Aran J M, Cazals Y
Ciba Found Symp. 1981;85:217-31. doi: 10.1002/9780470720677.ch13.
The occasional suppression of tinnitus during electrical stimulation of the ear with positive currents has been investigated in 106 patients presenting with any degree of hearing impairment (whether of known or unknown aetiology) from profound deafness to near-normal pure-tone thresholds. Seventy-four percent of these patients presented with tinnitus localized in the ipsilateral ear at the time of examination. The suppression was totally effective in 60% of patients during stimulation through a round-window electrode. The suppression, partial or complete, was obtained in only 43% of patients when stimulation was from the promontory electrode, which served first as a recording electrode for electrocochleography. The sensations (hearing induction and/or tinnitus suppression, and dizziness) during and after the stimulation were evaluated with respect to polarity, intensity and frequency of the electrical impulses. This procedure had several objectives: (1) to confirm the eventual suppression of tinnitus by positive currents; (2) to serve as a tool to differentiate between various types of tinnitus; (3) to assess the possible clinical application for the long-term relief to some patients suffering from tinnitus; (4) to evaluate the possibility of artificial auditory stimulation in profoundly deaf subjects; and (5) to bring some hope to highly disturbed patients.
对106例有任何程度听力损害（从极重度聋到接近正常纯音阈值，病因已知或未知）的患者进行了研究，观察了用正电流经耳部电刺激时耳鸣的偶尔抑制情况。这些患者中74%在检查时耳鸣定位于同侧耳。通过圆窗电极刺激时，60%的患者耳鸣抑制完全有效。当刺激来自作为电耳蜗图记录电极的岬电极时，仅43%的患者获得部分或完全抑制。根据电脉冲的极性、强度和频率评估刺激期间及之后的感觉（听觉诱发和/或耳鸣抑制以及头晕）。该程序有几个目的：（1）确认正电流对耳鸣的最终抑制作用；（2）作为区分不同类型耳鸣的工具；（3）评估对一些耳鸣患者长期缓解的可能临床应用；（4）评估极重度聋患者人工听觉刺激的可能性；（5）给深受困扰的患者带来一些希望。
