Nerve conduction in 58 patients with SCA3/MJD
| Controls (n=91) | SCA3 (n=58) | ||||||
|---|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | ||||
| m-NCV (m/s) | 46.7 | 3.0 | 45.1 | 4.4 | |||
| DL (ms) | 3.9 | 0.5 | 4.4 | 1.1 | |||
| CMAP (mV) | 23.0 | 6.9 | 16.4 | 7.6 | |||
| s-NCV (m/s) | 49.0 | 4.1 | 44.7 | 5.2 | |||
| SNAP (μV) | 17.8 | 7.5 | 6.7 | 4.7 | |||
SCA3/MJD=spinocerebellar ataxia type 3/Machado-Joseph disease; m-NCV=motor nerve conduction velocity (tibial nerve); DL=distal motor latency; CMAP=compound muscle action potential; s-NCV N sur=sensory nerve conduction velocity (sural nerve); SNAP=sensory nerve action potential.