There are declines in processing speed and in neurotransmitters, the chemicals in our brain.

人到中年，脑袋的加工处理信息的速度下降，大脑的神经传递素也逐渐衰弱，大脑的一些化学物质也开始走下坡路。

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Some researchers conclude that differences in intelligence result from differences in the speed and effectiveness of information processing by the brain.

一些研究人员由此得出结论：不同的智能导致大脑在处理信息时的反应速度和效率不同。

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By increasing "pore" activity with the over-expressed NR2B gene, the scientists effectively increased processing speed of the rat's brain.

科学家们通过增加小孔的活动，有效的提高了老鼠大脑的运转速度。

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

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Especially confusing, says Gazzaley, is that key brain functions, like short-term memory, processing speed, and the capacity to multi-task, decline steadily as we age.

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