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¼ÐÃD: Re: ¤»®Ú¤¬¥Îªº¥t¥~¨Ò¤l
®É¶¡: Sun Jan  5 19:32:55 2003

¡° ¤Þ­z¡mDavidChiou (ªô¤j­è)¡n¤§»Ê¨¥¡G
>     ³oùئ³³ø¾É¥t¥~ªº¹êÅç¡G¬ì¾Ç®aµo²{¸£¤¤­t³d¡u¬Ý¡vªº²Ó­M¡A
> ©Î³\¤]¥i¥H­t³d¡uÅ¥¡v¡C¦b°Êª«¹êÅç¤W¤w¦³µ²ªG¡C
> http://web.mit.edu/msur/www/nytimes.html
> NY Times April 25, 2000
> 'Rewired' Ferrets Overturn Theories of Brain Growth
> By SANDRA BLAKESLEE
> "Some scientists are going to have a hard time believing these experiments," sa
> id Dr. Jon Kaas, a professor of psychology at Vanderbilt University in Nashvill
> e. They demonstrate, Dr. Kaas said, "that the cortex can develop in all sorts o
> f directions."


       ¯uªº«Ü¯S§O"that the cortex can develop in all sorts of directions"

> "If you wanted to create a dream experiment, this would be it," said Dr. Michae
> l Merzenich, a neuroscientist at the University of California at San Francisco
> and a leading authority on the brain's ability to change and reorganize, a proc
> ess known as plasticity. "It's about the most compelling demonstration you coul
> d have that experience shapes the brain."


        ¬ì¾Ç®a»¡±o¤Q¤À¤¤ªÖ~~

> But in recent years, scientists are also discovering that adult brains, as well
> , can undergo surprising changes in response to experience. For example, imagin
> g experiments carried out on blind people show that when they learn to read Bra
> ille, "visual" areas of their brains light up.

         ª¼¤HªºµøÄ±°Ï·|µo¥ú¡C......

> Touch seems to be residing in visual areas. Similar experiments on deaf people
> show that they use the auditory cortex to read sign language, whereas people wh
> o can hear use the visual areas of the brain for this purpose.
> Dr. Sur said his laboratory was now searching for molecules that help produce t
> hese kinds of changes in mature and developing brains.
> If the chemistry of regrowth and reorganization can be understood, he said, it
> would offer new avenues for helping people recover from damage caused by stroke
> s, accidents and various brain diseases.


         ªº½T¡A±N·|¬Oª¼¤Hªº¤@¤jºÖ­µ~~~

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