An adaptive protocol to assess physiological responses as a function of task demand in speech-in-noise testing.

IF 2.7 4区医学 Q2 BIOCHEMICAL RESEARCH METHODS Journal of Neuroscience Methods Pub Date : 2024-12-31 DOI:10.1016/j.jneumeth.2024.110348

Edoardo Maria Polo, Davide Simeone, Maximiliano Mollura, Alessia Paglialonga, Riccardo Barbieri

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Abstract

Background: Acoustic challenges impose demands on cognitive resources, known as listening effort (LE), which can substantially influence speech perception and communication. Standardized assessment protocols for monitoring LE are lacking, hindering the development of adaptive hearing assistive technology.

New method: We employed an adaptive protocol, including a speech-in-noise test and personalized definition of task demand, to assess LE and its physiological correlates. Features extracted from electroencephalogram, galvanic skin response, electrocardiogram, respiration, pupil dilation, and blood volume pulse responses were analyzed as a function of task demand in 21 healthy participants with normal hearing.

Results: Heightened sympathetic response was observed with higher task demand, evidenced by increased heart rate, blood pressure, and breath amplitude. Blood volume amplitude and breath amplitude exhibited higher sensitivity to changes in task demand.

Comparison with existing methods: Notably, galvanic skin response showed higher amplitude during low task demand phases, indicating increased attention and engagement, aligning with findings from electroencephalogram signals and Lacey's attention theory.

Conclusions: The analysis of a range of physiological signals, spanning cardiovascular, central, and autonomic domains, demonstrated effectiveness in comprehensively examining LE. Future research should explore additional levels and manipulations of task demand, as well as the influence of individual motivation and hearing sensitivity, to further validate these outcomes and enhance the development of adaptive hearing assistive technology.

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背景：声学挑战对认知资源提出了要求，即所谓的聆听努力（LE），这会严重影响言语感知和交流。目前还缺乏监测聆听强度的标准化评估方案，这阻碍了自适应听力辅助技术的发展：新方法：我们采用了一种自适应方案，包括噪声言语测试和任务需求的个性化定义，来评估聆听强度及其生理相关性。我们分析了从 21 名听力正常的健康参与者的脑电图、皮肤电反应、心电图、呼吸、瞳孔放大和血容量脉搏反应中提取的特征，并将其作为任务需求的函数：结果：任务要求越高，交感神经反应越强烈，表现为心率、血压和呼吸幅度增大。血容量振幅和呼吸振幅对任务需求变化的敏感性更高：值得注意的是，皮肤电化反应在低任务需求阶段显示出更高的振幅，表明注意力和参与度增加，这与脑电信号和雷西注意力理论的研究结果一致：对心血管、中枢和自律神经领域的一系列生理信号进行分析，证明了全面检查 LE 的有效性。未来的研究应探索任务需求的更多层次和操作方法，以及个人动机和听力敏感度的影响，以进一步验证这些结果，促进自适应听力辅助技术的发展。

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来源期刊

Journal of Neuroscience Methods 医学-神经科学

CiteScore

7.10

自引率

3.30%

发文量

226

审稿时长

52 days

期刊介绍： The Journal of Neuroscience Methods publishes papers that describe new methods that are specifically for neuroscience research conducted in invertebrates, vertebrates or in man. Major methodological improvements or important refinements of established neuroscience methods are also considered for publication. The Journal''s Scope includes all aspects of contemporary neuroscience research, including anatomical, behavioural, biochemical, cellular, computational, molecular, invasive and non-invasive imaging, optogenetic, and physiological research investigations.