Blagoveshchenskaia N S, Kapitanov D N
Vestn Otorinolaringol. 1994 May-Jun(3):5-8.
Midbrain affection can be evidenced by pronounced central cochleovestibular syndrome which presents with converging spontaneous nystagmus, elements of monocular nystagmus, early impairment of optokinetic nystagmus in all the directions, bilateral neurosensory hypoacusis, a dramatic decrease of speech intelligibility in several sound sources, disturbed binaural hearing in normal or symmetrically reduced hearing, the absence of sound lateralization in Weber test under acute hearing asymmetry or unilateral deafness. Midbrain tumors are characterized by early hypertensive otoneurological syndrome indicated by caloric nystagmus of longer duration and greater tonicity. One case of midbrain lesion is detailed.
中脑病变可通过明显的中枢性耳蜗前庭综合征得以证实，该综合征表现为会聚性自发性眼球震颤、单眼眼球震颤成分、各个方向视动性眼球震颤早期受损、双侧神经性听力减退、多个声源下言语清晰度急剧下降、听力正常或对称性降低时双耳听力障碍、急性听力不对称或单侧耳聋时韦伯试验中声音无侧向定位。中脑肿瘤的特征是早期高血压性耳神经综合征，表现为持续时间更长且张力更大的冷热试验性眼球震颤。详细介绍了一例中脑病变病例。
