Weber-Fox Christine, Davis Laura J, Cuadrado Elizabeth
Purdue University, Audiology and Speech Sciences, Heavilon Hall-B1353, West Lafayette, IN 47907-1353, USA.
Brain Lang. 2003 May;85(2):231-44. doi: 10.1016/s0093-934x(02)00587-4.
The central issue addressed is whether there are electrophysiological markers for high-language proficiency in adults. Event-related brain potentials (ERPs) were recorded in 19 young adults who demonstrated either "normal" or "high" language proficiency. ERPs were obtained during a sentence-processing task and analyzed for specific response components elicited by different word types. The ERPs in the normal and high-language proficiency groups were similar for early sensory related processing but differed in the later components thought to be more closely related to lexical access and post-lexical processing. The findings for the ERP waveforms suggest that adults with high-language proficiency show slightly faster lexical access over left anterior brain regions for closed class items, and a reduced reliance on contextual information contained in sentences.
所探讨的核心问题是，是否存在成人高语言能力的电生理标记物。对19名表现出“正常”或“高”语言能力的年轻成年人记录了事件相关脑电位（ERP）。在句子处理任务中获取ERP，并分析由不同单词类型引发的特定反应成分。正常语言能力组和高语言能力组的ERP在早期感觉相关处理方面相似，但在后期成分上有所不同，后期成分被认为与词汇通达和词汇后处理更密切相关。ERP波形的研究结果表明，高语言能力的成年人在左前脑区域对封闭类项目的词汇通达略快，并且对句子中包含的上下文信息的依赖减少。
