A Puzzle of Vestibular Physiology in a Meniere’s Disease Acute Attack

Figure 3

Spontaneous nystagmus and results of the video head-impulse test at the initiation of the crisis and at the end. Nystagmus is left beating with an upward component and there is a clear decrease in the gain of the vestibuloocular reflex in the plane of the left superior semicircular canal and right posterior canal (LARP) and the consequent presence of saccades. After the acute attack the same evaluation shows an increase of the gain and a significant decrease of the nystagmus.