Archives of Acoustics, 31, 4(S), pp. 17-21, 2006

A method of measuring cochlear potentials evoked by two-tone excitation

Wojciech Michalski
Wrocław University of Technology, Institute of Telecommunications, Teleinformatics and Acoustics Wybrzeże Wyspiańskiego 27, 50-370 Wrocław
Poland

W. Dziewiszek
Wrocław Medical University, Clinic and Department of Otolaryngology, T. Chałubińskiego 2, 50-368 Wrocław
Poland

M. Bochnia
Wrocław Medical University, Clinic and Department of Otolaryngology, T. Chałubińskiego 2, 50-368 Wrocław
Poland

This paper presents a new method of measuring cochlear microphonics (CM) evoked by
a two-tone acoustic wave. The method is based on phase sensitive detection whereby it is
possible to precisely measure not only excitation frequency CM signals but also combination
signals. The method can be used in experiments conducted on animals. Exemplary experimental
results are given.
Keywords: phase sensitive detection, cochlear potentials.
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