Table 3 Derived stimulation Parameters
From: Safety of long-term electrical peripheral nerve stimulation: review of the state of the art
| Label | Derivation | Parameter | Unit |
|---|---|---|---|
| c | \( \mathrm{I}/{\mathrm{I}}^{\hbox{'}} \) | Amplitude of stimulating and reversal phase ratio | unitless |
| O | \( \mathrm{S}/\mathrm{P} \) | Percentage of effective stimulation time | % |
| Q | I ∙ D | Charge of stimulating phase | nC |
| QD | \( \left(\mathrm{I}\bullet \mathrm{D}\right)/\mathrm{A} \) | Charge of stimulating phase per unit area | nC/cm2 |
| T | \( \mathrm{S}/\mathrm{P} \) | Train duration | s |
| wF | F ∙ O | Weighted frequency of effective stimulation | Hz |