Dr. Peter Meerlo is Associate Professor in the workgroup Chronobiology at the Groningen Institute for Evolutionary Life Sciences of the University of Groningen. His expertise is in circadian rhythms and sleep with special emphasis on, 1) the role of sleep in neuronal plasticity and brain function; 2) neurobiological consequences of restricted sleep or disrupted sleep; and 3) modulation of sleep and circadian rhythms by environmental factors and stress.