Inter and intraindividual variability of visual evoked potentials and their dependence on physiological parameters of subjects
Abstract
Testing of the influence of gender, age and physiological variations of glycemia on visual evoked potentials (VEPs) was the subject of my postgraduate studies. In the group of 70 healthy subjects with the age span of 6 - 60 years pattern-reversal VEPs and motion-VEPs were examined. - No differences were found in all VEP variants between sexes. - Latencies of the pattern-reversal VEPs with the age 6-10 years don't display significant changes compare with adults' findings. - The latency of M-VEPs (mainly to peripheral radial motion) exhibited the most significant correlation (linear) with age of adult subjects (6-18 years: correl. coeff. -0.85; 19-60 years: correl. coeff. 0.66) - This study proved a need for age related norms in M-VEP examination. - No differences of all VEPs parameters were found related to glycemia.
This means that VEP results interpretation in patients can be done without knowledge of the actual glycemia.