[Motor segmental conduction times for extensor digitorum brevis muscle: method and normative values]

Electrical stimulation of the peroneal nerves (60 nerves) and magnetic stimulation of the roots (L5) and motor cortex were performed on 30 normal controls. The muscle responses and F wave (peripheral stimulation) were recorded from extensor digitorum brevis muscle (60 muscles). The parameters of examined potentials were measured and the central, root, peripheral motor conduction times, were estimated. The normative values were established as well as formulae of linear regression within the observed correlations with height. The method may be used for electrophysiological diagnosis of patients with motor pathway impairment on the different levels.