TABLE 2.
Hair-bundle stiffness of inner hair cells and outer hair cells
| Hair cell | KHB (mN·m−1) (control) | KHB (mN·m−1) (test) | N | Condition |
|---|---|---|---|---|
| OHC (apex) | 3.1 ± 0.4 | — | 22 | 1.5 mM Ca |
| IHC (apex) | 3.0 ± 0.6 | — | 9 | 1.5 mM Ca |
| OHC (middle) | 6.8 ± 2.5 | — | 6 | 1.5 mM Ca |
| OHC (apex) | 3.1 ± 0.4 | 1.9 ± 0.4 | 5 | + BAPTA |
| IHC (apex) | 3.5 | 2.3 | 1 | + BAPTA |
| OHC (apex) | 2.6 ± 0.2 | 5.6 ± 1.3 | 5 | + 0.2 mM DHS |
| IHC (apex) | 2.5 | 3.6 | 1 | + 0.2 mM DHS |
| OHC (apex) | 2.5 ± 0.8 | 4.5 ± 1.0 | 8 | 0.02 mM Ca |
Mean ± SE of the hair-bundle stiffness (KHB) for small deflections about the resting position of the bundle for IHCs and OHCs under various conditions. For OHCs, measurements are given for two cochlear locations corresponding to a CF of 4 kHz (apex) and 14 kHz (middle). N = number of experiments