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Single-subject counter-balanced design
| Participant | Condition | Condition | Condition |
|---|---|---|---|
| 1 | A (1.0 mA) | B (1.5 mA) | C (2.0 mA) |
| 2 | A (1.0 mA) | C (2.0 mA) | B (1.5 mA) |
| 3 | B (1.5 mA) | A (1.0 mA) | C (2.0 mA) |
| 4 | B (1.5 mA) | C (2.0 mA) | A (1.0 mA) |
| 5 | C (2.0 mA) | A (1.0 mA) | B (1.5 mA) |
| 6 | C (2.0 mA) | B (1.5 mA) | A (1.0 mA) |
| 7 | C (2.0 mA) | B (1.5 mA) | A (1.0 mA) |
