Schwartenbeck, Philipp
FitzGerald, Thomas H. B.
Mathys, Christoph
Dolan, Ray
Kronbichler, Martin
Friston, Karl
Article History
Received: 12 February 2015
Accepted: 19 October 2015
First Online: 13 November 2015
Competing interests
: The authors declare no competing financial interests.