Harder H, Kylén P, Arlinger S D, Ekvall L
Arch Otolaryngol. 1980 Dec;106(12):757-62. doi: 10.1001/archotol.1980.00790360035010.
Prior to surgery, pure-tone audiometry and bone-conducted (BC) electrocochleography (ECOG) were performed on 17 patients with preoperatively diagnosed otosclerosis. Short tone bursts, approximately 5 ms in duration and presented by means of a bone conductor on the exposed surface of the mastoid, were used as stimuli in BC ECOG. The thresholds thus obtained were compared by regression analysis with conventional psychoacoustic thresholds. Thresholds recorded at BC ECOG showed a close correlation to preoperative pure-tone BC thresholds, and there was no difference in predictability of postoperative hearing thresholds between preoperative BC ECOG and conventional preoperative pure-tone BC thresholds. The results lend support to the conclusion that BC ECOG, offering a monaural, objective estimation of cochlear function, is a valuable complement to conventional audiometry in the preoperative evaluation of hearing in otosclerosis.
手术前，对17例术前诊断为耳硬化症的患者进行了纯音听力测定和骨导（BC）电耳蜗图（ECOG）检查。在BC ECOG中，使用持续时间约5毫秒、通过骨导在乳突暴露表面呈现的短音爆作为刺激。通过回归分析将由此获得的阈值与传统心理声学阈值进行比较。BC ECOG记录的阈值与术前纯音骨导阈值密切相关，术前BC ECOG与传统术前纯音骨导阈值在预测术后听力阈值方面没有差异。结果支持了这样的结论，即BC ECOG能够对耳蜗功能进行单耳、客观评估，在耳硬化症听力术前评估中是传统听力测定的宝贵补充。
