Sleepwalking, commonly known as sleepwalking, is primarily the result of activity in the human cerebral cortex. Brain activity, including “excitation” and “inhibition” two processes. Usually, when a person is sleeping, the cells of the cerebral cortex are in a state of inhibition. If there is a group or groups of nerve cells innervating movement are still in a state of excitation, sleep walking disorder will occur. The scope of action of sleep walking disorder is often the most familiar environment of the person with sleep walking disorder and often repeated actions. Sleep walking disorder is often a topic of conversation. People are amazed by the phenomenon of sleepwalking and have developed a range of distinct prejudices against it. The common belief is that people with somnambulism probably walk around like blind people, but in fact, people with somnambulism have their eyes half-open or fully-open, and they walk in the same way as they normally do. People also think that people with somnambulism are bold and dare to do some frightening and scary actions, but in fact, people with somnambulism seldom do anything out of the ordinary, and seldom make injurious and offensive behaviors when somnambulism is present. Of course, people with somnambulism may occasionally fall and hurt themselves due to distraction. There is also a common prejudice that a person with Narcolepsy should not be woken up because he or she will go crazy if woken up suddenly. In fact, it is very difficult to wake up a somnambulist, and even if he is awakened, he will not go crazy, but will only be confused. Others believe that somnambulists are in fact dreaming, but psychologists have observed that somnambulism tends to occur during non-REM periods when dreaming is rare.