Francis D A, Bronstein A M, Rudge P, du Boulay E P
Institute of Neurology, National Hospital, London, UK.
J Neurol Neurosurg Psychiatry. 1992 Jun;55(6):446-9. doi: 10.1136/jnnp.55.6.446.
Ten patients with canal paresis of central origin and ten patients with peripheral canal paresis were studied using MRI of the brainstem to identify lesions within the central vestibular pathways. In the central group, the magnitude of the canal paresis was generally lower than in the peripheral group and removal of fixation had little effect on the nystagmic response. In the peripheral group, removal of fixation enhanced the nystagmus and lessened the discrepancy between the two ears. Statistical processing of the MRI showed that in the central group significant spatially coincident lesions occurred within the medial vestibular nucleus, lateral vestibular nucleus and proximal portion of the vestibular fascicle.
对10例中枢性起源的半规管麻痹患者和10例周围性半规管麻痹患者进行了脑干磁共振成像(MRI)检查,以确定中枢前庭通路内的病变。中枢组的半规管麻痹程度通常低于周围组,去除固视对眼震反应影响不大。在周围组中,去除固视可增强眼震并减少双耳之间的差异。MRI的统计处理显示,中枢组在内侧前庭核、外侧前庭核和前庭束近端出现了明显的空间重合性病变。