The<unk>  <unk>  is a sleep disorder diagnostic tool.  It used to measure the time it takes from the start of a daytime nap period to the first signs of sleep, called sleep<unk> .  The<unk>  is based on the idea that the sleepier people are, the faster they will fall asleep.
It can be used to<unk>  for narcolepsy, to distinguish between physical tiredness and true excessive daytime sleepiness, or to see if breathing disorder treatments are working.  Its main purpose is to serve as an objective measure of sleepiness.
The<unk>  consists of four or five, twenty minute naps that are scheduled about two hours apart.  The<unk>  is often done following an overnight sleep study.  During the<unk>  things such as the patient's brain waves, EEG, muscle activity and eye movements are monitored and recorded. The entire<unk>  normally takes about 7 hours.
The<unk>  may also be used more extensively to<unk>  sleepiness in a number of other research and diagnostic protocols.
Multiple Sleep Latency Test
Mini mental state examination
Event-related functional magnetic resonance imaging
Abbreviated mental test score
Epworth Sleepiness Scale
Sleep log
Positive and Negative Syndrome Scale
Cognitive test