Zenker Castro Franz, Barajas de Prat Jose Juan, Larumbe Zabala Eneko
Clinica Barajas, Santa Cruz de Tenerife, Spain.
Int J Audiol. 2008 May;47(5):269-75. doi: 10.1080/14992020801945501.
This study evaluated the use of multiple auditory steady-state responses (ASSRs) to estimate the growth of loudness in listeners with normal hearing. Individual intensity functions were obtained from measures of loudness growth using the contour test and from the electrophysiological amplitude measures of multiple amplitude-modulated (77-105 Hz) tones (500, 1000, 2000, and 4000 Hz) simultaneously presented to both ears and recorded over the scalp. Slope analyses for the behavioural and electrophysiological intensity functions were separately performed. Response amplitudes of the ASSRs and loudness sensation judgements increase as the stimulus intensity increases for the four frequencies studied. A significant relationship was obtained between loudness and the ASSRs. The results of this study suggest that the amplitude of the ASSRs may be used to estimate loudness growth at least for individuals with normal hearing.
本研究评估了使用多个听觉稳态反应（ASSR）来估计听力正常的听众响度增长情况。通过使用等高线测试测量响度增长以及同时向双耳呈现并记录头皮上多个调幅（77 - 105 Hz）音调（500、1000、2000和4000 Hz）的电生理幅度测量，获得了个体强度函数。分别对行为和电生理强度函数进行了斜率分析。在所研究的四个频率上，随着刺激强度增加，ASSR的反应幅度和响度感觉判断均增加。响度与ASSR之间获得了显著关系。本研究结果表明，ASSR的幅度至少可用于估计听力正常个体的响度增长情况。
