Table 2.

Comparison of cortical thickness between high and low impulsivity group

Cortical regions	High group (N=28)		Low group (N=72)		F(1, 94)	p-value
	Mean	SD	Mean	SD
Left hemisphere
L Frontomarginal gyrus	2.341	0.137	2.359	0.170	0.804	0.372
L Inferior occipital gyrus	2.493	0.184	2.570	0.195	4.226	0.043
L Paracentral lobule	2.366	0.210	2.424	0.170	0.704	0.404
L Subcentral gyrus	2.693	0.198	2.729	0.170	0.807	0.371
L Transverse frontopolar gyrus	2.589	0.208	2.672	0.208	2.101	0.151
L Anterior cingulate gyrus	2.723	0.161	2.789	0.147	4.181	0.044
L Anterior mid-cingulate gyrus	2.679	0.154	2.731	0.159	1.525	0.220
L Posterior mid-cingulate gyrus	2.560	0.221	2.595	0.185	0.826	0.366
L Dorsal posterior cingulate gyrus	2.654	0.485	2.797	0.425	2.544	0.114
L Ventral posterior cingulate gyrus	2.490	0.287	2.570	0.286	3.825	0.053
L Cuneus	1.861	0.318	1.842	0.357	0.295	0.588
L Pars opercularis	2.711	0.217	2.841	0.154	13.380	4.19×10-4
L Pars orbitalis	2.682	0.308	2.806	0.214	3.625	0.060
L Pars triangularis	2.666	0.190	2.718	0.176	0.815	0.369
L Middle frontal gyrus	2.748	0.233	2.763	0.169	0.068	0.794
L Superior frontal gyrus	3.010	0.268	3.054	0.242	0.232	0.631
L Long insular gyrus	2.907	0.292	3.007	0.258	2.184	0.143
L Short insular gyrus	3.173	0.564	3.359	0.492	2.241	0.138
L Middle occipital gyrus	2.542	0.185	2.603	0.158	2.489	0.118
L Superior occipital gyrus	2.082	0.245	2.134	0.201	1.079	0.302
L Lateral occipito-temporal gyrus	2.739	0.327	2.783	0.240	0.828	0.365
L Lingual gyrus	1.999	0.258	1.946	0.223	0.932	0.337
L Parahippocampal gyrus	2.866	0.275	2.977	0.224	4.977	0.028
L Orbital gyrus	2.650	0.171	2.694	0.172	0.764	0.384
L Angular gyrus	2.593	0.182	2.678	0.164	4.329	0.040
L Supramarginal gyrus	2.606	0.314	2.749	0.250	5.515	0.021
L Superior parietal lobule	2.429	0.202	2.441	0.147	0.014	0.907
L Postcentral gyrus	2.180	0.167	2.245	0.177	1.627	0.205
L Precentral gyrus	2.778	0.209	2.840	0.204	0.998	0.320
L Precuneus	2.467	0.181	2.531	0.145	2.657	0.106
L Straight gyrus	2.534	0.299	2.653	0.337	3.779	0.055
L Subcallosal gyrus	2.469	0.295	2.500	0.414	0.001	0.978
L Anterior transverse temporal gyrus	2.416	0.431	2.309	0.397	2.898	0.092
L Lateral superior temporal gyrus	2.903	0.261	3.035	0.263	4.258	0.042
L Planum polare	3.233	0.355	3.377	0.295	5.249	0.024
L Planum temporale	2.569	0.200	2.653	0.207	2.597	0.110
L Inferior temporal gyrus	2.748	0.291	2.917	0.266	9.316	0.003
L Middle temporal gyrus	2.960	0.316	3.043	0.248	2.443	0.121
Right hemisphere
R Frontomarginal gyrus	2.339	0.220	2.396	0.173	1.731	0.191
R Inferior occipital gyrus	2.629	0.214	2.714	0.211	5.123	0.026
R Paracentral lobule	2.395	0.197	2.408	0.210	0.009	0.923
R Subcentral gyrus	2.653	0.166	2.766	0.179	7.433	0.008
R Transverse frontopolar gyrus	2.616	0.193	2.645	0.181	0.130	0.719
R Anterior cingulate gyrus	2.698	0.157	2.775	0.139	6.199	0.015
R Anterior mid-cingulate gyrus	2.778	0.161	2.816	0.124	1.118	0.293
R Posterior mid-cingulate gyrus	2.632	0.135	2.638	0.198	0.029	0.864
R Dorsal posterior cingulate gyrus	2.697	0.479	2.830	0.401	2.621	0.109
R Ventral posterior cingulate gyrus	2.586	0.313	2.668	0.313	3.302	0.072
R Cuneus	1.911	0.350	1.863	0.316	0.877	0.352
R Pars opercularis	2.775	0.170	2.835	0.174	2.312	0.132
R Pars orbitalis	2.721	0.209	2.827	0.218	3.647	0.059
R Pars triangularis	2.684	0.158	2.752	0.162	3.379	0.069
R Middle frontal gyrus	2.772	0.258	2.809	0.201	0.189	0.665
R Superior frontal gyrus	3.031	0.260	3.050	0.220	0.000	0.993
R Long insular gyrus	3.005	0.388	3.102	0.315	0.897	0.346
R Short insular gyrus	3.053	0.552	3.215	0.438	2.118	0.149
R Middle occipital gyrus	2.585	0.168	2.631	0.167	1.690	0.197
R Superior occipital gyrus	2.112	0.210	2.174	0.176	1.632	0.205
R Lateral occipito-temporal gyrus	2.753	0.301	2.794	0.197	1.194	0.277
R Lingual gyrus	2.072	0.264	1.994	0.233	2.205	0.141
R Parahippocampal gyrus	2.969	0.349	3.053	0.276	1.597	0.209
R Orbital gyrus	2.637	0.194	2.745	0.180	4.753	0.032
R Angular gyrus	2.587	0.196	2.667	0.147	3.867	0.052
R Supramarginal gyrus	2.564	0.323	2.717	0.269	5.242	0.024
R Superior parietal lobule	2.382	0.182	2.426	0.150	1.002	0.319
R Postcentral gyrus	2.126	0.184	2.210	0.177	2.434	0.122
R Precentral gyrus	2.768	0.239	2.825	0.171	1.601	0.209
R Precuneus	2.516	0.199	2.549	0.185	0.368	0.545
R Straight gyrus	2.520	0.321	2.659	0.267	4.755	0.032
R Subcallosal gyrus	2.616	0.484	2.616	0.497	0.009	0.926
R Anterior transverse temporal gyrus	2.407	0.416	2.414	0.382	0.091	0.763
R Lateral superior temporal gyrus	2.887	0.316	3.040	0.280	5.056	0.027
R Planum polare	3.118	0.359	3.159	0.289	0.570	0.452
R Planum temporale	2.600	0.193	2.632	0.212	0.087	0.769
R Inferior temporal gyrus	2.796	0.299	2.923	0.256	4.282	0.041
R Middle temporal gyrus	2.896	0.289	3.012	0.257	3.738	0.056

One-way ANCOVA including age, sex, education level, and total intracranial volume as covariates, was performed. Significant group differences after Bonferroni correction were presented in a bold face. Bonferroni correction was applied for multiple comparisons: p<0.05/76=0.000658. L: left hemisphere, R: right hemisphere