Contrast sensitivity to sine-wave gratings of low spatial frequencies in children
The aim of this study was to measure contrast sensitivity function for spatial frequencies of 0.25, 0.5, 1.0 and 2.0 cycles per degree in children between the ages of 4 and 13. We measured the contrast thresholds of 60 participants (50 children and 10 young adults) using the psychophysical forced-ch...
| Autores: | , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2008 |
| País: | Brasil |
| Institución: | Pontifícia Universidade Católica de Campinas (PUC-CAMPINAS) |
| Repositorio: | Estudos de Psicologia (Campinas) |
| Idioma: | portugués |
| OAI Identifier: | oai:ojs.periodicos.puc-campinas.edu.br:article/6984 |
| Acceso en línea: | https://periodicos.puc-campinas.edu.br/estpsi/article/view/6984 |
| Access Level: | acceso abierto |
| Palabra clave: | Criança Percepção visual Sensibilidade ao contraste Child Visual perception Contrast sensitivity |
| Sumario: | The aim of this study was to measure contrast sensitivity function for spatial frequencies of 0.25, 0.5, 1.0 and 2.0 cycles per degree in children between the ages of 4 and 13. We measured the contrast thresholds of 60 participants (50 children and 10 young adults) using the psychophysical forced-choice method and low luminance levels. All subjects were free from anyidentifiable ocular disease and had normal acuity. Results showed that contrast sensitivity function, in children in the 4-5, 6-7, 8-9, 10-11 and 12-13 age ranges, improved significantly with age. The results also showed that, by 12-13 years of age, the contrast sensitivity function was similar to that of a young adult (19-22 years). These results suggest that thedevelopment of contrast sensitivity function for sine-wave grating at low luminance levels attains adult-like values by about 12-13 years of age. |
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