2. A NEW AUTOMATED METHOD FOR RAT SLEEP- DEPRIVATION WITH MINIMAL CONFOUNDING EFFECTS ON CORTICOSTERONE AND LOCOMOTOR ACTIVITY Cathalijn H.C. Leenaars Maurice Dematteis Ruud N.J.M.A. Joosten Leslie Eggels Hans Sandberg Mischa Schirris Matthijs G.P Feenstra Eus J.W. Van Someren J Neurosci Met hods 196: 107-117