1. School of Engineering, Cardiff University, Cardiff CF10 3AT, UK
2. School of Computer Science and Informatics, Cardiff University, Cardiff CF24 3AA, UK
3. Cardiff University Brain Research Imaging Centre (CUBRIC), School of Psychology, Cardiff University, Cardiff CF24 4HQ, UK
4. Functional Neurosurgery Research Group, School of Clinical Sciences, University of Bristol, Bristol, UK
5. Renishaw Neuro Solutions Ltd, Wotton Road, Wotton-under-Edge GL12 8SP, UK