Visual perception of radial sine-wave grating after the alcohol consumption

Authors

  • Melyssa Kellyane Cavalcanti Galdino Universidade Federal de Pernambuco
  • Liana Chaves Mendes Universidade Federal de Pernambuco
  • Jákina Guimarães Vieira Universidade Federal de Pernambuco
  • Maria Lúcia de Bustamante Simas Universidade Federal de Pernambuco
  • Natanael Antonio dos Santos Universidade Federal de Pernambuco

DOI:

https://doi.org/10.1590/S0103-65642011005000001

Keywords:

Visual perception, Contrast sensitivity, Alcohol consumption, Radial sine-wave grating

Abstract

The aim of this study was to compare the visual perception of contrast in adults with no alcohol intake, and after moderate consumption of alcohol by them - 0.09% Blood Alcohol Concentration (BAC), through the Contrast Sensitivity Function (CSF). Participated in the experiments five volunteers, aged 21-30 years, with normal or corrected visual acuity. To measure the CSF, we used radial sine-wave grating stimuli of frequencies of 0.25; 2 e 8 cycles per degree of visual angle. We used an experimental design or sketch, with repeated measures, and a forced-choice psychophysical method. The results showed significant effect of subjects (F4, 55 = 25,518; p < 0,001), of frequencies (F2, 110 = 172,288; p < 0,001), and of the interaction between frequencies versus conditions versus subjects (F8, 110 = 26,806; p < 0,001). This preliminary study suggests changes in CSF, related to moderate alcohol consumption.

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Published

2011-01-01

Issue

Vol. 22 No. 1 (2011): Dora Fix Ventura

Section

Original Articles

License

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How to Cite

Visual perception of radial sine-wave grating after the alcohol consumption. (2011). Psicologia USP, 22(1), 99-115. https://doi.org/10.1590/S0103-65642011005000001