless of whether participants received MDMA or PLC, the N170
amplitude was also greater with Happy and Angry faces compared to
Neutral faces (main effect of Emotion F(2,88)= 7.86, p=.001 ,
ηp2=0.15). MA did not affect the N170
peak amplitude, compared to PLC (no significant interaction between Drug
and Emotion, F(2,86)= 0.31, p>.05 ,
ηp2=0.007). In this MA vs PLC
analysis, Emotion did not affect peak N170 amplitude here (no main
effect of Emotion, F(2,86)= 1.21, p>.05 ,
ηp2=0.03).