SciELO - Scientific Electronic Library Online

 
vol.47 número3Envolvimiento paterno a los 12 meses de vida del bebéEstilos parentales y desarrollo de funciones ejecutivas: estudio con niños de 3 y 6 años índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Revista

Articulo

Indicadores

Compartir


Psico

versión On-line ISSN 1980-8623

Resumen

GADELHA, Maria José Nunes et al. Effects of aging on visual contrast of sinusoidal gratings. Psico (Porto Alegre) [online]. 2016, vol.47, n.3, pp.209-215. ISSN 1980-8623.  https://doi.org/10.15448/1980-8623.2016.3.22748.

The aim of this study was to compare the behavior of the contrast sensitivity curve and older adults. We measured the CFS for vertical sinusoidal gratings using the psychophysical forced-choice method (2AFC). Participants were 18 volunteers aged 20-29 years old (M = 23.94, SD = 2.57), and 18 elderly aged 60-69 years old (M = 66.05, SD = 3.65) of both sexes. The ANOVA showed main effects between groups [F(1, 156) = 173.160; p < 0.001] and interaction between the frequencies and age [F(3,427) = 163.365; p < 0.001]. But the Bonferroni showed significant differences in all tested frequencies (p < 0.001). It was found that the standard curve CS is maintained with aging, with the lowest sensitivity is located at the extreme bow and greater sensitivity is near the center of the curve. Furthermore, is suggested changes in visual sense perceptual process throughout life.

Palabras clave : Psychophysical method; Perception; Visual contrast; Aging.

        · resumen en Español | Portugués     · texto en Portugués     · Portugués ( pdf )

 

Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons