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Normal brainstem auditory evoked potentials in man with vertigo, tinnitus, and bilateral sudden sensorineural hearing loss

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The electrocochleogram showed the binaural SP/AP (summating potential/action potential) ratio in the normal range at 90 dBnHL (decibel normal hearing level), with the left ear SP/AP ratio 0.33 and the right ear SP/AP ratio 0.25. (Source: Yuan Z, Xiang L, Liu R, Yue W. Case report: bilateral sudden deafness in acute middle cerebellar peduncle infarction: central or peripheral? Front Med [Lausanne] 2023;10:1174512. Creative Commons Attribution 4.0 International [CC BY 4.0] license, creativecommons.org/licenses/by/4.0.)