Mark Humphries, Ph.D., is a theoretical neuroscientist, hunting for clues to how the activity of a bunch of tiny bags of chemicals—neurons—create thought, word, and deed. He currently holds a Medical Research Council Senior Fellowship, and is a Senior Research Fellow at the University of Manchester, UK. Mark's research has been published in the leading international journals of science. His forlorn ambition is to make people as excited about the basal ganglia as he is. He lives with his wife, daughter, and son in Sheffield, UK.