研究人員發(fā)現(xiàn),，先天盲目的兒童在重獲視力之初,，并不能視覺(jué)化他們以前曾觸摸過(guò)的物品,，新成果發(fā)表在日前在線出版的《自然—神經(jīng)科學(xué)》期刊上。這一結(jié)果在某種意義上說(shuō)明,，看的能力是通過(guò)學(xué)習(xí)獲得的：人們學(xué)會(huì)了將所看見(jiàn)和所感覺(jué)的物體對(duì)應(yīng)起來(lái),，這種能力并非與生俱來(lái)。
普拉卡什（Project Prakash）項(xiàng)目是在一項(xiàng)在印度實(shí)施的治療可治愈失明的人道主義和科學(xué)事業(yè),。Richard Held和同事合作,，對(duì)一群8~17歲接受普拉卡什項(xiàng)目治療的患者進(jìn)行研究。所有的受試者均是因先天性白內(nèi)障或角膜混濁而在出生時(shí)就失明了,，這種情況的失明可通過(guò)白內(nèi)障切除或角膜移植而得以治愈,。受試者被要求感覺(jué)一塊建筑用磚塊，然后再被要求將這種磚與他們?cè)?jīng)接觸過(guò)的兩種磚塊進(jìn)行比較,。盡管對(duì)絕大多數(shù)人而言這是一件很容易的事,，但是，這些患者卻無(wú)法正確將他們所看見(jiàn)的磚塊與以前曾觸摸過(guò)的磚塊正確配對(duì),。然而,，當(dāng)部分接受測(cè)試的孩子接受了為期5天的短期訓(xùn)練后，他們的表現(xiàn)有實(shí)質(zhì)性提高,。（生物谷Bioon.com）
生物谷推薦原文出處：
Nature Neuroscience DOI:10.1038/nn.2795
The newly sighted fail to match seen with felt
Richard Held; Yuri Ostrovsky; Beatrice de Gelder; Tapan Gandhi; Suma Ganesh; Umang Mathur; Pawan Sinha
Would a blind subject, on regaining sight, be able to immediately visually recognize an object previously known only by touch? We addressed this question, first formulated by Molyneux three centuries ago, by working with treatable, congenitally blind individuals. We tested their ability to visually match an object to a haptically sensed sample after sight restoration. We found a lack of immediate transfer, but such cross-modal mappings developed rapidly.
