Relationships between Personality Traits and Brain Gray Matter Are Different in Risky and Non-risky Drivers

Table 2

Between-group comparisons in brain gray matter volume, adjusted for age, sex, and cultural level (left) and also by total intracranial volume (right).

Label	Controlled by age, sex, education						And TIV
	Size	-peak				pFDR	Size	pFDR
NR > MR
Parietal_Sup_L	1138	4.48	-33	-41	63	0.001	793	0.001
MR > HR
ParaHippocampal_R	2355	4.72	47	5	-47	0.001	1250	0.001
Cerebellum_6_R	926	4.09	26	-48	-27	0.001	318	0.03
Caudate_L	660	4.01	-14	27	0	0.001	245	0.05
Putamen_R	430	3.9	35	2	0	0.01
SupraMarginal_R	337	3.64	59	-30	35	0.023
NR > HR
Cerebellum_6_R	2014	4.17	35	-71	-30	0.001
Cerebellum_9_L	412	3.72	15	-57	-56	0.005
Cerebellum_Crus2_l	819	4.15	-45	-62	-26	0.001
Vermis_1_2	1808	4.63	-15	-44	-23	0.001	527	0.004
Frontal_Inf_Orb_L	388	4.03	-53	42	-5	0.006
Frontal_Inf_Tri_R	502	4.35	41	17	17	0.002
Frontal_Med_Orb_L	364	3.49	15	5	-17	0.007
Frontal_Mid_L	1741	4.53	-50	8	39	0.001
Frontal_Mid_R	3940	4.97	27	29	41	0.001	335	0.014
Frontal_Sup_Medial_L	495	4.13	-5	56	32	0.002
Fusiform_R	512	3.82	45	0	-51	0.002
Heschl_R	368	4.17	63	-11	9	0.007
Insula_R	1170	4.74	36	-5	-2	0.001
Lingual_L	1087	4.71	-24	-90	-6	0.001
Parietal_Sup_L	3092	4.69	-35	-39	53	0.001	435	0.006
Temporal_Sup_R	1087	4.64	59	-27	30	0.001
Temporal_Sup_L	461	3.95	-41	14	-14	0.003
Temporal_Pole_Mid_R	2375	4.13	45	21	-5	0.001

Note:NR: non-risk; MR: medium-risk; HR: high-risk.