Dj. Orchik et al., TRANSTYMPANIC ELECTROCOCHLEOGRAPHY IN MENIERES-DISEASE USING CLICKS AND TONE-BURSTS, The American journal of otology, 14(3), 1993, pp. 290-294
Transtympanic electrocochleography (ECoG), using clicks and tone-burst
s at 500, 1000, and 2000 Hz, was employed to study 80 patients with Me
niere's disease and 25 non-Meniere's patients. The magnitude of the ne
gative summating potential and the summating potential:action potentia
l ratio (SP:AP) were examined in both groups. Groups were further divi
ded based upon degree of hearing loss and audiometric configuration. A
n elevated SP:AP ratio was found in 83.7 percent of the Meniere's ears
and 12 percent of the non-Meniere's. The likelihood of obtaining a po
sitive ECoG in Meniere's patients was strongly related to degree of he
aring loss but not audiometric configuration.