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Insulated transtympanic needle contacting the cochlea in a right round window niche. Recording response to a click and a 1-kHz tone burst. Reproduced by permission from Hornibrook J, George P, Gourley J. Vasopressin in definite Ménière’s disease with positive electrocochleographic findings. Acta Otolaryngol 2011;131:613–7.
