Table 5. Meta-Analyses on Zero-Order, Age-Adjusted, Non-ROI thickness-Adjusted Partial Correlation Coefficients of Cortical Thickness in Selected Regions of Interest (ROI) and Resting State Heart Rate Variability across Study 1 and Study 2 (Right Hemisphere);

Fixed effect meta-analyses; values represent correlation coefficients (r) and their 95% confidence interval; ACC: anterior cingulate cortex; MFG: middle frontal gyrus; OFC: orbital frontal cortex; * and bold: highlights a significant meta correlation on the p < .05 level; ** and bold: highlights a significant meta correlation on the p < .01 level

Meta-analyses	Right Hemisphere
	unadjusted		age adjusted		non-ROI thickness adjusted		age & non-ROI thickness adjusted
	meta r	95%CI	meta r	95%CI	meta r	95%CI	meta r	95%CI
Caudal ACC	0.139	−0.077; 0.342	0.043	−0.175; 0.256	0.056	−0.162; 0.268	0.028	−0.191; 0.245
Rostral ACC	0.175	−0.039; 0.374	0.081	−0.137; 0.292	0.069	−0.149; 0.280	0.069	−0.152; 0.283
Caudal MFG	0.234*	0.022; 0.426	0.113	−0.105; 0.321	0.094	−0.124; 0.304	0.113	−0.108; 0.324
Rostral MFG	0.222*	0.009; 0.415	0.086	−0.132; 0.297	0.062	−0.156; 0.274	0.060	−0.160; 0.275
Lateral OFC	0.222*	0.010; 0.416	0.090	−0.128; 0.300	0.055	−0.163; 0.268	0.067	−0.153; 0.282
Medial OFC	0.126	−0.090; 0.330	0.040	−0.178; 0.253	0.032	−0.185; 0.246	0.027	−0.193; 0.244
Pars opercularis	0.280**	0.071; 0.465	0.117	−0.101; 0.325	0.137	−0.081; 0.343	0.105	−0.116; 0.316
Pars orbitalis	0.221*	0.009; 0.415	0.093	−0.125; 0.303	0.067	−0.151; 0.279	0.081	−0.139; 0.295
Pars triangularis	0.268*	0.058; 0.455	0.085	−0.133; 0.295	0.143	−0.075; 0.348	0.075	−0.146; 0.289
Superior frontal gyrus	0.215*	0.002; 0.410	0.034	−0.183; 0.248	0.035	−0.183; 0.248	0.016	−0.203; 0.234
Frontal pole	0.084	−0.131; 0.292	−0.044	−0.257; 0.174	−0.080	−0.291; 0.138	−0.079	−0.292; 0.142
Insula	0.230*	0.017; 0.422	0.084	−0.134; 0.294	0.068	−0.150; 0.280	0.081	−0.140; 0.294