Table 1.
Participants in the study and the individually-set levels of stimulation amplitude (mA) where the stimulation frequency was 50 Hz and with a pulse duration on 250 μs. The perception threshold (Level 1) is the just-noticeable stimulation amplitude. The pain threshold (Level 8) is when the amplitude is too high for the participant to endure. The stimulation amplitude chosen for this study (Level 3) is the amplitude that was considered to provide the participant with a distinct stimulation that was also comfortable for prolonged exposure.
| Participants | Perception Threshold (Level 1) | Stimulation (Level 3) | Pain Threshold (Level 8) |
|---|---|---|---|
| M1 | 3.2 | 5.1 | 10.0 |
| M2 | 2.2 | 3.9 | 8.0 |
| M3 | 2.8 | 3.4 | 5.0 |
| F1 | 3.0 | 5.0 | 10.0 |
| M4 | 3.1 | 5.1 | 10.0 |
| F2 | 2.1 | 3.8 | 8.0 |
| M5 | 1.3 | 2.1 | 4.0 |
| M6 | 2.3 | 4.2 | 9.0 |
| M7 | 2.3 | 3.4 | 6.0 |
| M8 | 1.7 | 3.8 | 9.0 |
| M9 | 2.0 | 4.0 | 9.0 |
| M10 | 3.5 | 4.8 | 8.0 |