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首页> 外文期刊>The European Journal of Neuroscience >Early selectivity for vocal and musical sounds: electrophysiological evidence from an adaptation paradigm
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Early selectivity for vocal and musical sounds: electrophysiological evidence from an adaptation paradigm

机译：对声音和音乐的早期选择性：来自适应范例的电生理证据

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摘要

There is growing interest in characterizing the neural basis of music perception and, in particular, assessing how similar, or not, it is to that of speech. To further explore this question, we employed an EEG adaptation paradigm in which we compared responses to short sounds belonging to the same category, either speech (pseudo-sentences) or music (piano or violin), depending on whether they were immediately preceded by a same- or different-category sound. We observed a larger reduction in the N100 component magnitude in response to musical sounds when they were preceded by music (either the same or different instrument) than by speech. In contrast, the N100 amplitude was not affected by the preceding stimulus category in the case of speech. For P200 component, we observed a diminution of amplitude when speech sounds were preceded speech, compared to music. No such decrease was found when we compared the responses to music sounds. These differences in the processing of speech and music are consistent with the proposal that some degree of category selectivity for these two classes of complex stimuli already occurs at early stages of auditory processing, possibly subserved by partly separated neuronal populations.
机译：人们越来越有兴趣描述音乐感知的神经基础，尤其是评估它与语音的相似性。为了进一步探讨这个问题，我们采用了一种EEG适应范式，在该范式中，我们比较了对属于同一类别的短音（语音（伪句子）或音乐（钢琴或小提琴））的响应，具体取决于它们是紧随其后的相同或不同类别的声音。我们观察到，在音乐（相同或不同的乐器）之前，音乐声音对N100分量幅度的响应要比对语音的响应更大。相反，在语音的情况下，N100幅度不受先前刺激类别的影响。对于P200组件，与音乐相比，当语音先于语音时，我们观察到振幅减小。当我们比较音乐声音的响应时，没有发现这种下降。语音和音乐处理中的这些差异与以下提议相符：在听觉处理的早期阶段，已经对这两种复杂刺激的类别产生了一定程度的类别选择性，这可能是由部分分离的神经元群体所服务。

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