Boto, Elena
Holmes, Niall
Leggett, James
Roberts, Gillian
Shah, Vishal
Meyer, Sofie S.
Muñoz, Leonardo Duque
Mullinger, Karen J.
Tierney, Tim M.
Bestmann, Sven
Barnes, Gareth R.
Bowtell, Richard
Brookes, Matthew J.
Article History
Received: 11 August 2017
Accepted: 13 February 2018
First Online: 21 March 2018
Competing interests
: V.S. is the founding director of QuSpin, the commercial entity selling OPM magnetometers. QuSpin built the sensors used here and advised on the system design and operation, but played no part in the subsequent measurements or data analysis. This work was funded by a Wellcome award which involves a collaboration agreement with QuSpin.