Nature Communications 6: Article number: 6323 (2015); Published online 26 February 2015; Updated 21 May 2015.

The authors inadvertently omitted Jennifer K. Pirri and Mark J. Alkema, who developed a promoter construct presented in this Article, from the author list, Acknowledgments, Author contributions statement and Methods section. In addition, in Fig. 3b, the y axis was incorrectly labelled as Charge frequency (pC/s) instead of AP frequency (Hz). In Fig. 4c the asterisks for significance were omitted from the third panel in the right. Finally, in Fig. 4e, Prgef-1 was incorrectly named promoter. All these errors have now been corrected in both the PDF and HTML versions of the Article.