Innitzer J
Laryngol Rhinol Otol (Stuttg). 1976 May;55(5):349-58.
A series of 13 patients where surgery confirmed retrocochlear lesions in the cerebellopontine angle was tested preoperatively by electro-cochleography. The following conclusions can be drawn: 1. Compound action potentials (CAP) of the acoustic nerve could be registered by electro-cochleography in all patients regardless of the fact whether hearing on the side of the lesion could be demonstrated in pure tone audiometry or not. 2. The threshold latency for the 2 kHz sinustone-burst elicited compound action potential was within the normal range if hearing on the side of the lesion could be shown in pure tone audiometry. Threshold latency for 2 kHz CAP was shortened pathologically when hearing on the side of the lesion was absent in pure tone audiometry.
对13例经手术证实桥小脑角存在蜗后病变的患者术前进行了电耳蜗描记术检测。可得出以下结论：1. 无论纯音听力测定能否显示病变侧的听力，电耳蜗描记术均可记录到所有患者听神经的复合动作电位（CAP）。2. 如果纯音听力测定显示病变侧有听力，则2kHz正弦波猝发声诱发的复合动作电位的阈值潜伏期在正常范围内。当纯音听力测定显示病变侧无听力时，2kHz CAP的阈值潜伏期病理性缩短。
