韵律语境对 P1 成分的影响

IF 1.1 Q3 OTORHINOLARYNGOLOGY
Journal of Audiology and Otology Pub Date : 2024-07-01 Epub Date: 2024-04-30 DOI:10.7874/jao.2023.00262
Kyung Myun Lee, Soojin Kang, Sung Hwa Hong, Il Joon Moon
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引用次数: 0

摘要

背景和目的:......:声音的时间结构以规律模式为特征,在优化听觉信息处理方面发挥着至关重要的作用。节拍代表了音乐中间隔均匀、组织良好的节拍序列,呈现出层次性排列,较强的节拍占据较高的节拍位置。此外,节拍已被证明会影响行为和神经处理,尤其是 N1、P2 和错配负性成分。然而,P1成分在节拍层次结构中的作用仍未得到探讨。本研究旨在探究节拍层次对 P1 成分的影响,并比较音乐家和非音乐家的反应:30 名参与者(15 名音乐家和 15 名非音乐家)参加了研究。听觉刺激包括一个合成语音音节和一系列重复的四个音调,形成一个四重音阶。电生理记录用于测量 P1 分量:结果显示,节拍位置对 P1 振幅有显著影响,最强的节拍显示出最低的振幅。这与之前的研究结果形成了鲜明对比,在之前的研究中,在节拍位置上通常会观察到增强的 P1 反应。强拍上的 P1 反应减弱可在预测编码和时间预测的框架内进行解释,即强拍上音高变化的可预测性较高导致 P1 反应减弱。此外,与非音乐家相比,音乐家的 P1 振幅更高,这表明音乐家的感觉处理能力更强:本研究证明了节拍层次对 P1 分量的影响,从而丰富了我们对听觉处理的理解。研究结果表明,预测编码和时间预测在感官处理过程中发挥着重要作用。此外,研究还表明,音乐训练可增强 P1 反应。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effects of Metrical Context on the P1 Component.

Background and objectives: The temporal structure of sound, characterized by regular patterns, plays a crucial role in optimizing the processing of auditory information. The meter, representing a well-organized sequence of evenly spaced beats in music, exhibits a hierarchical arrangement, with stronger beats occupying higher metrical positions. Moreover, the meter has been shown to influence behavioral and neural processing, particularly the N1, P2, and mismatch negativity components. However, the role of the P1 component in the context of metrical hierarchy remains unexplored. This study aimed to investigate the effects of metrical hierarchy on the P1 component and compare the responses between musicians and non-musicians.

Subjects and methods: Thirty participants (15 musicians and 15 non-musicians) were enrolled in the study. Auditory stimuli consisted of a synthesized speech syllable presented together with a repeating series of four tones, establishing a quadruple meter. Electrophysiological recordings were performed to measure the P1 component.

Results: The results revealed that metrical position had a significant effect on P1 amplitude, with the strongest beat showing the lowest amplitude. This contrasts with previous findings, in which enhanced P1 responses were typically observed at on-the-beat positions. The reduced P1 response on the strong beat can be interpreted within the framework of predictive coding and temporal prediction, where a higher predictability of pitch changes at the strong beat leads to a reduction in the P1 response. Furthermore, higher P1 amplitudes were observed in musicians compared to non-musicians, suggesting that musicians have enhanced sensory processing.

Conclusions: This study demonstrates the effects of metrical hierarchy on the P1 component, thereby enriching our understanding of auditory processing. The results suggest that predictive coding and temporal prediction play important roles in shaping sensory processing. Further, they suggest that musical training may enhance P1 responses.

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来源期刊
Journal of Audiology and Otology
Journal of Audiology and Otology OTORHINOLARYNGOLOGY-
CiteScore
1.90
自引率
9.10%
发文量
20
期刊介绍: Journal of Audiology and Otology (JAO) (formerly known as Korean Journal of Audiology) aims to publish the most advanced findings for all aspects of the auditory and vestibular system and diseases of the ear using state-of-the-art techniques and analyses. The journal covers recent trends related to the topics of audiology, otology, and neurotology conducted by professionals, with the goal of providing better possible treatment to people of all ages, from infants to the elderly, who suffer from auditory and/or vestibular disorders and thus, improving their quality of life. This journal encourages the submission of review papers about current professional issues, research papers presenting a scientific base and clinical application, and case papers with unique reports or clinical trials. We also invite letters to the editor and papers related to the manufacture and distribution of medical devices. This journal provides integrated views from otologists, audiologists, and other healthcare practitioners, offering readers high quality scientific and clinical information. This peer-reviewed and open access journal has been the official journal of the Korean Audiological Society since 1997 and of both the Korean Audiological Society and the Korean Otological Society since 2017. It is published in English four times a year in January, April, July, and October.
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