Nature Research, Nature Neuroscience, 10(6), p. 1005-1006, 2003
DOI: 10.1038/nn1003-1005
Full text: Download
A homeostatic control mechanism that monitors and reacts to the need for sleep has been thought to function independently of the brain's circadian clock in previous studies. Now simultaneous recordings of sleep stages and electrical activity in the suprachiasmatic nucleus in behaving animals reveal feedback from sleep centers to the circadian pacemaker.