Median nerve somatosensory evoked potentials in medical students: Normative data.

In a study by Jung et al ., found that across the subjects, there were no significant correlations between indices of N20 and handedness.[ 14 ] Height shows some correlation (0.60) with N20 onset latency [ Table 3 ] and on multiple regression [ Table 4 ] showed a significance of 0.0478 ( P < 0.05), which is secondary to highly significant correlation of N20 onset latency with limb length, since limb length and height are significantly correlated.[ 15 ] Accurate interpretation of SSEP latencies require that normative standards must take into account the physiological variables.[ 16 ] SSEPs are different from Visual Evoked Potentials (VEPs) and Brainstem evoked response audiometry (BERA) in that peripheral conduction of somatosensory impulse constitutes a large portion of the total impulse propagation to the recording site.

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