Objective. Degradations of transmitted speech have been shown to affect perceptual and cognitive processing in human listeners, as indicated by the P3 component of the event-related brain potential (ERP). However, research suggests that previously observed P3 modulations might actually be traced back to earlier neural modulations in the time range of the P1-N1-P2 complex of the cortical auditory evoked potential (CAEP). This study investigates whether auditory sensory processing, as reflected by the P1-N1-P2 complex, is already systematically altered by speech quality degradations. Approach. Electrophysiological data from two studies were analyzed to examine effects of speech transmission quality (high-quality, noisy, bandpass-filtered) for spoken words on amplitude and latency parameters of individual P1, N1 and P2 components. Main results. In the resultant ERP waveforms, an initial P1-N1-P2 manifested at stimulus onset, while a second N1-P2 occurred withi...

中文翻译：

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语音传输质量对皮层听觉诱发电位指示的感觉处理的影响。

目的。事件相关脑电势（ERP）的P3成分表明，传输语音的退化会影响人类听众的知觉和认知能力。但是，研究表明，先前观察到的P3调制实际上可以追溯到皮层听觉诱发电位（CAEP）的P1-N1-P2复合物的时间范围内。这项研究调查了语音质量下降是否已经系统地改变了P1-N1-P2复合体所反映的听觉感觉处理。方法。分析了两项研究的电生理数据，以检验语音的语音传输质量（高质量，噪声，带通滤波）对单个P1，N1和P2分量的振幅和潜伏期参数的影响。主要结果。