大脑中那些神经的连接构成亿万世界_BEC初级作文

大脑中那些神经的连接构成亿万世界

该团队对949名健康的年轻人进行了脑成像扫描，其中包括521名女性和428名男性，他们的年龄从8到22岁不等。同扎哈沙德的团队一样，维尔马也采用了一种名为“弥散张量成像(Diffusion Tensor Imaging)”的技术来追踪水分子是如何同脑白质神经纤维相应移动的，这形成了该想法的理论框架。这一研究于本月早些时候发表在《美国国家科学院院刊》(Proceedings of the National Academy of Sciences)上。

The neural patterns emerged only when combining results from hundreds of people, experts said. In any one person, gender patterns may be subsumed by the individual variations in brain shape and structure that help make every person unique.

专家们称，只有将来自成百上千人的结果归纳结合起来看时，才会出现上述的神经模式。在任何某一个人身上，性别模式可能会被归为大脑结构和形态方面的个体差异，这些个体差异会使每个人都显得独一无二。

Dr. Verma's maps of neural circuitry document the brain at moments when it is in a fury of creation. Starting in infancy, the brain normally produces neurons at a rate of half a million a minute, and reaches out to make connections two million times a second. By age 5, brain size on average has grown to about 90% of adult size. By age 20, the average brain is packed with about 109,000 miles of white matter tissue fibers, according to a 2003 Danish study reported in the Journal of Comparative Neurology.