The Frequency-Following Response
The Frequency-Following Response
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频率跟随响应
DOI：
10.1007/978-3-319-47944-6_4
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
Carcagno S
中科院分区：
文献类型：
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作者：
Carcagno S
频率跟随响应 (FFR) 是一种持续的听觉诱发电位，反映听觉脑干中神经元对声音波形周期性的锁相。研究表明，短期听觉训练可以提高这种锁相的鲁棒性和/或准确性。 FFR 可塑性已通过训练任务进行了研究，这些训练任务被认为涉及某种形式的听觉时间编码，包括基频辨别训练、识别普通话声调的训练以及识别噪声中语音的训练。这些研究的结果表明，训练任务的改进往往伴随着 FFR 可塑性。这表明皮层下听觉处理不是硬连线的，而是可以通过成年期的训练来改变。研究还表明，在可能存在皮质下听觉处理缺陷的特殊听众群体中，例如患有语言学习障碍的儿童、老年听众和感音神经性听力损失的听众，FFR 也会随着听觉认知训练方案而发生变化。这些研究的结果提供了有希望的证据，表明可以利用皮质下听觉可塑性来改善听觉处理缺陷。据推测，这种学习引起的皮质下可塑性可能是由传出皮质反馈引导的。然而，FFR 可塑性的机制仍不清楚。
The frequency-following response (FFR) is a sustained auditory-evoked potential that reflects the phase locking of neurons in the auditory brainstem to periodicities in the waveform of a sound. Studies have shown that short-term auditory training can improve the robustness and/or accuracy of this phase locking. FFR plasticity has been investigated using training tasks that are thought to involve some form of auditory temporal coding, including fundamental-frequency discrimination training, training to identify Mandarin lexical tones, and training to identify speech in noise. The results of these studies have shown that improvements in the trained task are often accompanied by FFR plasticity. This suggests that subcortical auditory processing is not hardwired but can be modified by training even in adulthood. The FFR has also been shown to change following auditory-cognitive training protocols in special populations of listeners who may have subcortical auditory processing deficits, such as children with language-based learning disabilities, elderly listeners, and listeners with sensorineural hearing loss. The results of these studies provide promising evidence that subcortical auditory plasticity could be harnessed to ameliorate auditory processing deficits. It has been hypothesized that this learning-induced subcortical plasticity may be guided by efferent cortical feedback; however, the mechanisms of FFR plasticity remain largely unclear.