[Monopolar needle stimulation--improvement of motor neuron stimulation]

The application of an isolated punctiform stimulation with a needle electrode using the opposite large-surface electrode as an anode makes it possible to study the whole peripheral nerve including the nerve root after its exit from the spinal canal electroneurographically. This method enables the determination of nerve conduction speeds even over short nerve distances in a more exact way. The simultaneous stimulation of nearby nervous structures, which is frequently observed when surface electrodes are used, can be avoided.