All Three Rows of Outer Hair Cells Are Required for Cochlear Amplification

Figure 6

Estimated relationship between the force generated by the OHC and the displacement amplitude of the tip of its stereocilia. The maximum value of the force generated by the OHC is estimated to be 155 nN to obtain a gain of the BM displacement amplitude () of 28 dB at 16 kHz with a stimulus intensity of 20 dB SPL. Positive displacement and positive force are defined as shown in the schematic of the OHC.