Sleep Structure
The medical theory of sleep staging
Sleep staging can be divided into wake, light sleep, deep sleep and REM sleep. The division of Sleep staging of REM and NREM in different theory is consistent. However, there are some differences in the distinction between light sleep and deep sleep in NREM. CPC is similar to the theory of European CAP/ NCAP. In many cases and clinical applications, the classification of CPC between stable state and non-stable state is highly relevant in disease association research
In ancient times, elephants belonged to the upper level of the food chain. Humans belong to the middle level of the food chain and must keep alert. However, rats belong to the lower level of the food chain and have many natural enemies. Therefore rates must always stay alert at all times. This factor causes different species to have different sleep structures.
Sleep staging can be divided into wake, light sleep, deep sleep and REM sleep. The division of Sleep staging of REM and NREM in different theory is consistent. However, there are some differences in the distinction between light sleep and deep sleep in NREM. CPC is similar to the theory of European CAP/ NCAP. In many cases and clinical applications, the classification of CPC between stable state and non-stable state is highly relevant in disease association research
In ancient times, elephants belonged to the upper level of the food chain. Humans belong to the middle level of the food chain and must keep alert. However, rats belong to the lower level of the food chain and have many natural enemies. Therefore rates must always stay alert at all times. This factor causes different species to have different sleep structures.