Selected motor nerve conduction studies
| Motor nerve | DML (ms) | Amplitude (mV) | Minimum ‘F’ wave latency (ms) | Conduction velocity (m/s) | ||||||||
| C1 | C2 | NR | C1 | C2 | NR | C1 | C2 | NR | C1 | C2 | NR | |
| L facial (nasalis) | 5.01 | 5.01 | 2.5–3.2 | 1.0 | 1.47 | 1–2 | ||||||
| R facial (nasalis) | 4.58 | 4.28 | 1.0 | 1.7 | ||||||||
| R median (Abductor pollicis brevis) | 5.38 | 4.29 | 2.5–3.7 | 7.5 | 11.0 | ≥5 | 37.0 | 35.0 | 26–31 | 44.4 (forearm) | 41.7 (forearm) | ≥50 |
| L ulnar (Abductor digiti minimi) | 3.08 | 3.14 | 2.2–3.2 | 8.9 | 9.7 | ≥5 | 37.0 | 37.2 | 27–31 | 38.0 (forearm) | 44.0 (forearm) | ≥50 |
| R tibial (Abductor hallucis) | 9.05 | 4.04 | 3.2–4.5 | 5.2 | 6.2 | ≥3 | 78.1 | 56.8 | 48–56 | |||
| L common peroneal (Extensor digitorum brevis) | 6.99 | 5.25 | 3.8–5.5 | 2.3 | 6.7 | ≥2 | 70.9 | 55.6 | 47–55 | 31.0 (ankle–knee) | 41.9 (ankle–knee) | ≥40 |
C1 refers to case 1 studies done 2 weeks after the onset of symptoms, C2 refers to case 2 studies 10 days after the onset of symptoms. There were neither conduction blocks nor temporal dispersions.
NR, normal range.