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AmJCaseRep

The effects of longitudinal head dimension, gender and age on the result of visual evoked potentials

Stanisław Ulatowski, Wojciech Split

Med Sci Tech 2007; 48(3): RA189-193

ID: 881569

Available online:

Published: 2007-03-20


Introduction: The aim of this study is to determine the effects of longitudinal head dimension between the nasion and inion points on the result of VEPs in relation to gender and age. Material and methods: The investigations were carried out in 330 healthy persons aged between 21 and 60 years. The pattern reversal VEPs measurements were performed using the 36’ checks. The response potentials were recorded at the position Oz-Fz. The measurement of the nasion -inion distance was done using a craniometer. Results: The P100 latency became significantly elongated with age and was directly proportional to the head dimension between the nasion and inion points. The standardized P100 latency for 1 cm nasion-inion distance was longer in females than in males. The amplitude of the P100 was decreasing in the fifth and sixth decade of life in males,while no such dependence occurred in females. The mean P100 amplitude in all age ranges was higher in females than in males. Conclusions: The VEPs result is influenced by the head dimension between the nasion and inion points, gender, and age of the subjects. These factors should be taken into consideration in the evaluation of the VEPs result. (Clin Exp Med Lett 2007; 48(3):189-193

Keywords: visual evoked potentials, age, gender, head size



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