Maurizi M, Ottaviani F, Almadori G, Falchi M, Paludetti G
Audiology. 1987;26(2):111-6.
Patients with acute peripheral facial palsy (Bell's palsy) were examined by auditory brainstem response (ABR) and middle-latency response (MLR) for signs of brainstem involvement. ABR data on 30 patients indicated that wave V latencies were abnormal by greater than 3 SD in only 2 patients, 1 of whom showed abnormality contralateral to the affected side. When the criterion for abnormality was reduced to 2 SD, wave V abnormality was found in only 3 of the 30 patients. All 14 patients tested by MLR showed normal responses. These findings suggest that on the basis of evoked potential measures, brainstem involvement may not be pathognomonic of Bell's palsy.
对急性周围性面瘫（贝尔面瘫）患者进行听性脑干反应（ABR）和中潜伏期反应（MLR）检查，以寻找脑干受累迹象。30例患者的ABR数据显示，仅2例患者的V波潜伏期异常超过3个标准差，其中1例在患侧对侧出现异常。当异常标准降至2个标准差时，30例患者中仅3例发现V波异常。接受MLR检查的14例患者均显示反应正常。这些发现表明，基于诱发电位测量，脑干受累可能并非贝尔面瘫的特征性表现。
