Quandt Lorna C, Kubicek Emily
Ph.D. in Educational Neuroscience (PEN) Program, Gallaudet University, 800 Florida Ave NE, Washington, D.C. 20002, USA; Department of Psychology, Gallaudet University, 800 Florida Ave NE, Washington, D.C. 20002, USA.
Ph.D. in Educational Neuroscience (PEN) Program, Gallaudet University, 800 Florida Ave NE, Washington, D.C. 20002, USA.
Brain Lang. 2018 Dec;187:9-17. doi: 10.1016/j.bandl.2018.10.001. Epub 2018 Nov 3.
Bilingual individuals automatically translate written words from one language to another. While this process is established in spoken-language bilinguals, there is less known about its occurrence in deaf bilinguals who know signed and spoken languages. Since sign language uses motion and space to convey linguistic content, it is possible that action simulation in the brain's sensorimotor system plays a role in this process. We recorded EEG from deaf participants fluent in ASL as they read individual English words and found significant differences in alpha and beta EEG at central electrode sites during the reading of English words whose ASL translations use two hands, compared to English words whose ASL translations use one hand. Hearing non-signers did not show any differences between conditions. These results demonstrate the involvement of the sensorimotor system in cross-linguistic, cross-modal translation, and suggest that covert action simulation processes are involved when deaf signers read.
双语者会自动将书面文字从一种语言翻译成另一种语言。虽然这一过程在口语双语者中已得到证实，但对于既懂手语又懂口语的聋人双语者中这一过程的发生情况，我们了解得较少。由于手语利用动作和空间来传达语言内容，大脑感觉运动系统中的动作模拟可能在这一过程中发挥作用。我们记录了熟练掌握美国手语（ASL）的聋人参与者阅读单个英语单词时的脑电图（EEG），发现与ASL翻译用单手的英语单词相比，在阅读ASL翻译用双手的英语单词时，中央电极部位的α波和β波脑电图存在显著差异。听力正常的非手语使用者在不同条件下未表现出任何差异。这些结果证明了感觉运动系统参与了跨语言、跨模态的翻译，表明聋人手语使用者阅读时涉及隐蔽的动作模拟过程。
