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. Author manuscript; available in PMC: 2006 Jul 19.
Published in final edited form as: Hear Res. 2005 Sep 8;210(1-2):53–62. doi: 10.1016/j.heares.2005.07.003

Fig. 3.

Fig. 3

Normalized sound pressure (a) and cochlear potential (b) responses measured pre-dehiscence. Linear responses do not vary with level of stimulus voltage to the earphone (Vstim) due to normalization. (a) The PEC normalized by Vstim recorded at the TM at three different levels of attenuation. Nonlinear behavior is observed in the low frequencies (80–300 Hz) consistent with observations by others (Kim et al., 1980; Ravicz and Rosowski, 2001). (b) The cochlear potential normalized by Vstim at three different levels of attenuation. At 20 dB attenuation (20 dBA), the CP signal is clearly saturated as evidenced by its lower overall normalized magnitude. At 40 dB attenuation (40 dBA) the signal-to-noise ratio deteriorates.