Most of us are spending one-third of our life for sleeping.
Sleep is not as simple as ‘switch off’ our mind and let it rest, but the dynamic and complicated condition that the brain is still active.
There are two behavior patterns during sleep which can be differentiate into two major types of sleep from the sleep cycle:
i. Slow-wave sleep (deep sleep)
The sleeper still have the considerable muscle tone in this stage of sleep, which means that their muscle is not relaxed during sleeping. He/she will frequently shift body position, easily awake due to disturbance, minor reduction in respiratory rate, heart rate and blood pressure. The sleeper’s mental activity is less visual than dreaming, and nightmare might occur in the stage of sleep.
ii. Paradoxical sleep: Rapid Eye Movement (REM) Sleep.
The muscles of sleeper will completely relaxed in this stage in sleep cycle, except eye muscle. The heart beating rate and respiratory rate will be irregular, whereas the blood pressure will be fluctuated. Dreaming will occur here.
P/s: The rapid movement of eyes are driven in a locked and oscillating patterns which uninfluenced by dream content and it is NOT watching the dream imagery!
P/s: The rapid movement of eyes are driven in a locked and oscillating patterns which uninfluenced by dream content and it is NOT watching the dream imagery!
Above is the image talking about human sleep cycle. The details of sleep cycle will be discussed in the following post in details.
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