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  3. Scientists have spent 14 years scanning the brain of a yoga guru (大师). Their findings suggest daily meditation could help protec

Scientists have spent 14 years scanning the brain of a yoga guru (大师). Their findings suggest daily meditation could help protec

admin2023-01-30  3
问题     Scientists have spent 14 years scanning the brain of a yoga guru (大师). Their findings suggest daily meditation could help protect the brain from aging. According to a study published in the journal Neurocase, Mahinder, who is 41 years old, has a brain almost a decade younger than his actual age. The study’s authors suggest decades of regular meditation could explain the difference.
    Researchers scanned Mahinder’s brain four times over 14 years. The results were compared with scans from 105 adults aged 25 to 66, taken between 2010 and 2011, using artificial intelligence taught to estimate a person’s age based on the structure of their brain. While the brain age of the control group aligned closely to their calendar age, that of Mahinder did not. The AI system guessed his age was 33—eight years younger than his calendar age.
    The authors hypothesize Mahinder’s comparatively young brain age could be the result of decades of meditation. This is backed up by previous studies that suggest meditation could slow the wearing down of the shield-like structures that protect the tips of chromosomes (染色体) from deterioration, and the loss of gray matter, both of which contribute to aging.
    However, the study published in Neurocase is based on observations and correlations, and does not confirm a cause and effect. There may be several other factors (such as genetics) entirely unrelated to meditation that could be a factor here. To complicate the matter further, the study suggests the effect of meditation may not be as simple as slowing the aging process because Mahinder’s brain also appeared to age faster than the control group. The authors note limitations with their study and point out the framework of the experiment is not equipped to confirm whether or not there is a direct relationship between Mahinder’s brain age and meditation practice. Furthermore, Mahinder’s brain scans were compared to those of Americans, who are likely to have a very different lifestyle and come from a very different environment to that of a yoga guru.

What is the main function of the AI system in the study?
选项 A、To scan the structure of the yoga guru’s brain.
B、To compare the subjects’ brain images.
C、To judge people’s age from the structure of their brains.
D、To calculate the differences between the brain age and the calendar age.
答案C
解析 由题干中的AI system和题文同序原则定位到第二段第二句。推理判断题。定位段指出，研究人员在14年内对马辛德的大脑进行了4次扫描。而在2010年至2011年间，他们也对另外的105名成年人进行了大脑扫描。研究人员对这两组扫描结果进行了对比，而对比过程中涉及AI系统，也就是人工智能系统的参与。关键在于理解artificial intelligence taught to estimate a person’s age based on the structure of their brain这部分，taught是teach的过去分词，也就是说，人工智能被教会了通过测试者的大脑结构来对他们的年龄进行推测。由此可知，人工智能的主要功能是通过受测试者的大脑扫描结果来判断他们的年龄，故答案为C)。
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