Department of Education Studies, Hong Kong Baptist University, Hong Kong; Centre for Learning Sciences, Hong Kong Baptist University, Hong Kong.
Department of Education Studies, Hong Kong Baptist University, Hong Kong; Centre for Learning Sciences, Hong Kong Baptist University, Hong Kong.
Neuropsychologia. 2020 Oct;147:107578. doi: 10.1016/j.neuropsychologia.2020.107578. Epub 2020 Aug 1.
This study used event-related potential (ERP) recording to examine the role of lexical tone and rime in Mandarin Chinese spoken sentence comprehension. A violation paradigm was adopted, such that selected target syllables in the sentences were replaced with tone-violated, rime-violated, or double-violated syllables. Participants judged whether each sentence was congruent. The behavioral results confirmed previous findings: Tone violation was more difficult to detect than rime violation. The ERP results showed that rime and double violations, but not tone violation, elicited a larger N400 than the original condition. Similarly, tone and rime violations elicited a larger P600 than the original condition, and the effect started and ended 50 ms earlier in the tone-violation type. Interestingly, the double-violation type differed significantly from the original type only in the posterior electrodes, suggesting a weaker P600 effect than the tone- and rime-violation types. The differences in ERP effects between rime and tone processing indicate that rime played a more important role in semantic access, while tone played a more important role in error recovery. A model of Chinese speech perception was proposed to accommodate the different roles of lexical tone and rime at different processing stages during sentence comprehension.
本研究使用事件相关电位（ERP）记录来考察汉语普通话口语句子理解中词汇声调与韵母的作用。采用违反范式，即句子中的特定目标音节被替换为声调违反、韵母违反或双重违反的音节。参与者判断每个句子是否一致。行为结果证实了先前的发现：声调违反比韵母违反更难察觉。ERP 结果表明，韵母和双重违反比原始条件诱发了更大的 N400，而不是声调违反。同样，声调与韵母违反比原始条件诱发了更大的 P600，并且在声调违反类型中，该效应在 50 毫秒更早开始和结束。有趣的是，双违反类型仅在后电极上与原始类型显著不同，表明与声调违反和韵母违反类型相比，双违反类型的 P600 效应较弱。韵母与声调处理之间的 ERP 效应差异表明，韵母在语义获取中起着更重要的作用，而声调在错误恢复中起着更重要的作用。提出了一个汉语语音感知模型来适应句子理解过程中不同处理阶段词汇声调与韵母的不同作用。
