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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  12
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.

Why can’t the study published in Neurocase provide solid proof on the relationship between meditation and the aging of the brain?
选项 A、It hasn’t ruled out the genetic influence in the aging process of the brain.
B、There is only one case of Mahinder that can give supportive evidence.
C、The scanning of the 105 adults was taken within only one year.
D、The observation of Mahinder’s lifestyle is not continuous.
答案A
解析 由题干中的the study published in Neurocase定位到第四段。推理判断题。定位段一开头指出，发表在《神经病例》杂志上的研究是无法确定冥想与大脑老化之间的因果关系的。这主要有两个原因：一是因为研究的方式仅仅是观察和关联性推断，二是因为很多其他因素都处在不可控状态，也没有被考虑进去，而基因就是因素之一。因此，答案为A)。
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