Cross-modality matching: a tool for measuring loudness in sensorineural impairment.
Cross-modality matching: a tool for measuring loudness in sensorineural impairment.
复制标题
跨模态匹配：测量感音神经损伤响度的工具。
作者：
R. Hellman
客观的
本研究的主要目标是确定跨模态匹配（CMM）用于测量感音神经性听力障碍中个体响度函数的可行性。为了实现这一目标，CMM经过严格测试，评估四个测量要求：1）内部一致性； 2）听众之间的相对差异较小； 3）重测信度； 4) 数据有效性。
设计
测量涉及两个感觉连续体：感知长度和响度。感觉幅度函数是根据感知长度的绝对幅度估计 (AME)、响度和感知长度之间的 CMM、以及 AME 和响度的绝对幅度产生 (AMP) 生成的。共有 211 名听众执行了所有四项幅度缩放任务，其中 83 名在刺激频率下听力正常，128 名被诊断为长期耳蜗损伤。还获得了补充响度匹配。
结果
根据数据分析，得到以下结果。首先，与正常听力的响度测量一致，耳蜗听力受损的响度测量表明，双侧听力障碍的个体可以产生内部一致的响度数据。其次，在耳蜗损伤使响度函数变得陡峭的刺激范围内，在从 CMM 导出的双对数图中，响度斜率（如从 AME 和 AMP 获得的响度斜率）在耳蜗损伤听力中比在正常听力中更大。然而，CMM 的结果通常比从响度 AME 和 AMP 获得的结果变化较小，从而可以清楚地区分正常听力和耳蜗受损听力的响度增长率（斜率）。第三，结果表明，在耳蜗受损人群中，响度函数斜率的主体间变异性很大程度上可归因于个体阈值的异质性。与响度匹配一致，斜率的大小随着听力损失程度的增加而增加。对于高达 75 dB 的听力损失，观察到斜率大小对听力损失程度的依赖性。第四，36 名听众的重测可靠性数据表明，从长远来看，CMM 可以为耳蜗受损的听力提供可靠且稳定的响度增长测量结果。最后，直接从响度匹配获得的等感匹配与从幅度缩放间接获得的感觉匹配非常一致，表明CMM是测量响度幅度的有效方法。
结论
总而言之，结果表明 CMM 可以在耳蜗受损的听力中产生稳定、准确和稳健的响度增长测量。鉴于其明显的可靠性、有效性和易于应用，CMM 有潜力成为评估临床人群响度增长的强大工具。从 CMM 导出的响度级函数对于确定助听器的频率增益响应很重要，该响应最能补偿受损听觉系统的失真输入输出函数。
OBJECTIVE
The main goal of this study was to establish the viability of cross-modality matching (CMM) for the measurement of individual loudness functions in sensorineural-impaired hearing. To achieve this goal, CMM was tested rigorously to assess four measurement requirements: 1) internal consistency; 2) small relative variance across listeners; 3) test-retest reliability; and 4) data validity.
DESIGN
The measurements involved two sensory continua: perceived length and loudness. Sensation-magnitude functions were generated for all listeners from absolute magnitude estimation (AME) of perceived length, from CMM between loudness and perceived length, and from AME and absolute magnitude production (AMP) of loudness. A total of 211 listeners, 83 with normal hearing at the stimulus frequency and 128 with a diagnosis of cochlear impairment of long duration, performed all four magnitude-scaling tasks. Supplementary loudness matches also were obtained.
RESULTS
Based on the analysis of data, the following results were obtained. First, in accord with loudness measures in normal hearing, loudness measures in cochlear-impaired hearing showed that individuals with bilateral impairments can produce internally consistent loudness data. Second, over the stimulus range where cochlear impairment steepens the loudness function, in a log-log plot loudness slopes derived from CMM, like those obtained from AME and AMP of loudness, were larger in cochlear-impaired hearing than in normal hearing. However, the results of CMM were typically less variable than those obtained from AME and AMP of loudness, permitting a clear-cut distinction between loudness growth rates (slopes) in normal and cochlear-impaired hearing. Third, the results showed that within a cochlear-impaired population, much of the intersubject variability of the slope of the loudness function can be ascribed to the heterogeneity of individual thresholds. Consistent with loudness matching, the size of the slopes increased with the degree of hearing loss. The dependence of the size of the slopes on the degree of hearing loss was observed for hearing losses as large as 75 dB. Fourth, test-retest reliability data for 36 listeners showed that CMM can yield reliable and stable loudness-growth measures in cochlear-impaired hearing over the long term. Finally, equal-sensation matches obtained directly from loudness matching closely agreed with those obtained indirectly from magnitude scaling, indicating that CMM is a valid method for the measurement of loudness magnitudes.
CONCLUSIONS
Taken together, the results demonstrate that CMM can yield stable, accurate, and robust loudness growth measures in cochlear-impaired hearing. Given its apparent reliability, validity, and ease of application, CMM has the potential to become a powerful tool for assessing the growth of loudness in a clinical population. Loudness-level functions derived from CMM may well be important for determining the frequency-gain response of a hearing aid that most closely compensates for the distorted input-output function of the impaired auditory system.
基底膜非线性和响度。
DOI：
10.1121/1.421379
发表时间：
1998
期刊：
The Journal of the Acoustical Society of America
影响因子：
--
作者：
Schlauch,RS;DiGiovanni,JJ;Ries,DT
通讯作者：
Ries,DT