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In a famous episode of the TV show Seinfeld, a "close talker" makes others uncomfortable by standing mere centimeters from their
In a famous episode of the TV show Seinfeld, a "close talker" makes others uncomfortable by standing mere centimeters from their
admin
2015-03-25
100
问题
In a famous episode of the TV show Seinfeld, a "close talker" makes others uncomfortable by standing mere centimeters from their faces while speaking. What makes this invasion of our personal space so uncomfortable? A new study fingers the amygdala, a region of the brain that acts like a warning bell when someone gets too close for comfort.
Psychologists have studied personal space since the 1960s. They’ve found that Americans and northern Europeans prefer a larger personal space than southern Europeans, for example, whereas people with autism(a tendency to view life in terms of one’s own needs and desires)tend to unknowingly invade others’ personal space. Studies in monkeys have hinted that the amygdala, an almond-shaped region in the middle of the brain that helps us recognize threats, plays a role in personal space. But the theory proved hard to test in humans.
Then, about 15 years ago, neuroscientists at the California Institute of Technology in Pasadena met a 42-year-old woman with a rare genetic disorder that destroyed both sides of her amygdala. In early experiments, the scientists discovered that the woman, referred to as SM, couldn’t spot fear in other people’s faces; she also rated people as more trustworthy than an average person did. And she was extremely outgoing, "almost to the point where it isn’t normal," says team member Daniel Kennedy. Even if she’s only just met someone, he says, SM will invade their personal space—touching their arm as she talks or poking their stomach.
In the new study, Kennedy and his colleagues more rigorously tested SM’s sense of personal space. They compared her with 20 healthy subjects in a series of experiments. In one test, an experimenter slowly walked toward a subject until the subject felt uncomfortable and told the experimenter to stop. SM let experimenters get about twice as close as other subjects did, 0. 34 meters versus 0.64 meters, the team reports online this week in Nature Neuroscience. She even felt fine standing nose to nose with an experimenter.
Further experiments revealed why. Kennedy and his colleagues placed eight healthy subjects, one at a time, inside a functional magnetic resonance imaging scanner, which measures brain activity. Then an experimenter stood either about 4. 5 meters away from the machine or right next to the machine’s opening. The subjects’ amygdalas lit up with significantly more activity when the stranger stood close by. "Our findings support the idea that the amygdala functions as the brakes in social interactions," Kennedy says. "If you take away the amygdala, it seems like you are less tuned to...social(behaviors)that can cause discomfort. "
The study is "a
novel
piece of research" that is the first to identify a neural(of a nerve or the nervous system)source of personal space in people, says Richard Davidson, a neuroscientist at the University of Wisconsin, Madison. "It’s also part of a growing series of studies that underscore the importance of the amygdala in human social interactions," he says.
The 42-year-old woman mentioned in the third paragraph
选项
A、is more trustworthy than other people.
B、doesn’t like stay near others.
C、is not sharp on personal space.
D、is abnormal in mind.
答案
C
解析
推理判断题。由题干关键词定位至第三段。该段对该女性的基本状况进行了介绍,由她不能够从其他人的脸色中辨识出恐惧,即使她只是与人初识,SM也会侵犯他们的个人空间等可以推知,她在个人空间方面不是很敏感。[C]与之相符,故为正确答案。该段第二句说的是她对别人抱有更多的信赖,而非她比别人更可信,故排除[A];由该段末句可知,她喜欢与人靠近甚至发生身体接触,故排除[B];该段首句只是提及她扁桃腺的两侧失去功能,并非精神不正常,故排除[D]。
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0
考研英语一
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