生理指标SpO2和心率是聆听努力与疲劳的生物学标志物吗？

文献信息

中文摘要

目的： 探讨氧饱和度（SpO2）和心率等生理指标能否可靠地指示聆听努力与疲劳，并可能作为传统主观报告的客观替代指标，用于评估助听器中数字降噪（DNR）的效果。
方法： 通过重复测量设计，我们在DNR开启和关闭条件下，评估了35名佩戴助听器的轻至中重度感音神经性听力损失参与者的聆听努力与疲劳。参与者执行双任务以评估聆听努力与疲劳，并在任务前、任务中和任务后阶段使用脉搏血氧仪记录生理数据（SpO2和心率）。通过自评量表获得对聆听努力、疲劳、注意力和专注力的主观评分，以评估DNR效果和生理标志物的敏感性。
结果： 与DNR关闭相比，DNR开启时观察到复述和回忆得分显著更高，同时聆听努力和反应时间降低。后测评分显示，与测试前相比，参与者在DNR开启时报告聆听努力和疲劳显著减少，注意力和专注力改善，而在关闭条件下则相反。在DNR开启时，测试前和测试后阶段之间观察到心率存在显著差异。SpO2中位数水平从任务前到任务后阶段显著升高，在任务阶段也存在显著差异。此外，在DNR开启时发现疲劳与SpO2之间呈负相关，而在DNR关闭时注意到注意力与SpO2之间呈正相关。
结论： 生理指标，尤其是SpO2，初步显示出作为聆听努力和疲劳潜在客观标志物的前景，与行为和主观结果一致，但仍需进一步验证。

英文摘要

PURPOSE: To investigate whether physiological measures such as oxygen saturation (SpO 2 ) and heart rate can reliably indicate listening effort and fatigue as well as possibly serve as objective alternatives to traditional subjective reports in the evaluation of the effects of digital noise reduction (DNR) in hearing aids.
METHODS: Through a repeated-measures design, we evaluated listening effort and fatigue in 35 participants with mild-to-moderately-severe sensorineural hearing loss using hearing aids, under DNR-on and DNR-off conditions. The participants performed a dual task for us to assess listening effort and fatigue, and physiological data (SpO 2 and heart rate) were recorded with a pulse oximeter during the pretask, task, and posttask phases. Subjective ratings of listening effort, fatigue, attention, and concentration were obtained via self-report scales to assess DNR effectiveness and physiological marker sensitivity.
RESULTS: In DNR on, a significantly-higher score on repetition and recall was observed, along with reduced listening effort and reaction time, compared with DNR off. The posttest scores showed that the participants reported significantly less listening effort and fatigue, with improved attention and concentration in DNR on than in the pretest, whereas the opposite was true in the off condition. A notable difference in heart rates was observed between the pre- and post-test phases in DNR on. The median SpO 2 levels significantly increased from the pre- to the post-task phases, with a notable difference during the task phase as well. Additionally, a negative correlation was found between fatigue and SpO 2 in DNR on, while a positive relationship was noted between attention and SpO 2 in DNR off.
CONCLUSION: Physiological measures, particularly SpO 2 , show preliminary promise as potential objective markers of listening effort and fatigue, aligning with behavioral and subjective outcomes, but this requires further validation.