Nature Reviews Cardiology (2019) https://doi.org/10.1038/s41569-019-0221-2 Published online 13 June 2019

In the version of this article initially published online, in Figure 3, the text in the grey box on the right-hand side of the ‘Intrinsic cardiac ganglia’ area (in light blue) was incorrect. The correct text for this box is ‘Efferent parasympathetic neurons’. This error has been corrected for the HTML, PDF and print versions of the article.