Von Neumann quantitatively compared the speed of brain neurons and the speed of vacuum tubes, boldly implying the two could be compared.

冯·诺依曼从数量上比较了大脑神经元和真空电子管的运算速度，大胆暗示两者可以类比。

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They actually seem to measure the speed with which the brain apprehends, integrates and evaluates information.

实际上两种反应时间所衡量的似乎是大脑对信息的理解、整合与评估的速度。

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This colorful brain image is like a map of mental speed.

这张彩色的人脑图显示了人脑各个区域的神经反应速度。

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And although imaging studies show that middle-aged people may use different brain regions to do the same old tasks, cognitive tests show that apart from brute speed, the brain's abilities are not diminished in middle age.

BBC: Viewpoint: Just what is middle age?

Researchers have found that less than an hour of cellphone use can cause brain activity to speed up in the area that is closest to the antenna.

FORBES: Can Cell Phones Really Alter The Way You Think?

This type of experiential, addictive learning improves decision-making skills and increases the processing speed and spatial skills of the brain.

FORBES: Rethinking Education: Why Our Education System Is Ripe For Disruption