Fig. 3

Nerve conduction study showing A very low compound motor action potential (CMAP) of right ulnar nerve responses, B absent CMAP of the left fibular nerve responses, and C, D normal sensory nerve action potential (SNAP) of upper and lower-limb sensory nerve stimulation sampled from the sural and median nerve. O: onset of the wave. P: peak of the wave. T: terminal part of the wave