The contrast sensitivity to distincts patterns in pre-school children

Authors

  • Valtenice de Cássia Rodrigues de Matos França Universidade Federal da Paraíba
  • Natanael Antonio dos Santos Universidade Federal da Paraíba

DOI:

https://doi.org/10.1590/S0103-863X2006000200010

Keywords:

contrast sensitivity, preschool children, spatial frequency, radial frequency, forced-choice staircase method

Abstract

In general the FSC is used to characterise the development of the visual perception of material by children. The aim of the present work was to mensure and compare contrast the sensitivity curves to differ then of the radical stimuly (FSCr) and sine-wave gratings (FSC) in pré-school children, usind the psychophysical method of choice-forced for radial and sine-wave gratings stimuli of 0.25; 0.5; 1 and 2 cpd in 4-5 yearold preschool children and young adults using the psychophysical forced-choice staircase method. Fifteen volunteers with corrected-to-normal visual acuity, five in each age range, participated in the experiments. The results showed that the sensitivity improves with the development and that in for all participants the sensitivity was higher for sine-wave gratings than the radial frequencies. These results suggest that the radial and the sine-wave gratings stimuli are processed by different visual areas.

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Published

2006-08-01

Issue

Vol. 16 No. 34 (2006)

Section

Empirical Research

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How to Cite

França, V. de C. R. de M., & Santos, N. A. dos. (2006). The contrast sensitivity to distincts patterns in pre-school children . Paidéia (Ribeirão Preto), 16(34), 225-228. https://doi.org/10.1590/S0103-863X2006000200010