The tibial evoked potential in healthy children and adolescents: normal values]

The somatosensory evoked cortical potentials were investigated for 35 healthy children (17 boys, 18 girls) between 6 and 17. The stimulation of the N. tibialis was affected at the Malleolus medialis using surface electrodes; the derivation was likewise conducted according to the ten-twenty system using surface electrodes. Investigations carried out employing this methodology demonstrate that the SEP's of the N. tibialis from the N30 to the N70 are clearly measurable in the children. The N30, P40 and N50 could be presented with the smallest standard deviations and side differences. The latencies of N30 and P40 show significant dependencies on the height of the children. Influence of gender could be demonstrated more for the latency of the N30 in from of longer latencies in boys that in girls which were independent of body size.