What is Sleep?
It is a temporary reversible state of unconsciousness. This is not same all though the time but it is a cyclical pattern of events. The sleep has two phases:Most dreams occurs during REM sleep.
Alcohol and other sedatives decrease this phase of sleep. REM is approximately 25% of our total sleep.
Infant has total of 16 hours of sleep out of which 50% is REM but as the age advances there is decrease in total sleep time and also decrease in REM to 25%.
Sleep disordered breathing
The spectrum of this disorder may range from