Table 2 Reported side effects for each experimental condition. The numbers indicate the amount of participants reporting a particular side effect in the according condition. Rows are ordered by the summed occurrence across all conditions. Only side effects with a summed occurrence of at least ten were considered
condition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
amplitude (%) | frequency (Hz) | pulse width (µs) | |||||||
OFF | 33 | 66 | 100 | 30 | 85 | 130 | 40 | 90 | |
uneasiness/insecurity | 15 | 9 | 10 | - | 6 | - | 2 | 10 | 11 |
fatigue | 4 | 7 | 5 | - | 10 | - | - | 5 | 6 |
tremor | 9 | 3 | 3 | - | 4 | 1 | 1 | 5 | 1 |
rigidity | 8 | 4 | 1 | - | 4 | - | - | 4 | 4 |
speech disturbance | 2 | 3 | - | 1 | 3 | 1 | 1 | 3 | 5 |
difficulty concentrating | 7 | 2 | - | - | 2 | - | - | 1 | 4 |
instability | 4 | 2 | 1 | - | 3 | - | 2 | 3 | - |
paresthesia | 2 | 2 | 1 | - | - | 1 | - | 2 | 4 |
pain | 1 | 1 | 1 | - | - | - | - | - | 9 |
muscle cramps | - | - | 3 | 1 | - | - | - | 2 | 4 |