This told us that the new neurons were not born by division of existing neurons, but were born elsewhere in the brain and went through a migratory stage during which they were not recognized as neurons.

这表明新的神经细胞不是通过已有的细胞的分裂产生的，而是在大脑的其他地 方产生，然后迁徙过来的，而在迁徙过程中，它们并没有表现出是神经细胞。

© Project Syndicate 1995 – 2011

http://www.project-syndicate.org/ 23.02.2009

© Project Syndicate 1995 – 2011

http://www.project-syndicate.org/ 23.02.2009

Greene found that people asked to make a moral judgment about “personal” violations, like pushing the stranger off the footbridge, showed increased activity in areas of the brain associated with the emotions.

格林发现当人们被要求对有关“个人化”侵犯（如将那个陌生人推下天桥）的情况做出道德判断时，他们的脑部与情感相关的区域活动增加。

© Project Syndicate 1995 – 2011

http://www.project-syndicate.org/ 29.10.2010

© Project Syndicate 1995 – 2011

http://www.project-syndicate.org/ 29.10.2010

As far as known, only a small fraction of all brain cells fall into the replaceable class; when other kinds of neurons die, they are not replaced.

就目前所知的情况，在所有脑细胞中，只有很小一部分是可以被替代的；而其他神经细胞死去的时候，它们并不会被替代。

© Project Syndicate 1995 – 2011

http://www.project-syndicate.org/ 23.02.2009

© Project Syndicate 1995 – 2011

http://www.project-syndicate.org/ 23.02.2009