1 School of Psychology, University of Sussex, Brighton, United Kingdom.
2 Department of Systems and Computational Biology and Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY, USA.
3 Department of Experimental Psychology, University College London, London, United Kingdom.
4 Department of Psychology and Graduate Program in Integrative Neuroscience, University of Nevada, Reno, Reno NV, USA. Electronic address: mwebster@unr.edu.