学习问题、发育迟缓与青春期。
Learning problems, delayed development, and puberty.
作者信息
Wright Beverly A, Zecker Steven G
机构信息
Department of Communication Sciences and Disorders, and Institute for Neuroscience, 2240 Campus Drive, Northwestern University, Evanston, IL 60208-3550, USA.
出版信息
Proc Natl Acad Sci U S A. 2004 Jun 29;101(26):9942-6. doi: 10.1073/pnas.0401825101. Epub 2004 Jun 21.
Abstract
Language-based learning disorders such as dyslexia affect millions of people, but there is little agreement as to their cause. New evidence from behavioral measures of the ability to hear tones in the presence of background noise indicates that the brains of affected individuals develop more slowly than those of their unaffected counterparts. In addition, it seems that brain changes occurring at approximately 10 years of age, presumably associated with puberty, may prematurely halt this slower-than-normal development when improvements would normally continue into adolescence. The combination of these ideas can account for a wide range of previous results, suggesting that delayed brain development, and its interaction with puberty, may be key factors contributing to learning problems.
摘要
像诵读困难这样基于语言的学习障碍影响着数百万人，但对于其成因却几乎没有共识。来自在背景噪音环境下听音调能力的行为测量的新证据表明，受影响个体的大脑发育比未受影响的同龄人更缓慢。此外，似乎大约在10岁时发生的大脑变化，大概与青春期有关，当正常情况下发育会持续到青春期时，这些变化可能会过早地停止这种比正常情况更缓慢的发育。这些观点的结合可以解释此前一系列的结果，这表明大脑发育延迟及其与青春期的相互作用，可能是导致学习问题的关键因素。
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