Predictability affects early perceptual processing of word onsets in continuous speech.

Predictability affects early perceptual processing of word onsets in continuous speech.
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可预测性会影响连续言语中单词打击的早期感知处理。

DOI:
10.1016/j.neuropsychologia.2011.08.014
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发表时间:
2011-10
期刊:
影响因子:
2.6
通讯作者:
Sanders LD
Sanders LD
中科院分区:
心理学3区
文献类型:
--
作者:
Astheimer LB;Sanders LD

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事件相关电位(Event-Related Potential,ERP)研究表明,听者在连续言语中会选择性地注意到词头,但这种优先加工的原因尚不清楚。目前的研究测量了人工语言中音节首音诱发的事件相关电位,以检验这样一种假设,即听者将注意力引导到单词首音是因为它们的身份是不可预测的。在识别训练之前和之后,参与者都连续听了六个无意义的单词,成对排列,这样每对单词中的第二个单词是完全可以预测的。训练后,成对的第一个单词在开始后大约100毫秒左右引发了更大的负面影响。对于完全可预测的成对第二个词,这一效应并不明显。这些结果表明,听者最有可能注意到他们最不能预测的语音片段。
Event-related potential (ERP) evidence indicates that listeners selectively attend to word onsets in continuous speech, but the reason for this preferential processing is unknown. The current study measured ERPs elicited by syllable onsets in an artificial language to test the hypothesis that listeners direct attention to word onsets because their identity is unpredictable. Both before and after recognition training, participants listened to a continuous stream of six nonsense words arranged in pairs, such that the second word in each pair was completely predictable. After training, first words in pairs elicited a larger negativity beginning around 100 ms after onset. This effect was not evident for the completely predictable second words in pairs. These results suggest that listeners are most likely to attend to the segments in speech that they are least able to predict.
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