Since 2003 Professor Robert Walker has been an emeritus Professor of Neurophysiology. Prior to that he was Chair, Honours School of Biochemistry and Physiology, 1996-2003; Head, Department of Physiology and Pharmacology, 1990-1996; Chair, School of Biochemical and Physiological Sciences, 1987-1990; all at University of Southampton. His research involves the study of neuronal circuits associated with behaviour of the model organism, Caenorhabditis elegans, the mechanisms of action of novel anti-parasite compounds (anthelmintics) and the evolution of classical chemical transmitters and neuropeptides in the metazoa.