Perceptual representations of phonotactically illegal syllables.

Perceptual representations of phonotactically illegal syllables.
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DOI:
10.3758/s13414-012-0376-y
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发表时间:
2013-01
期刊:
Attention, perception & psychophysics
影响因子:
--
通讯作者:
Sanders LD
Sanders LD
中科院分区:
其他
文献类型:
--
作者:
Breen M;Kingston J;Sanders LD

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听者经常将语音上非法的音节(如英语中的/dla/)归类为语音上相似的合法音节(如/gla/)。在对这一效应的早期研究中,他没有观察到对不正常、非法音节的不匹配否定反应,因此认为语音策略限制了早期的知觉加工。在本研究中,我们使用启动范式,比较了合法目标(/gla/)触发的事件相关电位,以及(1)不同的身份启动符号(/gla/)、(2)音素不同的对照启动符号(/kla/)和(3)音素上不合法的启动符号(/dla/)。在启动后200 ~ 350 ms,非法启动比身份启动更能激发目标的正性。之后的波形部分(350-600毫秒)对于在身份和非法素数之前的目标没有区别,并且对应于相似性评级。这些数据支持一种语音感知模型,其中音素簇在感知的早期阶段被忠实地表示,只有在后期才根据语言特定的语音定向限制进行分类。
Listeners often categorize phonotactically illegal syllables (e.g., /dla/ in English) as phonemically similar legal ones (e.g., /gla/). In an earlier investigation of this effect, did not observe a mismatch-negativity in response to deviant, illegal syllables, and therefore argued that phonotactics constrain early perceptual processing. In the current study, using a priming paradigm, we compared event-related potentials elicited by legal targets (/gla/) preceded by (1) different tokens of identity primes (/gla/), (2) phonemically distinct control primes (/kla/), and (3) phonotactically illegal primes (/dla/). Targets elicited a larger positivity 200–350 ms after onset when preceded by illegal primes compared to identity primes. Later portions of the waveforms (350–600 ms) did not differ for targets preceded by identity and illegal primes, and corresponded to similarity ratings. These data support a model of speech perception in which phoneme clusters are faithfully represented at early stages of perception and only later are categorized according to language-specific phonotactic constraints.
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