espèce (2) sommeil (2) animal (2) herbe (2) règlement (2) Control (2) Suprachiasmatic nucleus (2) Work (2) Wakefulness (2) Vasoactive intestinal peptide (2) Species (2) Sleep (2) Rodents (2) Rhythm (2) Rattus norvegicus (2) Rats (2) Neurons (2) Hypothesis (2) Hypothalamus (2) Functions (2) Fibers (2) Expression (2) Circadian rhythms (2) Regulation (2) Rhythm (2)