Figure 42
From: Transdisciplinary unifying implications of circadian findings in the 1950s
Emergenic heritability of the circadian amplitude of human heart rate. Assessed by statistically significant intra-class correlation (rI) for monozygotic (MZ) but not for dizygotic (DZ) twin pairs reared apart. Heart rate was assessed in 24-hour electrocardiograms, amplitude was computed by cosinor; a statistically significant intra-class correlation (r1) for monozygotic (MZ) but not for dizygotic (DZ) twin pairs reared apart was found [85, 304].