Timing of Sleep and Wakefulness

The brain functions like a computer composed of subsystems which in­ teract in a hierarchical manner. But it is not a single hierarchy, but a com­ plex system of hierarchies each of which has its very own and unique fea­ ture. One of these concerns the cyclic or rhythmic control of neuronal ac­ tivities which, among others, give rise to alternating states of wakefulness and sleep. The phenomenon o...