Penner M J
University of Maryland.
J Speech Hear Res. 1988 Dec;31(4):582-7. doi: 10.1044/jshr.3104.582.
This study explored the relation between changes reported in the perception of the loudness of tinnitus after noise exposure and changes measured in matches to the loudness of tinnitus after noise exposure. Preexposure assessment of the loudness of tinnitus was followed by monaural exposure to wide-band Gaussian noise (for a 5-min period), after which a pulsed, 200-ms tone was presented either ipsilateral or contralateral to the exposed ear. Following each noise exposure, the subject (a) judged the change in the pre- and postexposure tinnitus strength and (b) compared the loudness of the postexposure tinnitus to that of the pure tone. By combining data across noise exposures, a measure of the postexposure tinnitus magnitude was computed. For three of six subjects, the pre- and postexposure magnitude did not differ significantly even though the judgments indicated that the pre- and postexposure loudness of the tinnitus had changed. These data raise the possibility that some loudness judgments reflect variability in the tinnitus rather than the effect of the noise on the tinnitus.
本研究探讨了噪声暴露后耳鸣响度感知变化与噪声暴露后耳鸣响度匹配测量变化之间的关系。在对耳鸣响度进行暴露前评估后，单耳暴露于宽带高斯噪声（持续5分钟），之后在暴露耳的同侧或对侧呈现一个200毫秒的脉冲音。每次噪声暴露后，受试者（a）判断暴露前后耳鸣强度的变化，（b）将暴露后耳鸣的响度与纯音的响度进行比较。通过合并不同噪声暴露的数据，计算出暴露后耳鸣强度的测量值。在六名受试者中有三名，尽管判断表明暴露前后耳鸣的响度发生了变化，但暴露前后的强度并无显著差异。这些数据增加了一种可能性，即一些响度判断反映的是耳鸣的变异性，而非噪声对耳鸣的影响。
