Evaluation of contrast sensitivity among patients with migraine

Authors

  • Liana Chaves Mendes Universidade Federal de Pernambuco; Laboratório de Percepção Visual (LabVis)
  • Melyssa Kellyane Cavalcanti Galdino Universidade Federal de Pernambuco; Laboratório de Percepção Visual (LabVis)
  • Jákina Guimarães Vieira Universidade Federal de Pernambuco; Laboratório de Percepção Visual (LabVis)
  • Maria Lúcia de Bustamante Simas Universidade Federal de Pernambuco; Laboratório de Percepção Visual (LabVis)
  • Natanael Antonio dos Santos Universidade Federal da Paraíba; Departamento de Psicologia; Laboratório de Percepção, Neurociências e Comportamento (LPNeC)

DOI:

https://doi.org/10.1590/S0103-65642011005000010

Keywords:

Visual perception, Contrast sensitivity, Sinusoidal angular grid, Migraine

Abstract

In this work, the aim was to measure the Contrast Sensitivity Function (CSF) among patients with, and healthy volunteers without this pathology. The subjects of the tests were 12 female volunteers, aged 20-37 years - six of them with migraine, and six other ones without migraine. CSF measurements were performed using static visual stimuli of angular sine-wave gratings, with spatial frequencies of 2, 3, 4, 24 and 64 cycles/360º. Method used was the psychophysical one, with forced choice between two temporal alternatives, conditions of photopic luminance (screen average luminance of 41 cd/m²), and binocular vision with natural pupil. The results demonstrate that visual perception of contrast by the volunteers with migraine was lower in the frequencies of 2, 3, 4 and 64 cycles/360°. These preliminary findings suggest changes in the CSF related to this pathology.

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Published

2011-01-01

Issue

Section

Original Articles

How to Cite

Evaluation of contrast sensitivity among patients with migraine. (2011). Psicologia USP, 22(1), 81-97. https://doi.org/10.1590/S0103-65642011005000010