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Visual Evoked Potentials: Normative Values and Gender Differences.

Ruby Sharma1, Sandeep Joshi2, K D Singh3

  • 1Assistant Professor, Department of Physiology, Gian Sagar Medical College And Hospital , Banur, Patiala, India .

Journal of Clinical and Diagnostic Research : JCDR
|September 23, 2015
PubMed
Summary
This summary is machine-generated.

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Gender significantly impacts visual evoked potentials (VEP) in healthy young adults. Males exhibit longer VEP latencies, while females show higher P100 wave amplitudes, suggesting sex-based differences in visual pathway function.

Area of Science:

  • Neuroscience
  • Ophthalmology
  • Physiology

Background:

  • Visual evoked potentials (VEP) assess visual pathway function.
  • Normal VEP response involves a P100 wave at ~100ms latency.
  • VEP can be influenced by age, sex, visual acuity, and pupil size.

Purpose of the Study:

  • Determine normative VEP values in healthy medical students.
  • Investigate the influence of sex and anthropometric parameters on VEP.

Main Methods:

  • 100 healthy medical students (50 male, 50 female, aged 17-20) participated.
  • Recorded VEP parameters: N70, P100, N155 latencies and P100 amplitude.
  • Measured anthropometric data: age, height, weight, BMI, BSA, head circumference.
Keywords:
AmplitudeP100 LatencyPattern ReversalVisual Pathway

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Main Results:

  • Males had significantly longer N70, P100, and N155 latencies than females.
  • Females exhibited higher P100 wave amplitude compared to males (both eyes).
  • No significant correlation found between VEP parameters and head circumference.

Conclusions:

  • Gender is a significant factor influencing VEP.
  • Observed gender differences in VEP may stem from anatomical or endocrinal variations.