Zhang Zhaoyan
UCLA School of Medicine, Los Angeles, CA.
J Voice. 2023 Mar 22. doi: 10.1016/j.jvoice.2023.02.021.
While current voice research often focuses on laryngeal adjustments in a two-dimensional plane from a superior endoscopic view, recent computational simulations showed that vocal control is three-dimensional and the medial surface vertical thickness plays an important role in regulating the glottal closure pattern and the spectral shape of the produced voice. In contrast, while a small glottal gap is required to initiate and sustain phonation, further changes in the glottal gap within this small range have only small effects on glottal closure and spectral shape. Vocal fold stiffness, particularly along the anterior-posterior direction, plays an important role in pitch control but has only a small effect on glottal closure and spectral shape. These results suggest that voice research should pay more attention to medial surface shape in the vertical dimension. Future studies in a large population of both normal speakers and patients are needed to better characterize the three-dimensional medial surface shape, its variability between speakers, changes throughout the life span, and how it is impacted by voice disorders and clinical interventions. The implications for voice pedagogy and clinical intervention are discussed.
虽然当前的嗓音研究通常从上位内镜视角聚焦于二维平面中的喉部调整，但最近的计算模拟表明，发声控制是三维的，且内侧表面垂直厚度在调节声门闭合模式和所产生声音的频谱形状方面起着重要作用。相比之下，虽然启动和维持发声需要一个小的声门间隙，但在这个小范围内声门间隙的进一步变化对声门闭合和频谱形状的影响很小。声带刚度，尤其是沿前后方向的刚度，在音高控制中起着重要作用，但对声门闭合和频谱形状的影响很小。这些结果表明，嗓音研究应更多地关注垂直维度上的内侧表面形状。需要对大量正常发声者和患者进行进一步研究，以更好地表征三维内侧表面形状、其在不同发声者之间的变异性、一生当中的变化，以及它如何受到嗓音障碍和临床干预的影响。本文还讨论了其对嗓音教学法和临床干预的意义。
