Two passive mechanical conditions modulate power generation by the outer hair cells
Fig 13
How rOHC and rOHB affect cochlear amplification.
(A) A change in rOHC results in a change in the vOHC-fOHC phase relationship (the curve with ○). The plots indicate the vOHC-fOHC phase difference for the best-responding frequency as a function of location. However, changes in rOHB minimally affect the vOHC-fOHC phase relationship (the curve with ■). An outer hair cell can generate the greatest power when vOHC and fOHC are in phase. (B) A change in rOHB results in a change in the hair bundle displacement gain. When the longitudinal pattern of rOHB is reversed, the dHB gain decreases in the base, but increases in the apex (the curve with ■). However, changes in rOHC minimally affect the dHB gain.