Neurophysiological studies
| Patient 1 | Patient 2 | Normal | |||
|---|---|---|---|---|---|
| MNC | Ampl(mV) | 0.5 | 12.0 | ||
| Median | DL (ms) | 10.0 | 13.0 | ||
| CV (m/s) | 18.6 | 24.7 | |||
| Ampl(mV) | − | 8.0 | |||
| Ulnar | DL (ms) | − | 9.0 | ||
| CV (m/s) | − | 20.1 | |||
| Ampl(mV) | 1.0 | NE | |||
| Peroneal | DL (ms) | 8.7 | NE | ||
| CV (m/s) | 18.6 | NE | |||
| SNC | Ampl (μV) | 4.0 | NE | ||
| Sural | DL (ms) | 5.8 | NE | ||
| CV (m/s) | 26.0 | NE | |||
| SSEPS: | |||||
| Median | NE | NE | |||
| Tibial | NE | NE | |||
| VEPs: | |||||
| Right | Lat (ms) | 151.0 | 149.0 | P100 | <118.0 |
| Ampl (μV) | 14.7 | 6.4 | >7.0 | ||
| Left | Lat (ms) | 105.0 | 150.0 | ||
| Ampl (μV) | 17.9 | 5.4 | |||
| BAERs: | |||||
| Right | I (ms) | 1.66 | 1.66 | ||
| III (ms) | 3.80 | 4.07 | |||
| V (ms) | 5.56 | NE | I | <1.72 | |
| Left | I (ms) | 1.54 | 1.59 | I–III | <2.37 |
| III (ms) | 3.68 | 3.64 | I–V | <4.30 | |
| V (ms) | 5.48 | NE | |||
| MEPs: | |||||
| Thenar | PCT (ms) | 26.0 | 28.9 | <14.5 | |
| CCT (ms) | 15.0 | 32.8 | <10.0 | ||
| Tibial ant | PCT (ms) | 28.0 | NE | <15.4 | |
| CCT (ms) | 32.0 | NE | <18.0 |
MNC=Motor nerve conduction; SNC=sensory nerve conduction; Lat=latency; Ampl=amplitude; DL=distal latency; CV=conduction velocity; BAERs=waves I-III-V; VEPs=P100; MEPs=hand and leg muscles; PCT=peripheral conduction time; CCT=central conduction time; −=not performed; NE=not evoked.