Isolated Vertical Gaze Evoked Nystagmus

vertBRN Blattgerste fi01

When the patient looks upward, the quick phase of the nystagmus beats upwardly. 17 seconds: when the patient looks downward, the quick phase direction changes, now beating downwardly. Typical finding of a vertical gaze nystagmus. This indicates a lesion of the interstitial nucleus of Cajal.

When the patient looks upward, the quick phase of the nystagmus beats upwardly. 17 seconds: when the patient looks downward, the quick phase direction changes, now beating downwardly. Typical finding of a vertical gaze nystagmus. This indicates a lesion of the interstitial nucleus of Cajal.