Mou Zhiwei, Peng Kang, Ye Wujian, Xu Jing, Chen Yumei, Tong Meiqinzi, Lu Jianliang
Department of Rehabilitation, Guangzhou Red Cross Hospital of Jinan University.
Department of Rehabilitation, the First Affiliated Hospital of Jinan University.
J Craniofac Surg. 2025 Mar 20. doi: 10.1097/SCS.0000000000011233.
The objective of the present study is to identify acoustic parameters for speech evaluation in patients who speak Mandarin, with Parkinson disease-related hypokinetic dysarthria (PDHD).
The authors' sample included 31 patients with PDHD and 38 neurologically normal adults in a similar age range. The authors recorded each participant articulating a list of Mandarin monosyllables that included 6 monophthong vowels (i.e., /a, i, u, ɤ, y, o/). The authors identified the vowel duration (V-dur) and formants (F1 and F2) of each vowel token. On the basis of the formants, the authors calculated and analyzed the acoustic indexes of vowel space area (VSA), vowel articulation index (VAI), and formant centralization ratio (FCR) of the vowels.
Compared with healthy speakers, patients with PDHD had a significantly longer vowel duration for all 6 vowels (P < 0.01). The differences in VSA, VAI, and FCR between the case and normal groups were all statistically significant.
Differences in vowel acoustic indexes (V-dur, VSA, VAI, and FCR) between the 2 groups revealed that these 4 indexes were sensitive to the variation in vowel production in patients with PDHD. These indexes can be used to evaluate speech intelligibility caused by impaired vowel pronunciation in patients with PDHD and the outcome of rehabilitation therapy.
本研究的目的是确定患有帕金森病相关运动减少型构音障碍（PDHD）的普通话使用者语音评估的声学参数。
作者的样本包括31名患有PDHD的患者和38名年龄范围相似的神经功能正常的成年人。作者记录了每位参与者说出的一串普通话单音节，其中包括6个单元音（即/a、i、u、ɤ、y、o/）。作者确定了每个元音样本的元音时长（V-dur）和共振峰（F1和F2）。基于共振峰，作者计算并分析了元音的元音空间面积（VSA）、元音清晰度指数（VAI）和共振峰集中率（FCR）的声学指标。
与健康说话者相比，患有PDHD的患者所有6个元音的元音时长均显著更长（P < 0.01）。病例组和正常组之间的VSA、VAI和FCR差异均具有统计学意义。
两组之间元音声学指标（V-dur、VSA、VAI和FCR）的差异表明，这4个指标对PDHD患者元音发音的变化敏感。这些指标可用于评估PDHD患者元音发音受损导致的言语可懂度以及康复治疗的效果。
