Decreased nerve conduction velocity Nerve conduction velocity is usually measured with surface electrodes placed on the skin over nerves at various locations. Following stimulation at one electrode, the speed at which the signal is propagated to other electrodes is recorded. Abnormal values may suggest demyelination, a conduction block, or axonopathy. HP:0000762 HP:0007218 HP:0007118 Slowed nerve conduction velocities Reduced nerve conduction velocities UMLS:C1857640 HP:0000761 Delayed nerve conduction velocity Decreased NCV A reduction in the speed at which electrical signals propagate along the axon of a neuron. Decreased nerve conduction velocities Slow nerve conduction velocity HP:0007231 Abnormal nervous system physiology