Neurolinguistic correlates in processing phonological stem-variants of complex words

语音识别中的一个核心问题是对比音素信息如何存储在心理词典中。使用不匹配的负性，一个组件的事件相关的大脑活动，这是敏感的语言特定的音素表示，我们已经表明，人类的大脑是指抽象的未指定的表示，而不是所有的音素特征存储。这已被证明是冠状位的发音元音所预测的特征欠指定的词汇模型（FUL）。本实验将在前人研究的基础上，（i）将我们对孤立元音的观察扩展到具有辅音起始和结尾的复杂音系语境中;（ii）研究词汇状态和音系音段水平上的不匹配负性的影响;以及（iii）进一步确定与发音方式相关的其他语音特征（如刺耳）的欠指定的神经生物学证据，鼻音和浊音，通常用于对比自然语言中的语音。

A central issue in speech recognition is how contrastive phonemic Information is stored in the mental lexicon. Using the mismatch negativity, a component of the event-related brain activity which is sensitive to language-specific phoneme representations, we have shown that the human brain refers to abstract underspecified representations where not all phonemic features are stored. This has been shown for the coronal place of articulation in vowels as predicted by the Featurally Underspecified Lexicon-model (FUL). The planned experiments will build an our previous research to (i) extend our observations for vowels in isolation to those in more complex phonological contexts with consonantal onsets and codas; (ii) study the effect of lexical status an the mismatch negativity when investigating the segmental level of phonology; and (iii) ascertain further neurobiological evidence for the underspecification of other phonological features related to the manner of articulation like stridency, nasality and voicing, which are regularly used to contrast speech sounds in natural language.