The scalp-recorded brainstem response to speech: neural origins and plasticity.

The scalp-recorded brainstem response to speech: neural origins and plasticity.
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DOI:
10.1111/j.1469-8986.2009.00928.x
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发表时间:
2010-03-01
期刊:
影响因子:
3.7
通讯作者:
Kraus N
Kraus N
中科院分区:
心理学3区
文献类型:
--
作者:
Chandrasekaran B;Kraus N

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我们对人类听觉脑干代表语音信号的关键声学特征的惊人保真度的理解已经取得了相当大的进展。脑干对言语的反应可以通过检测头皮记录的诱发电位来无创地评估。在形态上,可以区分头皮记录的脑干反应的两个主要组成部分,瞬时起始反应和持续频率跟随反应(FFR)。结合起来,这两个组成部分能够传达典型语音音节中固有的重要分段和超分段信息。在这里,我们研究了头皮记录的脑干反应的可能的神经来源,并回顾了最近的证据,证明脑干对言语的反应本质上是动态的,并且可以通过经验来延展。最后,我们在脑干水平上提出了经验依赖可塑性的假设机制。
Considerable progress has been made in our understanding of the remarkable fidelity with which the human auditory brainstem represents key acoustic features of the speech signal. The brainstem response to speech can be assessed noninvasively by examining scalp-recorded evoked potentials. Morphologically, two main components of the scalp-recorded brainstem response can be differentiated, a transient onset response and a sustained frequency-following response (FFR). Together, these two components are capable of conveying important segmental and suprasegmental information inherent in the typical speech syllable. Here we examine the putative neural sources of the scalp-recorded brainstem response and review recent evidence that demonstrates that the brainstem response to speech is dynamic in nature and malleable by experience. Finally, we propose a putative mechanism for experience-dependent plasticity at the level of the brainstem.
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