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风萧萧: 跑步锻炼促进增长脑细胞聪明快乐

(2018-02-01 05:09:22) 下一个

风萧萧 跑步锻炼促进增长脑细胞聪明快乐

   风萧萧 2012-06-27 22:29:43     2018年2月1日 更新

 下面是我的文章《人类生命是有情感地生存》的一段。

 大意是,英国人把老鼠分成两组:

 一组,锻炼。跑几天转轮,约15英里(24公里)/天。老鼠的小短腿,跑的真够快的。设想啊,以腿的长短来换算。假如,人腿是老鼠腿长的30倍,那么,24公里X30倍=720公里/天。谁受得了哇?  

 另一组,不锻炼。看热闹,偷偷笑。

 然后进行测验。

 他们在能够触摸操控的电脑屏幕上显示两个同样尺寸的方块儿。老鼠碰触左侧方块得到糖弹奖赏,右侧没有。开始时,获奖的量,运动组的老鼠是不运动的两倍。

 他们故意折腾老鼠,把方块距离逐渐移近,还调换给予奖赏方块儿的左右方向。锻炼组的老鼠都能很快找到规律,继续得到奖赏。没有锻炼的老鼠,傻了。最后,当两个方块之间的距离很小的时候,竟然得不到奖赏。

 看看,人们常说,吃小亏,占大便宜。傻人有傻福。老鼠群落亦然。傻鼠有傻福。笑在前的是傻笑。

 最终命运倒是一致。都被解剖了。

 结果发现,锻炼组的老鼠新增长了很多脑细胞。

 可见,脑细胞的多少,决定聪明与否。

 研究报告《加拿大18%华裔青少年曾萌死念》发现定期做运动的青少年,较很少做运动的青少年心理素质好,抗压力强。说明,脑细胞多,不但决定聪明与否,还决定快乐与否。

 而体育锻炼就能增加脑细胞。

 体育锻炼能治疗抑郁,增加快乐感,不再想自杀。

 体育锻炼能提高智力水平,孩子的学习效率高,爱学习,成绩好。成绩好,自然有个好前程,孩子的好前程,是各国父母所求。

 与孩子一起锻炼吧,又不花钱,多好。这是当今的世界上,唯一件公平合理、人人平等、又只好不坏的事儿?

3.5. Running jogs memory by creating new brain cells

 Start running and watch your brain grow, say scientists 

 Britain 2010: Two groups of mice, one which had unlimited access to a running wheel in average of 15 miles (24 km) a day while the other did not. After a few days left alone, they put both groups of mice through a series of memory tests on a computer screen.

The screen displayed two identical squares side by side, and if they nudged the one on the left with their nose they received a sugar pellet reward, while the one on the right yielded nothing. The mice that had been running were almost twice as successful as those in the control group at picking the correct square. 

At the start of the test, the squares were 30 cm apart, but got closer and closer until they were almost touching. The big difference was seen in this stage. The sedentary mice got steadily worse. The scientists also tried to wrong-foot the mice by switching the square that produced a food reward but the running mice were quicker to catch on when scientists changed them around.

Tissue samples taken from the dentate gyrus part of the rodents’ brain, one of the few regions that can grow new cells on corresponding area of human adult brain, revealed that the running mice had grown fresh grey matter during the experiment. On average 6,000 new brain cells had been created.

Back The report also mentioned: “The Cambridge researchers joined forces with colleagues at the U.S. National Institute on Ageing in Maryland to investigate the effect of running. A few days of running led to the growth of hundreds of thousands of new brain cells that improved the ability to recall memories without confusing them, a skill that is crucial for learning and other cognitive tasks, researchers said.”

 

研究揭秘婴儿健忘症:新脑细胞覆盖老细胞

信源:新浪科技|编辑:2014-05-13

对于大多数人来说,通常很难记得婴幼儿时期的事情,尤其是三岁以前的事。婴儿健忘症现象长期以来令人们迷惑不解,也引起了科学家们的关注和研究兴趣。近日,加拿大多伦多病童医院神经生物学实验室科学家声称已揭开其中的奥秘。科学家们的最新研究成果显示,人类随着年龄的增长,新脑细胞的生长会有效地覆盖已有细胞,因而抹去了早期的记忆。

研究显示,随着年龄的增长,新的大脑细胞的形成会覆盖已有细胞,抹除早期记忆。

研究表明,当新的神经元融入海马体时,它们也影响现有的记忆。

该项研究负责人、加拿大多伦多病童医院神经生物学实验室科学家凯瑟琳-阿科尔斯解释说,“婴儿健忘症是指我们对婴幼儿时期发生的事没有记忆,大多数人对两三岁时发生的事几乎没有印象。这并不是说我们在那个时期没有记忆能力。举个例子,我的女儿在三岁时能够详细地叙述去动物园、去奶奶家的路线。但是,到了五岁时,已经记不起这些了。也就是说,这些记忆很快忘记掉了。”

由于海马体对于记忆很重要,因此科学家们一直致力于研究新的神经元在新的记忆中所起的作用。最新研究认为,当新的神经元融入海马体时,它们也影响现有的记忆。特别指出的是,当新的神经元融入时,它们肯定会重塑海马体回路,这种重塑也可能导致现有回路中存储记忆的减弱。

阿科尔斯通过人工提升成年实验鼠神经元水平的研究来验证这一想法。“我们推测海马体神经元的水平会影响稳定的记忆存储。婴幼儿时期实验鼠能够存储记忆,但神经元数量的增加会覆盖这些信息,因此会忘记。在我们的研究论文中,我们列举了大量证据证明这一说法,即婴幼儿时期实验鼠,如果神经元减少,相应地会导致记忆的增加。相反,则会导致忘记。”

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