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首页> 外文期刊>Biological Psychology >Electrophysiological indices of word fragment priming allow characterizing neural stages of speech recognition.
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Electrophysiological indices of word fragment priming allow characterizing neural stages of speech recognition.

机译：单词片段启动的电生理指标可以表征语音识别的神经阶段。

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摘要

Spoken word onset syllables (prime fragments) have been used to track neurophysiological processing of following written words (targets). Between 300 and 400 ms event-related potentials (ERPs) over the left hemisphere were more positive for targets that did not match their preceding prime fragments (e.g., hun-dragon) compared to matching targets (e.g., dra-dragon). This P350 effect has been related to the activation of modality independent neural word form representations. In the present experiment we set out to characterize neural word processing specific to the auditory domain. Spoken word onset syllables (prime fragments) were followed by spoken words (targets). Reduced amplitudes for matching targets were found for the N100 and the T-complex (100-300 ms), for the P350 (300-400 ms) and for a central negativity starting at 300 ms. The early potentials possibly index the priming of speech sound processing. The P350 replicates previous work with written words. This constitutes further evidence for shared neural word form representations in auditory and visual word recognition. The central negativity might be related to the rapid phonological matching of prime and target; or to the immediate testing of phonological expectations in speech recognition.
机译：口语单词发声音节（主要片段）已用于跟踪后续书面单词（目标）的神经生理过程。与匹配的目标（例如dra-dragon）相比，左半球300-400 ms之间的事件相关电位（ERP）对于与之前的原始片段（例如hun-dragon）不匹配的目标更为阳性。这种P350效应与模态无关的神经词形式表示的激活有关。在本实验中，我们着手表征特定于听觉域的神经文字处理。口语单词发声音节（主要片段）后跟口语单词（目标）。对于N100和T型复合物（100-300 ms），对于P350（300-400 ms）以及从300 ms开始的中央负电势，匹配目标的幅度减小了。早期的潜力可能索引语音处理的启动。 P350用文字复制以前的工作。这构成了在听觉和视觉单词识别中共享神经单词形式表示的进一步证据。中心否定性可能与素词和目标词的快速语音匹配有关。或立即测试语音识别中的语音期望。

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