Leybaert Jacqueline, D'Hondt Murielle
Université libre de Bruxelles, Bruxelles, Belgium.
Int J Audiol. 2003 Jul;42 Suppl 1:S34-40. doi: 10.3109/14992020309074622.
Recent investigations have indicated a relationship between the development of cerebral lateralization for processing language and the level of development of linguistic skills in hearing children. The research on cerebral lateralization for language processing in deaf persons is compatible with this view. We have argued that the absence of appropriate input during a critical time window creates a risk for deaf children that the initial bias for left-hemisphere specialization will be distorted or disappear. Two experiments were conducted to test this hypothesis The results of these investigations showed that children educated early and intensively with cued speech or with sign language display more evidence of left-hemisphere specialization for the processing of their native language than do those who have been exposed later and less intensively to those languages.
最近的研究表明，听力正常儿童在处理语言时大脑半球侧化的发展与语言技能的发展水平之间存在关联。关于聋人语言处理的大脑半球侧化研究与这一观点相符。我们认为，在关键的时间窗口内缺乏适当的输入会给聋儿带来风险，即左半球专门化的初始偏向会被扭曲或消失。进行了两项实验来检验这一假设。这些研究结果表明，与那些较晚且较少接触手语或提示语的儿童相比，早期接受强化提示语或手语教育的儿童在处理母语时表现出更多左半球专门化的证据。
