Developmental changes of normal nerve conduction velocity in infancy

Maximal motor conduction velocity of ulnar, median and peroneal nerves has been studied in a group of healthy children ranging between 2 months and 5 years of age. At the age of 2 months, conduction velocity in the examined nerves is about half that recorded in the adult. It rapidly increases, particularly in the first three years of life and at 5 years of age it is still below that of the adult. These results are discussed in relationship to histochemical and biochemical data on maturation and development of the peripheral motor system