ECTLS - Combien de temps dure un cycle de sommeil ? - Vidéo Dailymotion

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00:00How long does a sleep cycle last?

00:03Sleep is made up of several successive periods, which last between 60 and 120 minutes each.

00:08For a reparatory night's rest, it is recommended to sleep on 3 to 5 cycles.

00:13Every night, it's the same sequence that comes up.

00:16There is first the phase of light sleep, a few-minute sleep that can be disturbed by the slightest noise.

00:22Then follow the periods of slow sleep and paradoxical sleep.

00:26Slow sleep is characterized by specific waves.

00:29They lead to a gradual decrease in brain activity.

00:33Paradoxical sleep, on the other hand, is translated by a low oxygen consumption

00:38and by brain activity close to the awakening phase.

00:41It is often at this moment that dreams appear.