在患有帕金森病的扬声器中,时机典型性的声学相关性
Saul A Frankford1,2,3, Cara E Stepp1,4
1Department of Speech, Language, and Hearing Sciences, Boston University, MA.
概括
分析语音时间偏差的声学指标,包括单词和暂停持续时间,可以准确地预测听众对帕金森病 (PD) 患者典型性的感知. 这为PD语音分析提供了潜在的客观测量.
科学领域:
- 语音语言病理学 语言病理学
- 神经学 神经学
- 声学分析 声学分析
背景情况:
- 帕金森病 (PD) 通常会影响语音时间,影响沟通.
- 听众对PD典型语音时刻的感知是主观的,需要客观的措施.
研究的目的:
- 识别与听众对讲话时间典型性的感知相关的声学指标,在患有PD的个体.
- 测试这个假设,说话时间的偏差,暂停时间和单词级别的时间预测了被感知到的语言典型性.
主要方法:
- 录制了20名PD患者和40名典型发言人的演讲,他们阅读了一段标准的段落.
- 计算的声学定时测量 (绝对和相对控制).
- 使用线性回归来将声学测量与感知时间典型性相关联.
主要成果:
- 使用平均单词和单词间持续时间 (绝对和相对) 的模型解释了93%的感知时间典型性的差异.
- 这突显了持续时间和暂停在PD患者的语音时间感知中的重要作用.
结论:
- 反映规范语音时间偏差的声学测量,包括暂停和失调,可以客观地估计PD的时间典型性.
- 对于临床和研究应用,需要对更大样本进行进一步的验证.
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