After stimulation of the right median nerve in 20 normal adult volunteers interpeak latency N13-N20 and the difference in onset latency of the components N11-N20 are compared. A fractionation of the last measure was made at the onset of the P13-14 complex. The results concur with the ones in the literature, and it has been observed that all points measured could be obtained without significant difference on the C6-FZ and P3-FZ montages.
evoked potentials; somatosensory; median nerve; central conduction time