Table 6.

Statistical results of the ANOVAs performed on the evoked potential at the image onset, estimated by regression.

Estimation GLM	Evoked potential at the image onset
	Virtual electrode (VE)	Emotion (EMO)	VE × EMO
P1 [ 90–130] ms	F(6,108) = 13.28; p < 0.001; ${\mathrm{\eta }}_{\mathrm{p}}^{\mathrm{2}}$ = 0.42; ∗∗∗	F(3,54) = 1.17; p = 0.33; ${\mathrm{\eta }}_{\mathrm{p}}^{\mathrm{2}}$ = 0.06	F(18,324) = 0.85; p = 0.63; ${\mathrm{\eta }}_{\mathrm{p}}^{\mathrm{2}}$ = 0.04
	Fr. > C.P. > P.O., Oc.
N170 [140–180] ms	F(6,108) = 1.98; p = 0.07; ${\mathrm{\eta }}_{\mathrm{p}}^{\mathrm{2}}$ = 0.10	F(3,54) = 0.64; p = 0.59; ${\mathrm{\eta }}_{\mathrm{p}}^{\mathrm{2}}$ = 0.03	F(18,324) = 1.07; p = 0.39; ${\mathrm{\eta }}_{\mathrm{p}}^{\mathrm{2}}$ = 0.06
P2–P3 [200–350] ms	F(6,108) = 27.30; p < 0.001; ${\mathrm{\eta }}_{\mathrm{p}}^{\mathrm{2}}$ = 0.60; ∗∗∗	F(3,54) = 1.19; p = 0.32; ${\mathrm{\eta }}_{\mathrm{p}}^{\mathrm{2}}$ = 0.06	F(18,324) = 0.99; p = 0.47; ${\mathrm{\eta }}_{\mathrm{p}}^{\mathrm{2}}$ = 0.05
	Fr. > C.P. > P.O., Oc.
LPP [400–600] ms	F(6,108) = 8.83; p < 0.001; ${\mathrm{\eta }}_{\mathrm{p}}^{\mathrm{2}}$ = 0.33; ∗∗∗	F(3,54) = 1.06; p = 0.37; ${\mathrm{\eta }}_{\mathrm{p}}^{\mathrm{2}}$ = 0.06	F(18,324) = 1.09; p = 0.057; ${\mathrm{\eta }}_{\mathrm{p}}^{\mathrm{2}}$ = 0.06
	Fr. > C.P. > P.O., Oc.		Right Fr. : D < S (trend)

^∗∗∗p < 0.001; bold, significant effect; Fr. for left and right frontal sites; C.P. for left and right centro-parietal sites; P.O., Oc. for left and right parieto-occipital sites and median occipital site; Left Fr. for left frontal site; H for Happiness, S for Surprise.