The rough sound of salience enhances aversion through neural synchronisation
The rough sound of salience enhances aversion through neural synchronisation
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DOI：
10.1038/s41467-019-11626-7
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发表时间：
2019-08-14
影响因子：
16.6
通讯作者：
Megevand, Pierre
中科院分区：
文献类型：
--
作者：
Arnal, Luc H.;Kleinschmidt, Andreas;Megevand, Pierre
能够发出吸引注意力并引起快速反应的声音是沟通的主要目标。报警信号所采用的一种策略包括在粗糙度范围（30-150 Hz）内发出快速但可感知的幅度调制。在这里，我们调查的感知和神经机制的厌恶，这种时间上突出的声音。通过测量主观厌恶重复的声学瞬变，我们确定了一个非线性模式的厌恶限制粗糙度范围。使用人类颅内录音，我们表明，粗糙的声音不仅影响局部听觉过程，而是同步大规模的，超模态的，显着性相关的网络在一个稳定的状态，持续的方式。粗糙的声音会使整个上级颞区、皮层下和皮层边缘区以及额叶皮层的活动同步，额叶皮层是一个典型的参与厌恶处理的网络。这种模式与所有这些区域的主观厌恶相关，这与粗糙度通过神经同步的传播增强听觉厌恶的假设一致。
Being able to produce sounds that capture attention and elicit rapid reactions is the prime goal of communication. One strategy, exploited by alarm signals, consists in emitting fast but perceptible amplitude modulations in the roughness range (30-150 Hz). Here, we investigate the perceptual and neural mechanisms underlying aversion to such temporally salient sounds. By measuring subjective aversion to repetitive acoustic transients, we identify a nonlinear pattern of aversion restricted to the roughness range. Using human intracranial recordings, we show that rough sounds do not merely affect local auditory processes but instead synchronise large-scale, supramodal, salience-related networks in a steady-state, sustained manner. Rough sounds synchronise activity throughout superior temporal regions, subcortical and cortical limbic areas, and the frontal cortex, a network classically involved in aversion processing. This pattern correlates with subjective aversion in all these regions, consistent with the hypothesis that roughness enhances auditory aversion through spreading of neural synchronisation.