Recent evidence shows that listeners use abstract prelexical units in speech perception. Using the phenomenon of lexical retuning in speech processing, we ask whether those units are necessarily phonemic. Dutch listeners were exposed to a Dutch speaker producing ambiguous phones between the Dutch syllable-final allophones approximant [r] and dark [l]. These ambiguous phones replaced either final /r/ or final /l/ in words in a lexical-decision task. This differential exposure affected perception of ambiguous stimuli on the same allophone continuum in a subsequent phonetic-categorization test: Listeners exposed to ambiguous phones in /r/-final words were more likely to perceive test stimuli as /r/ than listeners with exposure in /l/-final words. This effect was not found for test stimuli on continua using other allophones of /r/ and /l/. These results confirm that listeners use phonological abstraction in speech perception. They also show that context-sensitive allophones can play a role in this process, and hence that context-insensitive phonemes are not necessary. We suggest there may be no one unit of perception
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机译:最近的证据表明,听众言语感知使用抽象prelexical单位。使用语音处理词汇重新调谐的现象,我们要求这些单位是否一定音素。荷兰听众暴露于制造荷兰音节最终异音素之间暧昧电话荷兰扬声器近似值[r]和暗[1]。这些暧昧的电话在词汇决策任务或者替换最后/ R /或最终/ L /文字。该差分曝光影响在相同的异音素连续不明刺激的感知在随后的音标分类试验:/ R暴露于不明确的电话监听器/ -Final话更可能察觉到测试激励为/ R /比在曝光听众/升/ -Final字。使用的/ R /和/升其他异音素/该效果未找到测试激励上连续统。这些结果证实了听众的言语感知使用语音抽象。结果还显示,上下文相关的音位变体可以在这一过程中发挥作用,因此,这种情况下不敏感的音素是没有必要的。我们认为有可能是感知没有一家单位
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