Examples of sleep stages
No one can “jump” from one stage to another. We find 5 phases of sleep , although previously only 4 were recognized. It was thanks to the scientist Jouvet that one more stage was marked.
Transition phase: It is also known as the waking phase , its main characteristic is that it does not allow brain waves to work. Its duration is 5 to 10 minutes, it is a state where the body does not move and causes theta waves.
Light sleep phase: It is the combination of theta waves and «K» waves that occur several times per minute. When a person is in this stage, it is sought that they cannot wake up. They reduce the heart rate and lower the body temperature.
Deep sleep phase: During this phase, delta waves are secreted above theta waves. Its duration is 3 to 5 minutes maximum.
REM sleep phase: In some parts it is known as the paradoxical sleep phase. During this phase the nervous system is activated. Basically in this stage dreams appear that carry a continuation and that allow us to be relatively aware.