Table 1. Main parameters used.
| Symbol | Value, unit | Description |
|---|---|---|
| I | pA | Transducer current |
| X | nm | Bundle displacement at the tip |
| po(X) | Transducer channel open probability | |
| Inf(X) | m-2 | Information about X contained in I |
| Sl | pA2 | Transducer current power signal |
| Nl | pA2 | Transducer current power noise |
| Mc | 0.50 ± 0.16 | Noise-matching parameter |
| Nch | 80 ± 26 | Number of transducer channels per cell |
| X0 | 44 ± 18 nm | Bundle displacement at which po = 0.5 |
| σmin | 5.9 ± 1.9 nm | Intrinsic-channel noise (Cramér—Rao bound) |
| σB | 2.8 ± 0.6 nm | Gating-spring noise |
| Λ90 | 156 ± 50 nm | Operational range of transduction |
| D | 23 ± 7 nm | Conformational swing of the channel |
| Z | 174 ± 60 fN | Gating force |
| Ks | 7.4 ± 1.0 μN/m | Gating-spring constant |
| Kch(X) | μN/m | Stiffness of a single gating-spring-channel complex |
| Kgc(X) | μN/m | Gating compliance |
| Kngc(X) | Gating compliance normalized to Ks |
Values in the second column, when given, were obtained from fitting the two-state gating-spring model to the measured data (n = 11).