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§@ªÌ: sici (¤C¤ë) ¬ÝªO: BudaXfile 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~~~ Have a nice day! -- Éà ·à¤l§q¯¸ ªO±¤¶²Ð: cbs.ntu.edu.tw ¡ó ¦ò±Ð¢æÀÉ®× - ¥@¬É·j©_, ¶¢½Í¹Ú¡B©_ÃÓ¡B¥~¬P¡B·sª¾ BudaXfile |
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