Scientific Reports 6: Article number: 24350; published online: 15 April 2016; updated: 11 April 2017

In this Article, an additional affiliation for Paul F.M.J. Verschure was omitted. The correct affiliations for Paul F.M.J. Verschure are listed below:

SPECS, Universitat Pompeu Fabra, Barcelona, Spain.

ICREA - Institució Catalana de Recerca i Estudis Avançats, 08018 Barcelona, Spain.