Erratum: Music structure determines heart rate variability of singers.

[This corrects the article on p. 334 in vol. 4, PMID: 23847555.

Music structure determines heart rate variability of singers.

Choir singing is known to promote wellbeing. One reason for this may be that singing demands a slower than normal respiration, which may in turn affect heart activity. Coupling of heart rate variability (HRV) to respiration is called Respiratory sinus arrhythmia (RSA).