Somatosensory evoked potentials by tibial nerve stimulation in the rabbit

Somatosensory evoked potentials by tibial nerve stimulation were obtained in ten New Zealand rabbits. The subcortical or cortical source of the three negative and three positive peaks present in the first 55 ms is discussed viewing the results obtained by different surface electrode locations and by stereotaxic recordings. The authors report interanimal, interhemispheric and test-retest variability of latencies and amplitudes of subcortical and cortical components.