Friedrich Claudia K, Lahiri Aditi, Eulitz Carsten
Department of Biological Psychology and Neuropsychology, University of Hamburg, Hamburg, Germany.
J Exp Psychol Hum Percept Perform. 2008 Dec;34(6):1545-59. doi: 10.1037/a0012481.
How does the mental lexicon cope with phonetic variants in recognition of spoken words? Using a lexical decision task with and without fragment priming, the authors compared the processing of German words and pseudowords that differed only in the place of articulation of the initial consonant (place). Across both experiments, event-related brain potentials indicated that pseudowords with initial noncoronal place (e.g., *Brachen) activate words with initial coronal place (e.g., Drachen [dragon]). In contrast, coronal pseudowords (e.g., *Drenze) do not as effectively activate noncoronal words (e.g., Grenze [border]). Thus, certain word onset variations do not hamper the speech recognition system. The authors interpret this asymmetry as a consequence of underspecified coronal place of articulation in the mental lexicon.
心理词库在识别口语单词时如何处理语音变体？作者使用了带有和不带有片段启动的词汇判断任务，比较了德语单词和假词的处理情况，这些单词和假词仅在初始辅音的发音位置（部位）上有所不同。在两个实验中，事件相关脑电位表明，初始发音部位为非冠状音的假词（例如Brachen）会激活初始发音部位为冠状音的单词（例如Drachen [龙]）。相比之下，冠状音假词（例如Drenze）不能像那样有效地激活非冠状音单词（例如Grenze [边界]）。因此，某些单词开头的变化不会妨碍语音识别系统。作者将这种不对称解释为心理词库中冠状音发音部位特征不明确的结果。
