时差N小时:毒品与学习(下) Drugs and learning new information

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https://online2.tingclass.net/lesson/shi0529/0009/9697/439.mp3

https://image.tingclass.net/statics/js/2012

答案当然是“No”。

Evidence indicates that prior use of some drugsimpairs the brain's ability to forge new connectionsbetween neurons in response to new experiences.

科学证据表明在接触新事物之前服用某些药物会破坏大脑因新事物刺激神经元之间建立连接的能力。

Scientists took a bunch of rats and gave some ofthem either amphetamine or cocaine for twentydays, while giving the others a saline solution fortwenty days.

科学家们用大量的老鼠来进行试验。他们将老鼠分成两组，第一组老鼠喂食20天的安非他命或是可卡因，第二组老鼠喂食20天的盐水。

When the twenty days were up, half of the rats were moved from ordinary laboratory cages tofancy new cages equipped with all kinds of bridges, ramps, tunnels, and other toys.

20天过后，他们将一半的老鼠从普通的实验笼子转移到配备有桥梁，坡道，有隧道以及其他玩具的“超豪华”的新笼子里。After three and half months thescientists examined all of the rats brains.

三个半月后，科学家们对老鼠的大脑进行了仔细的研究。

They discovered that the saline solution rats that were moved to the new cages had a greaternumber of neuronal connections than all the other rats, including the drugged rats in the newcages.

他们发现，搬入新环境的喂食盐水的老鼠比其他的老鼠建立了更多的神经元连接。

These findings may aid in explaining some of the behavioral and cognitiveimpairments viewedin people who are addicted to drugs.

这些研究发现可能有助于解释为什么那些吸毒成瘾的人会有一定的行为和认知障碍。