Lins O G, Picton T W, Boucher B L, Durieux-Smith A, Champagne S C, Moran L M, Perez-Abalo M C, Martin V, Savio G
Rotman Research Institute, Baycrest Centre, Canada.
Ear Hear. 1996 Apr;17(2):81-96. doi: 10.1097/00003446-199604000-00001.
To evaluate the audiometric usefulness of steady-state responses to multiple simultaneous tones, amplitude-modulated at 75 to 110 Hz.
Steady-state responses to multiple tones amplitude-modulated at different rates between 75 and 110 Hz and presented simultaneously were recorded at different intensities in normal adults, well babies, normal adults with simulated hearing loss, and adolescents with known hearing losses. Response thresholds were compared with behavioral thresholds.
In normal adults the thresholds for steady-state responses to tones of 0.5, 1, 2, and 4 kHz were 14 +/- 11, 12 +/- 11, 11 +/- 8, and 13 +/- 11 dB, respectively, above behavioral thresholds for air-conducted stimuli, and 11 +/- 5, 14 +/- 8, 9 +/- 8, and 10 +/- 10 dB above behavioral thresholds for bone-conducted stimuli. In well babies tested in a quiet environment, the thresholds were 45 +/- 13, 29 +/- 10, 26 +/- 8, and 29 +/- 10 dB SPL. In adolescents with known hearing losses, the steady-state responses thresholds predict behavioral thresholds with correlation coefficients (r) of 0.72, 0.70, 0.76, and 0.91 at 0.5, 1, 2, and 4 kHz, respectively.
Steady-state responses to tone amplitude-modulated at 75 to 110 Hz can be used for frequency-specific objective audiometry. The multiple-stimulus technique allows thresholds to be estimated for eight different stimuli at the same time.
评估对多个同时呈现的、以75至110赫兹进行幅度调制的纯音的稳态反应在听力测试中的作用。
在正常成年人、健康婴儿、模拟听力损失的正常成年人以及已知听力损失的青少年中，以不同强度记录对75至110赫兹之间不同调制率的多个同时呈现的幅度调制纯音的稳态反应。将反应阈值与行为阈值进行比较。
在正常成年人中，对于0.5、1、2和4千赫兹纯音的稳态反应阈值，分别比气导刺激的行为阈值高14±11、12±11、11±8和13±11分贝，比骨导刺激的行为阈值高11±5、14±8、9±8和10±10分贝。在安静环境中测试的健康婴儿中，阈值为45±13、29±10、26±8和29±10分贝声压级。在已知听力损失的青少年中，稳态反应阈值分别在0.5、1、2和4千赫兹时，与行为阈值的相关系数（r）为0.72、0.70、0.76和0.91。
对75至110赫兹幅度调制纯音的稳态反应可用于特定频率的客观听力测定。多刺激技术允许同时估计八种不同刺激的阈值。
