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首页> 外文期刊>The Open Neurology Journal >Effects of Consonant-Vowel Transitions in Speech Stimuli on Cortical Auditory Evoked Potentials in Adults
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Effects of Consonant-Vowel Transitions in Speech Stimuli on Cortical Auditory Evoked Potentials in Adults

机译：言语刺激中辅音-变音过渡对成人皮质听觉诱发电位的影响

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摘要

We examined the neural activation to consonant-vowel transitions by cortical auditory evoked potentials (AEPs). The aim was to show whether cortical response patterns to speech stimuli contain components due to one of the temporal features, the voice-onset time (VOT). In seven normal-hearing adults, the cortical responses to four different monosyllabic words were opposed to the cortical responses to noise stimuli with the same temporal envelope as the speech stimuli. Significant hemispheric asymmetries were found for speech but not in noise evoked potentials. The difference signals between the AEPs to speech and corresponding noise stimuli revealed a significant negative component, which correlated with the VOT. The hemispheric asymmetries can be referred to rapid spectral changes. The correlation with the VOT indicates that the significant component in the difference signal reflects the perception of the acoustic change within the consonant-vowel transition. Thus, at the level of automatic processing, the characteristics of speech evoked potentials appear to be determined primarily by temporal aspects of the eliciting stimuli.
机译：我们检查了皮层听觉诱发电位（AEPs）的神经激活到辅音元音过渡。目的是显示皮质对语音刺激的反应模式是否包含由于时间特征之一，即声音开始时间（VOT）而产生的成分。在七个正常听力的成年人中，皮层对四个不同的单音节单词的反应与皮层对噪声刺激的反应（具有与语音刺激相同的时间包络）相反。发现语音存在明显的半球不对称性，但在噪声诱发电位中则没有。语音的AEP和相应的噪声刺激之间的差异信号显示出明显的负分量，与VOT相关。半球不对称性可以称为快速光谱变化。与VOT的相关性表明，差异信号中的重要分量反映了辅音元音过渡内的声学变化感知。因此，在自动处理的水平上，语音诱发电位的特性似乎主要由引起刺激的时间方面决定。

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