Table 8.

Effect of emotions on neural dissimilarity

Analysis	ROIs	E12	N12	t	p	d
All RDM (72 × 72)	ITC L	0.66 ± 0.18	0.75 ± 0.17	−7.90	<0.001^**	−0.51
	ITC R	0.58 ± 0.19	0.69 ± 0.19	−10.88	<0.001^**	−0.58
	FFA R	0.56 ± 0.17	0.64 ± 0.17	−8.89	<0.001^**	−0.47
	Prec R	0.80 ± 0.10	0.83 ± 0.09	−3.60	0.001^*	−0.32
Emotional RDM (36 × 36)	EVC L	0.57 ± 0.19	0.64 ± 0.17	−6.20	<0.001^**	−0.39
	EVC R	0.49 ± 0.16	0.53 ± 0.14	−1.65	0.110	−0.27
	OPA L	0.49 ± 0.18	0.55 ± 0.17	−4.69	<0.001^**	−0.34
	OPA R	0.42 ± 0.17	0.48 ± 0.17	−5.36	<0.001^**	−0.35
	PPA L	0.83 ± 0.09	0.85 ± 0.04	−1.93	0.064	−0.31
	PPA R	0.64 ± 0.14	0.64 ± 0.14	−0.64	0.523	0.00
	FFA L	0.64 ± 0.17	0.74 ± 0.15	−11.34	<0.001^**	−0.63
	FFA R	0.55 ± 0.17	0.63 ± 0.16	−8.88	<0.001^**	−0.48
	Prec	0.77 ± 0.15	0.80 ± 0.14	−3.56	0.001^*	−0.21
	dACC L	0.68 ± 0.15	0.71 ± 0.14	−3.19	0.003^*	−0.21
	dACC R	0.73 ± 0.16	0.76 ± 0.14	−2.40	0.023^*	−0.20
	aINS L	0.79 ± 0.11	0.82 ± 0.10	−2.85	0.008^*	−0.29
Neutral RDM (36 × 36)	OPA L	0.47 ± 0.17	0.54 ± 0.16	−7.25	<0.001^**	−0.42
	OPA R	0.40 ± 0.15	0.46 ± 0.16	−5.86	<0.001^**	−0.39
	PPA L	0.55 ± 0.13	0.58 ± 0.14	−2.79	0.009^*	−0.22
	PPA R	0.47 ± 0.13	0.47 ± 0.14	−0.73	0.473	0.00
	FFA L	0.64 ± 0.17	0.77 ± 0.15	−11.34	<0.001^**	−0.81

Difference in neural dissimilarity (measured as correlational distance) among conditions. The dissimilarity between emotional categories (E12) was calculated by averaging the dissimilarity between E1 and E2, and the dissimilarity between neutral categories (N12) by averaging the dissimilarity between N1 and N2 for each participant. These measures were first computed in brain clusters significantly involved in the representation of the whole (72 stimuli) participants' similarity space (top of the table). Then, we computed E12 and N12 in brain clusters significantly involved in the representation of the emotional (middle of the table) and neutral (bottom of the table) participants' similarity space. We entered them as dependent variables in paired t tests, one for each brain cluster. Bonferroni post hoc corrections for multiple comparisons (p < 0.05) are summarized at the bottom;
↵*p_FWE < 0.05,
↵**p_FWE < 0.001. AI, Anterior insula; R, Right; L, left.