Table 3.

Inferential statistics for the repeated-measures ANOVA on accuracy as a function of type of stimuli (FLD vs. PLD vs. static), emotion (anger vs. fear vs. happiness vs. sadness), item difficulty (easy vs. difficult) and stimulation condition (active vs. sham tVNS)

rmANOVA effect	F	p	ηp2	MSE
Stimulus type	13.26	<0.01	0.18	0.53
Emotion	22.42	<0.01	0.27	2.43
Difficulty	44.13	<0.01	0.43	1.00
tVNS session	0.11	0.74	<0.01	<0.01
Stimulus type × Emotion	53.41	<0.01	0.47	5.47
Anger: FLD vs. PLD vs. Static	43.48	<0.01	0.42	0.23
Fear: FLD vs. PLD vs. Static	9.04	<0.01	0.13	0.03
Happiness: FLD vs. PLD vs. Static	53.69	<0.01	0.48	2.26
Sadness: FLD vs. PLD vs. Static	12.29	<0.01	0.17	0.05
Stimulus type × Difficulty	24.88	<0.01	0.30	0.54
Easy: FLD vs. PLD vs. Static	19.52	<0.01	0.25	0.04
Difficult: FLD vs. PLD vs. Static	17.24	<0.01	0.22	0.10
Emotion × Difficulty	7.32	<0.01	0.11	0.21
Stimulus type × tVNS session	0.29	0.74	<0.01	<0.01
Emotion × tVNS session*	4.54	<0.01	0.07	0.10
Difficulty × tVNS session	0.38	0.54	<0.01	<0.01
Stimulus type × Emotion × Difficulty	9.60	<0.01	0.14	0.31
FLD: Emotion × Difficulty	10.27	<0.01	0.15	0.10
PLD: Emotion × Difficulty	1.07	0.36	0.02	0.02
Static: Emotion × Difficulty	16.60	<0.01	0.22	0.42
Stimulus type × Emotion × tVNS session	1.11	0.35	0.02	0.03
Stimulus type × Difficulty × tVNS session	0.25	0.78	<0.01	<0.01
Emotion × Difficulty × tVNS session	1.36	0.26	0.02	0.02
Stimulus type × Emotion × Difficulty × tVNS session	0.47	0.77	<0.01	<0.01

Significant effects are highlighted in bold font and asterisk highlights the main interaction effect between emotion and tVNS stimulation.