Reply To: Why Does Recovery Take So Long?

cer100: “Axon loss: Amplitude of compound muscle action potential (CMAP) correlates with the number of motor nerve axons, and similarly, the amplitude of the sensory nerve action potential (SNAP) reflects the number of sensory nerve axons. Lesions causing axon loss generally result in reduced CMAP and SNAP amplitudes.”

CMAP and SNAP are diagnostic components of EMG/NCV testing.