Nanjundeswaran Chaya, Shembel Adrianna C
Department of Audiology & Speech Language Pathology, East Tennessee State University, Johnson City, Tennessee.
School of Behavioral and Brain Sciences, Department of Speech, Language, and Hearing, University of Texas at Dallas, Dallas, Texas; Department of Otolaryngology-Head and Neck, Voice Center, University of Texas Southwestern Medical Center, Dallas, Texas.
J Voice. 2022 Aug 6. doi: 10.1016/j.jvoice.2022.07.008.
Vocal fatigue has remained an elusive construct-despite its significant impact on communication, vocation, and quality of life. Current frameworks define vocal fatigue in the context of vocal demands and vocal demand-responses. However, the impact of factors like individuals' baseline vocal fitness and perception of the demand are not well understood. What is also not well understood are the effects of specific vocal demand ingredients on an individual's vocal demand responses. Furthermore, current outcome measures utilized to capture vocal fatigue lack sensitivity and underlying mechanisms are poorly understood. These gaps have led to inconclusive next steps in how to best define, assess, monitor, and manage vocal fatigue. A conceptual framework is needed to study and better understand vocal fatigue constructs. Such a framework should consider the individual's baseline physiology, psychology, key vocal demand ingredients, and biophysiological mechanisms underlying demand responses. The objective of this paper is to help the reader better understand the complex and heterogeneous nature of vocal fatigue and its impact on reliable assessment and monitoring. Future studies will require better elucidation of vocal demand ingredients, will need more sensitive vocal demand response measures, and will need to take in to account an individual's baseline physiology and psychological factors.
尽管嗓音疲劳对沟通、职业和生活质量有重大影响，但它仍然是一个难以捉摸的概念。当前的框架在嗓音需求和嗓音需求反应的背景下定义嗓音疲劳。然而，个体的基线嗓音健康状况和对需求的感知等因素的影响尚未得到充分理解。同样尚未充分理解的是特定嗓音需求因素对个体嗓音需求反应的影响。此外，目前用于捕捉嗓音疲劳的结果测量方法缺乏敏感性，其潜在机制也了解甚少。这些差距导致在如何最好地定义、评估、监测和管理嗓音疲劳方面，后续步骤尚无定论。需要一个概念框架来研究并更好地理解嗓音疲劳概念。这样一个框架应考虑个体的基线生理、心理、关键嗓音需求因素以及需求反应背后的生物生理机制。本文的目的是帮助读者更好地理解嗓音疲劳的复杂和异质性本质及其对可靠评估和监测的影响。未来的研究将需要更好地阐明嗓音需求因素，需要更敏感的嗓音需求反应测量方法，并且需要考虑个体的基线生理和心理因素。
