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Masking effects on subjective annoyance to aircraft flyover noise: An fMRI study

机译:掩盖效应对飞机天桥噪声的主观烦恼:fMRI研究

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摘要

Sound masking, a new noise control technology, has been applied to improve subjective perception of noise in recent years. However, the neural mechanisms underlying this technology are still unclear. In this study, 18 healthy subjects were recurited to take subjective annoyance assessments and fMRI scanning with the aircraft noise and the masked aircraft noise. The results showed that the noise annoyance was associated with deficient functional connectivity between anterior cingulate cortex (ACC) and prefrontal cortex and exceeded brain activation in ACC, which might be explained as compensation. The sound masking led to significantly strong activation in the left medial frontal cortex and right medial orbital frontal cortex, which were associated with happy emotion induced by sound masking. This study offered new insights on the underlying neural mechanisms of sound masking effects.
机译:近年来,声音屏蔽是一种新的噪声控制技术,已被用于改善对噪声的主观感知。然而,这项技术的神经机制仍不清楚。在这项研究中,18名健康受试者被召回进行主观烦恼评估和功能磁共振成像扫描与飞机的噪音和掩盖的飞机噪音。结果表明,噪声烦恼与前扣带回皮质(ACC)和额叶前皮质之间的功能连通性不足有关,并且超出了ACC的大脑激活范围,这可以解释为补偿。声音掩蔽导致左内侧额叶皮层和右侧内侧眶额叶皮层显着强烈激活,这与通过掩蔽引起的快乐情绪有关。这项研究提供了对掩蔽效应的潜在神经机制的新见解。

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