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Dear Sirs,
I wish to comment on the recent article by Chen et al. [1] Vestibular migraine or Meniere’s disease: a diagnostic dilemma. It is an attempt to review the various electrophysiological tests that might distinguish the two conditions. The section on electrocochleography (EcochG) merits comment. It concentrates on five EcochG studies employing a remote electrode and a click stimulus. There is misleading statement referenced to a comprehensive review of the history of the EcochG and the insensitivity of a click stimulus [2].
It has been exhaustively demonstrated that responses from a remote (eardrum) electrode are significantly smaller than those from a direct electrode. In addition, the diagnostic sensitivity for cochlear hydrops is vastly inferior to tone bursts whose responses cannot reliably be measured by a remote electrode. That audiologists have not employed a tone burst stimulus EcochG seems to be that it requires special co-operation and customized equipment that standard commercial systems used by audiologists cannot deliver. This information has been reviewed in detail [2,3,4]. The variation in EcochG techniques and results have likely impeded progress on the objective diagnosis of Meniere’s disease and its distinction from vestibular migraine for at least 20 years.
References
Chen J-Y, Zao-Qui G, Wang J, Liu D, Tian E, Guo J-q, Kong W-J (2022) Vestibular migraine or Meniere’s disease: a diagnostic dilemma. J Neurol. https://doi.org/10.1007/s00415-022-11532-x
Hornibrook J (2017) Tone burst electrocochleography for the diagnosis of clinically certain Meniere’s disease. Front Neurosci. https://doi.org/10.3389/fnins.2017.00301
Hornibrook J (2016) Electrocochleography for the diagnosis of Meniere’s disease: the wrong stimulus. Otol Neurotol 136:1677–1678
Hornibrook J, Gourley J, Vraich G (2020) Tone burst electrocochleography disproves a diagnosis of Meniere’s disease treated aggressively. HNO 68:352–358
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Hornibrook, J. Electrocochleography (EcochG) for the diagnosis of cochlear endolymphatic hydrops. J Neurol 270, 2789 (2023). https://doi.org/10.1007/s00415-023-11571-y
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DOI: https://doi.org/10.1007/s00415-023-11571-y