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Table 4 Correlations (r (p)) of heartrate-related measures with HEP (over frontal and central electrodes), cortisol levels and borderline symptom severity (BSL-23). Significant correlations are marked with * and printed in bold. These correlations survived Bonferroni correction (corrected for 6 factors, i.e. HEP frontal, HEP central, BSL-23, cortisol, heartrate and HRV-variables (whereby PNS index, SNS, Stress index, SDNN were pooled into a single one factor due to their close interrelation) resulting in p < 0.05/6 = 0.0083). Statistics of variables among each other and redundant results are not shown

From: Altered interoception in patients with borderline personality disorder: a study using heartbeat-evoked potentials

  PNS index SNS index Stress index SDNN Mean HR Cortisol BSL-23
HEP frontal 0.3871 (0.018) 0.158 (0.351) 0.137 (0.420) −0.277 (0.097) 0.116 (0.495) −0.169 (0.325) −0.248 (0.139)
HEP central 0.523 (0.001)* −0.323 (0.051) −0.2268 (0.108) 0.129 (0.446) −0.391 (0.017) − 0.399 (0.016) −0.083 (0.626)
BSL-23 0.135 (0.425) 0.405 (0.013) 0.493 (0.002)* −0.483 (0.002)* 0.362 (0.028) −0.001 (0.994)  
Cortisol −0.155 (0.365) 0.411 (0.013) 0.374 (0.025) −0.163 (0.341) 0.336 (0.045)