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  3. Scientists have been surprised at how deeply culture—the language we speak, the values we absorb—shapes the brain, and are rethi

Scientists have been surprised at how deeply culture—the language we speak, the values we absorb—shapes the brain, and are rethi

admin2018-03-19  17
问题    Scientists have been surprised at how deeply culture—the language we speak, the values we absorb—shapes the brain, and are rethinking findings derived from studies of Westerners. To take one recent example, a region behind the forehead called the medial prefrontal cortex supposedly represents the self: it is active when we ("we" being the Americans in the study) think of our own identity and traits. But with Chinese volunteers, the results were strikingly different. The "me" circuit hummed not only when they thought whether a particular adjective described themselves, but also when they considered whether it described their mother. The Westerners showed no such overlap between self and mom. Depending whether one lives in a culture that views the self as autonomous and unique or as connected to and part of a larger whole, this neural circuit takes on quite different functions.
   "Cultural neuroscience," as this new field is called, is about discovering such differences. Some of the findings, as with the "me/mom" circuit, buttress longstanding notions of cultural differences. For instance, it is a cultural cliche that Westerners focus on individual objects while East Asians pay attention to context and background (another manifestation of the individualism-collectivism split). Sure enough, when shown complex, busy scenes, Asian-Americans and non-Asian-Americans recruited different brain regions. The Asians showed more activity in areas that process figure-ground relations—holistic context—while the Americans showed more activity in regions that recognize objects.
   Psychologist Nalini Ambady of Tufts found something similar when she and colleagues showed drawings of people in a submissive pose (head down, shoulders hunched) or a dominant one (arms crossed, face forward) to Japanese and Americans. The brain’s dopamine-fueled reward circuit became most active at the sight of the stance—dominant for Americans, submissive for Japanese— that each volunteer’s culture most values, they reported in 2009. This raises an obvious chicken-and-egg question, but the smart money is on culture shaping the brain, not vice versa. Cultural neuroscience wouldn’t be making waves if it found neurobiological bases only for well-known cultural differences. It is also uncovering the unexpected. For instance, a 2006 study found that native Chinese speakers use a different region of the brain to do simple arithmetic (3 + 4) or decide which number is larger than native English speakers do, even though both use Arabic numerals. The Chinese use the circuits that process visual and spatial information and plan movements (the latter may be related to the use of the abacus). But English speakers use language circuits. It is as if the West conceives numbers as just words, but the East imbues them with symbolic, spatial freight. (Insert cliche about Asian math geniuses.) "One would think that neural processes involving basic mathematical computations are universal," says Ambady, but they "seem to be culture-specific "
   Not to be the skunk at this party, but I think it’ s important to ask whether neuroscience reveals anything more than we already know from, say, anthropology. For instance, it’s well known that East Asian cultures prize the collective over the individual, and that Americans do the opposite. Does identifying brain correlates of those values offer any extra insight? After all, it’ s not as if anyone thought those values are the result of something in the liver.
   Ambady thinks cultural neuro-science does advance understanding. Take the me/mom finding, which, she argues, "attests to the strength of the overlap between self and people close to you in collectivistic cultures and the separation in individualistic cultures. It is important to push the analysis to the level of the brain." Especially when it shows how fundamental cultural differences are—so fundamental, perhaps, that "universal" notions such as human rights, democracy, and the like may be no such thing.
Which of the following is a significant breakthrough achieved by cultural neuroscience according to the passage?
选项 A、It proves that some values are deeply rooted in human liver.
B、It correlates cultural differences with different brain activities.
C、It suggests that some universal concepts are shared across cultures.
D、It disputes our usual understanding of fundamental cultural differences.
答案B
解析 细节题。由第三段及所举例子(中国人和说英语的人在算数时大脑的不同思维方式)可知，文化神经学的重大突破是它把文化差异与大脑活动联系起来。故选B。
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