语音频率变化的影响在帕金森病的声器声学结果
Thea Knowles1, Scott G Adams2,3,4, Mandar Jog4
1Department of Communicative Sciences and Disorders, Michigan State University, East Lansing, MI, United States.
Frontiers in human neuroscience
|March 7, 2024
概括
帕金森病 (PD) 中的语音减速可以改变语音. 虽然说话速度较慢可能对一些人有好处,但患有PD的个体,特别是患有下丘脑核深度大脑刺激 (STN-DBS) 的人,可能会经历有害的声音变化.
科学领域:
- 神经学 神经学
- 语音语言病理学 语言病理学
- 声学分析 声学分析
背景情况:
- 语音减速是帕金森病 (PD) 语音缺陷的常见疗法,旨在提高理解力.
- 虽然旨在增强口音,但改变语音速率对其他声乐子系统的影响尚未完全理解.
- 了解这些影响至关重要,因为并非所有患有PD的人都能从降低率的策略中受益.
研究的目的:
- 量化PD和没有PD的个体在广泛的语音速率中发生的音声变化.
- 为了研究语音速率修改对声音声学参数的影响.
- 将这些变化与不同群体进行比较:年轻和年长的健康对照组,以及患有PD的个体,有或没有脑下核深度大脑刺激 (STN-DBS).
主要方法:
- 参与者 (四组:年轻人/老人对照,PD +/- STN-DBS) 以七种不同的语音速度 (缓慢,习惯,快速) 阅读标准化的句子.
- 分析了声学指标,包括语音强度,头峰突出度 (CPP) 和基本频率 (F0).
- 数据被分析为语音速率和参与者组的函数.
主要成果:
- 较慢的语音速率诱导了不同组的不同音响响应.
- 较年轻的对照显示强度增加,CPP速度较慢;STN-DBS的PD显示相反的模式.
- 所有组都在更快的语音速度上表现出增加的CPP,这表明潜在的喉变化超出了预期的发音效益.
结论:
- 在患有PD的个体中,语音速率的修改可能会导致意想不到的语音后果.
- 患有PD和STN-DBS的个体可能特别容易受到语音损害,当语音减慢时.
- 研究结果表明,在PD语言治疗中,要仔细考虑语音速率候选因素及其对喉功能的影响.
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