Nagasaki Saurel Ralmach¹, Seck Lala Bouna¹, Dinga Boudzoumba Stane Steeven¹, Mualaba Célèbre²*, Mpung Mansoy Halladain¹, Katende Mbuyi Thierry¹, Ndiaye Moustapha¹ and Diop Amadou Gallo¹

¹Neurology Department at Fann Teaching Hospital, Senegal

*Corresponding Author: Mualaba Célèbre, Neurosurgery Department at Fann Teaching Hospital, Senegal.

Received: July 30, 2021; Published: November 29, 2021

Abstract

Introduction: Visual evoked potential (VEP) is the electrical response of the occipital cortex that is elicited by visual stimulation. They study macular and perimacular functioning as well as the conduction of visual pathways. They therefore contribute to the diagnosis of several diseases of the central nervous system such as Devic’s optic neuromyelitis and multiple sclerosis. Their standards vary from one laboratory to another due to the difference in conditions and stimulation materials. The objective of this study is to present the results of our laboratory comparative to others laboratories.

Materials and Methods: This was a prospective cross-sectional study that consisted in realizing the VEP of checkerboard at 60 minutes of arc in 50 people in apparent good health and free from eye disorders distributed equally between men and women and in the age group under 40 and 40 and over.

Results: P100 latency was 97.86 ± 4.37 msec in the right eye versus 97.92 ± 4.10 msec in the left eye in men and 94.63 ± 5.08 msec in the right eye versus 94.88 ± 4.87 msec in the left eye in women. Overall, it was 96.25 ± 4.97 msec in the right eye compared to 96.40 ± 4.71 msec in the left eye. The amplitude of P100 was 6.61 ± 3.28 μV on the right and 6.51 ± 3.10 μV overall. The amplitudes were greater and the latencies shorter in women.

VEP vary significantly depending on gender, height and weight. But there was no significant change in age and body mass index.

Conclusion: The normative values of the VEP in our study were close to those found in the literature. They vary with respect to sex and anthropometric parameters.

Keywords: Normative Values; VEP; Senegal

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Citation

Citation: Nagasaki Saurel Ralmach., et al. “Elaboration of Normative Values of Visual Evoked Potentials in the Neurophysiological Exploration Laboratory of the Neurology Department at Fann Teaching Hospital in 2020". Acta Scientific Neurology 4.12 (2021): 51-59.

Copyright

Copyright: © 2021 Nagasaki Saurel Ralmach., et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.