What Dreams Are Made Of

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READING PASSAGE 15113s3

You should spend about 20 minutes on Question 27-40, which are based on Reading Passage 3 on the following pages.

 

What Dreams Are Made Of

 

A

Thousands of years ago, dreams were seen as messages from the gods, and in many cultures, they are still considered prophetic.In ancient Greece, sick people slept at the temples of Asclepius, the god of medicine, in order to receive dreams that would heal them Modern dream science really begins at the end of the 19th century with Sigmund Freud, who theorized that dreams were the expression of unconscious desires often stemming from childhood. He believed that exploring these hidden emotions through analysis could help cure mental illness. The Freudian model of psychoanalysis dominated until the 1970s, when new research into the chemistry of the brain showed that emotional problems could have biological or chemical roots, as well as environmental ones. In other words, we weren’t sick just because of something our mothers did (or didn’t do), but because of some imbalance that might be cured with medication.

 

B

After Freud, the most important event in dream science was the discovery in the early 1950s of a phase of sleep characterized by intense brain activity and rapid eye movement (REM). People awakened in the midst of REM sleep reported vivid dreams, which led researchers to conclude that most dreaming took place during REM. Using the electroencephalograph (EEG), researchers could see that brain activity during REM resembled that of the waking brain. That told them that a lot more was going on at night than anyone had suspected. But what, exactly?

 

C

Scientists still don’t know for sure, although they have lots of theories. On one side are scientists like Harvard’s Allan Hobson, who believes that dreams are essentially random. In the 1970s, Hobson and his colleague Robert McCarley proposed what they called the “activation-synthesis hypothesis,” which describes how dreams are formed by nerve signals sent out during REM sleep from a small area at the base of the brain called the pons. These signals, the researchers said, activate the images that we call dreams. That put a crimp in dream research; if dreams were meaningless nocturnal firings, what was the point of studying them?

 

D

Adult humans spend about a quarter of their sleep time in REM, much of It dreaming. During that time, the body is essentially paralyzed but the brain is buzzing. Scientists using PET and fMRI technology to watch the dreaming brain have found that one of the most active areas during REM is the limbic system, which controls our emotions. Much less active is the prefrontal cortex, which is associated with logical thinking. That could explain why dreams in REM sleep often lack a coherent story line. (Some researchers have also found that people dream in non-REM sleep as well, although those dreams generally are less vivid.) Another active part of the brain in REM sleep is the anterior cingulate cortex, which detects discrepancies. Eric Nofzinger, director of the Sleep Neuroimaging Program at the University of Pittsburgh Medical Center, thinks that could be why people often figure out thorny problems in their dreams. “It’s as if the brain surveys the internal milieu and tries to figure out what it should be doing, and whether our actions conflict with who we are,” he says.

 

E

These may seem like vital mental functions, but no one has yet been able to say that REM sleep or dreaming is essential to life or even sanity. MAO inhibitors, an older class of antidepressants, essentially block REM sleep without any detectable effects, although people do get a ”REM rebound”—extra REMif they stop the medication. That’s also true of selective serotonin reuptake inhibitors (SSRIs) like Prozac, which reduce dreaming by a third to a half. Even permanently losing the ability to dream doesn’t have to be disabling. Israeli researcher Peretz Lavie has been observing a patient named Yuval Chamtzani, who was injured by a fragment of shrapnel that penetrated his brain when he was 19. As a result, he gets no REM sleep and doesn’t remember any dreams. But Lavie says that Chamtzani, now 55, “is probably the most normal person I know and one of the most successful ones.” He’s a lawyer, a painter and the editor of a puzzle column in a popular Israeli newspaper.

 

F

The mystery of REM sleep is that even though it may not be essential, it is ubiquitous—at least in mammals and birds. But that doesn’t mean all mammals and birds dream (or if they do, they’re certainly not —talking about it). Some researchers think REM may have evolved for physiological reasons. “One thing that’s unique about mammals and birds is that they regulate body temperature,” says neuroscientist Jerry Siegel, director of UCLA’s Center for Sleep Research. “There’s no good evidence that any coldblooded animal has REM sleep.11 REM sleep heats up the brain and non-REM cools it off, Siegel says, and that could mean that the changing sleep cycles allow the brain to repair itself. “It seems likely that REM sleep is filling a basic physiological function and that dreams are a kind of epiphenomenon,” Siegel says—an extraneous byproduct, like foam on beer.

 

G

Whatever the function of dreams at night,they clearly can play a role in therapy during the day. The University of Maryland’s Clara Hill, who has studied the use of dreams in therapy, says that dreams are a “back door” into a patient’s thinking. “Dreams reveal stuff about you that you didn’t know was there,” she says. The therapists she trains to work with patients’ dreams are, in essence, heirs to Freud, using dream imagery to uncover hidden emotions and feelings. Dreams provide clues to the nature of more serious mental illness. Schizophrenics, for example, have poor-quality dreams, usually about objects rather than people. Cartwright has been studying depression in divorced men and women,and she is finding that “good dreamers,” people who have vivid dreams with strong story lines, are less likely to remain depressed. She thinks that dreaming helps diffuse strong emotions. “Dreaming is a mental-health activity,” she says.

 


 

Questions 27-31

Reading passage 3 has seven paragraphs, A-G.

Which paragraph contains the following information?

Write the correct number, A-G, in boxes 1-5 on your answer sheet.

 

27 Reference of an artist’ s dreams.

28 Dream actually happens in animals

29 Dreams are related with benefit and happiness

30 Scientists’ advanced technology used in investigation of REM stage

31 Concern about usefulness of dreams

 

Questions 32-34

Choose the correct letter, A, B, C or D.

Write the correct letter in boxes 32-34 on your answer sheet.

 

32 What were dreams regarded as by ancient people?

A superstation and unreliable

B communication with Gods and chance to foresee future

C medical relief for children with illness

D messages to make them feel better when woke up

 

33 According to Paragraph D, which part of brain controls reasoning?

A anterior cingulate cortex

B internal cortext

C limbic system

D prefrontal cortex

 

34 What can we conclude when author cited reference on animals.?

A Brain temperature rises when REM pattern happens

B the reason why mammals are intelligent

C dreams are bound to appear with REM

D REM makes people want to drink foam of beer.

 

Questions 35-40

Look at the following people and the list of statements below..

Match each statement with the correct person,A-G.

Write the correct letter A-G,in boxes 35-40 on your answer sheet.

 

A Sigmund Freud

B Harvard’s Allan Hobson

C Robert McCarley

D Eric Nofzinger

E Peretz Lavie

F Jerry Siegel

G Clara Hill

 

35 Dream help people tackle problems puzzling them in daytime.

36 He has taken care of a patient who was injured by shrapnel-

37 Dreams sometimes come along with REM as an attachment.

38 People’ s dreams provide ‘backdoor’ to their state of mind.

39 Decoding dreams would be beneficial for mental disease.

40 Dreams are not worth studying as randomly occur.

 


 

 

What Dreams Are Made Of

题目答案

27 E

28 F

29 G

30 D

31 G

32 B

33 D

34 A

35 D

36 E

37 F

38 G

39 A

40 B

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