Basic Rest Activity Cycle

The Basic Rest -Activity Cycle ( BRAC ) of the brain, which is available both in the bedroom and in the waking periods, is a set up by Nathaniel Kleitman hypothesis.

The hypothesis built after the discovery and description of REM sleep in 1953 by Eugene Aserinsky and Nathaniel Kleitman at the later observation of rhythmic alternation between NREM and REM sleep and sets implemented any findings and considerations to.

Kleitman 1982 pointed to a variety of studies that have been carried out since the establishment of the hypothesis and give genuine assumption of a continuous rest activity cycle in the range 80-120 minutes. Nevertheless, the state of research is the hypothesis still an inconsistent picture.