雅思阅读真题+题目+答案：Tickling and Laughter

雅思阅读真题+题目+答案：Tickling and Laughter

A

The fingers of an outstretched aim are nearing your body; you bend away folding your torso, bending your head to your shoulder in hopes that you don’t get tickled; but the inevitable occurs: yon arc tickled and in hysterics, you chuckle, titter, and burst into uncontrollable laughter. Why do we laugh when we are tickled?

B

Tickling is caused by a light sensation across our skin. At times the light sensation can cause itching; however, most of the time it causes giggling. If a feather is gently moved across the surface of the skin, it can also cause tickling and giggling. Heavy laughter is caused by someone or something placing repeated pressure on a person and tickling a particular area. The spots tickled often are feet, toes, sides, underarms, and neck which cause a great deal of laughter. Yngve Zotterman from Karolinska Institute has found that tickling sensations involve signals from nerve fibers. These nerve fibers are associated with pain and touch. Also, Zotterman has discovered tickling sensations to be associated not only with nerve fibers but also with sense of touch because people who have lost pain sensations still laugh when tickled. But really, why do we laugh? Why are we not able to tickle ourselves? What part of the brain is responsible for laughter and humor? Why do we say some people have no sense of humor?

C

Research has shown that laughter is more than just a person’s voice and movement and that it requires the coordination of many muscles throughout the body. Laughter also increases blood pressure and heart rate, changes breathing, reduces levels of certain neurochemicals (catecholamines, hormones) and provides a boost to dying immune system. Can laughter improve health? It may be a good way for people to relax because muscle tension is reduced after laughing. Human tests have found some evidence that humorous videos and tapes can reduce feelings of pain, prevent negative stress reactions and boost the brain’s biological battle against infection.

D

Researchers believe we process humor and laughter through a complex pathway of brain activity that encompasses three main brain components. In one new study, researchers used imaging equipment to photograph die brain activity of healthy volunteers while they underwent a sidesplitting assignment of reading written jokes, viewing cartoons from The New Yorker magazine as well as “The Far Side” and listening to digital recordings of laughter. Preliminary results indicate that the humor-processing pathway includes parts of the frontal lobe brain area, important for cognitive processing the supplementary motor area, important for movement; and the nucleus accumbens, associated with pleasure. Investigations support the notion that parts of the frontal lobe are involved in humor. Subjects’ brains were imaged while they were listening to jokes. An area of the frontal lobe was activated only when they thought a joke was funny. In a study that compared healthy individuals with people who had damage to their frontal lobes, the subjects with damaged frontal lobes were more likely to choose wrong punch lines to written jokes and didn’t laugh or smile as much at funny cartoons or jokes.

E

Even though we may know more about what parts of the brain are responsible for humor, it is still hard to explain why we don’t laugh or giggle when we tickle ourselves. Darwin theorized within “The Expressions of the Emotions in Man and Animals” that there was a link between tickling and laughter because of the anticipation of pleasure. Because we cannot tickle ourselves and have caused laughter, Darwin speculated surprise from another person touching a sensitive spot must have caused laughter. Some scientists believe that laughing caused by tickling is a 。。。。。。。余下雅思阅读真题原文省略！

Questions 1-7

The Reading Passage has 7 paragraphs, A-G.

Which paragraph contains the following information?

Write the appropriate letter, A-G, in boxes 1-7 on your answer sheet.

NB You may use any letter more than once.

1 Location of a brain section essential to the recognition of jokes

2 Laughter enhances immunity

3 Individual differences and the appreciation of humour

4 Parts of the brain responsible for tickling reflex

5 Neuropsychological mechanisms by which humor and laughter work

6 The connection between tickling and nerve fibers

7 Patients with emotional disorders

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