Table 2 Vertex-based cortical thickness analyses of sex effects

Cluster peak location^a	Cluster size, mm²	Number of vertices	Talairach coordinates			−log₁₀ P-value
Cluster peak location^a	Cluster size, mm²	Number of vertices	x	y	z	−log₁₀ P-value
Sex-by-group interaction
Left posterior cingulate cortex	7846	16,820	−4.7	−27.9	34.6	3.18
Left superior parietal cortex	3279	8099	−32.0	−38.9	39.2	3.44
Right paracentral cortex	8607	18,097	5.2	−25.1	66.3	3.40
Sex effect in iRBD
Left postcentral cortex	13,676	29,086	−34.5	−32.9	41.1	5.53
Left inferior parietal cortex	2616	4909	−44.6	−73.2	14.4	4.26
Right caudal middle frontal cortex	3415	6690	37.6	2.3	34.7	3.89
Right inferior parietal cortex	3276	7191	41.6	−70.3	36.0	3.16
Right rostral middle frontal cortex	2778	4435	22.2	52.1	24.1	2.81
Right paracentral cortex	2448	5660	7.8	−11.9	60.6	4.09

Clusters were considered significant after Monte-Carlo simulation, with cluster- and vertex-level P-values set at P < 0.05.
^aOnly the region of the peak vertex is indicated (see Fig. 2 and Fig. S1 for mapping).
iRBD = isolated REM sleep behavior disorder.

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