题目内容
（请给出正确答案）
A.it is the possibility
B.is the possibility
C.it is possible
D.then is possible
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更多“By observing REM,or rapid eye …”相关的问题
Nowadays mystery shoppers are armed with a number of high-tech devices()for recording the entire experience.
A、all of the events occurring
B、things seen and lived through
C、the act of doing and observing
D、knowledge gained by doing and observing
What is the lecture mainly about？
A．Methods of observing unusual animal behavior
B．A theory about ways birds attract mates
C．Ways animals behave when they have conflicting drives
D．Criteria for classifying animal behaviors
Although some people insist that they do not dream at all, researchers say that all people dream unless they consume alcohol or take drugs that suppress REM sleep. Are dreaming and REM sleep essentially one and the same？ Some researchers have questioned an assumption
long held by some sleep experts that dreaming is simply the brain's effort to make sense of the random firing of neurons that occurs during REM sleep. Are the brain mechanisms responsible for REM sleep the same ones that create the rich dream world we experience？ The answer may be no. It is known that dreams do occur outside of REM sleep. Moreover, the REM state can exist without dreams. These two facts suggest that different but complementary brain mechanisms are responsible for REM sleep and the dreaming that normally occurs within it. There is mounting evidence, says British researcher Mark Solms, that dreaming and REM sleep, while normally occurring together, are not one and the same. Rather, the REM state is controlled by neural mechanisms in the brain stem, while areas farther up in the forebrain provide the common pathway that gives us the complex and often vivid mental experiences we call dreams.
Other researchers suggest that REM sleep aids in information processing, helping people sift through daily experience to organize and store in memory information that is relevant to them. Animal studies provide strong evidence for a relationship between REM sleep and learning. Some studies have revealed that animals increase their REM sleep following learning sessions. Other studies have indicated that when animals are deprived of REM sleep after new learning, their performance of the learned task is impaired the following day. But depriving subjects of NREM sleep had no such effect in the studies.
Research has shown that REM sleep serves an information-processing function in humans and is involved in the consolidation of memories after human learning. Researchers found that research participants learning a new perceptual skill showed an improvement in performance, with no additional practice, eight to ten hours later if they had a normal night's sleep or if the researchers disturbed only their NREM sleep. Performance did not improve, however, in those who were deprived of REM sleep.
There is no doubt that REM sleep serves an important function, even if psychologists do not know precisely what that function is. The fact that newborns have such a high percentage of REM sleep has led to the conclusion that REM sleep is necessary for maturation of the brain in infants. Furthermore, when people are deprived of REM sleep as a result of general sleep loss or illness, they will make up for the loss by getting an increased amount of REM sleep after the deprivation. This increase in the percentage of REM sleep to make up for REM deprivation is called a "REM rebound." Because the intensity of REM sleep is increased during a REM rebound, nightmares often occur.
Why does the author state "The answer may be no" in paragraph 2？
A．To introduce a theory that REM sleep and dreams are not necessarily connected.
B．To contrast dreaming before and after REM sleep.
C．To explain why dreaming and REM sleep are essentially the same.
D．To suggest that more dreams occur inside REM sleep than outside it.
Researchers have found that REM(rapid eye movement)sleep is important to human beings. This type of sleep generally occurs four or five times during one night of sleep lasting five minutes to forty minutes for each occurrence. The deeper a persons sleep becomes, the longer the periods of rapid eye movement. There are physical changes in the body to show that a person has changed from NREM(non-rapid eye movement)to REM sleep. Breathing becomes faster, the heart rate increases, and, as the name implies, the eyes begin to move quickly. Accompanying these physical changes in the body there is a very important characteristic of REM sleep. It is during REM sleep that a person dreams.
According to the passage, how often does REM sleep occur in one night？
A．Once.
B．Twice.
C．Four or five times.
D．Forty times.
A.im a（10） As Integer Rem这是一个VB程序
B.这是一个VB程序 Private Sub Command1_Click&hellip
C.＝1:b＝2:_Rem这是一个VB程序：c＝3
D.If Shift=6 And Button=2 Then Print"BBBB" Rem 这是一个VB程序 End If
