Somatosensory evoked potentials by median nerve stimulation recorded with cephalic and non-cephalic references. II). Reliability study.

Reliabilities of parameters of median nerve short-latency somatosensory, evoked potential obtained using both cephalic and non-cephalic references was measured in 20 healthy volunteers (aged 20-50 years) who repeated the recording session after one week. All latency measures and peak-to-peak times were highly reliable; amplitudes were less reliable. Upper normal test-retest variability limits of all the analyzed parameters were also computed.