Human Aging and Photopic Contrast Sensitivity for Angular Frequencies
Keywords:
Visual perception, Contrast sensitivity, Human aging, Angular frequenciesAbstract
The aim of this study was to investigate the effect of aging on the sensitivity to angular frequencies in photopic luminance (42.6cd/m2). Contrast sensitivity curves were measured in eight adults, from 20 to 29 years old and eight elder people, from 60 to 70 years old by means of the forced-choice method. All subjects were free from identifiable ocular disease and had normal visual acuity. The results showed significant decline of the sensitivity of the older adults group to high and low frequencies. It was concluded that aging might affect the processing of high and low angular frequencies in photopic luminance conditions.
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References
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Simas, M. L. B., Santos, N. A., & Thiers, F. A. (1997). Contrast sensitivity to angular frequency stimuli is higher than that for sinewave gratings in the respective middle range. Brazilian Journals of Medical and Biological Research, 30, 633-636.
Wetherill, G. B., & Levitt H. (1965). Sequential estimation of points on a psychometric function. The British Journal of Mathematical and Statistical Psychology, 18, 1-10.
Burton, K. B., Owsley, C., & Sloane, M. E. (1993). Aging and neural spatial contrast sensitivity: Photopic vision. Vision Research, 33, 936-946.
Campbell, F. W., & Green, D. G. (1965). Optical and retinal factors affecting visual resolution. Journal of Physiology, 181, 576-593.
Campbell, F. W., & Robson, F. G. (1968). Application of the Fourier analysis to the visibility of gratings. Journal of Physiology, 197, 551-566.
Crassini, B., Brown, B., & Bowman, K. (1988). Age-related changes in contrast sensitivity in central and peripheral retina. Perception, 17, 315-332.
De Valois, R. L., & De Valois, K. K. (1988). Spatial vision. New York: Oxford University Press.
Fiorentini, A., Porciatti, V., Morrone, M. C., & Burr, D. C. (1996). Visual ageing: Unspecific decline of the responses to luminance and colour. Vision Research, 21, 3557-3566.
Gallant, J. L., Connor,C. E., Rakshit, S., Lewis, J. W., & Van Essen, D. C. (1996). Neural responses to polar, hyperbolic, and Cartesian gratings in area V4 of the macaque monkey. Journal of Neurophysiology, 76, 2718-2739.
Habak, C., & Faubert, J. (2000). Larger effect of aging on the perception of higher-order stimuli. Vision Research, 40, 943-950.
Higgins, K. E., Jaffe, M. J., Caruso, R. C., & deMonasterio, F. M. (1988). Spatial contrast sensitivity: Effects of age, test-restest and psychophysical method. Journal of the Optical Society of America A, 12, 2173-2180.
Nio, Y. K., Jansonius, N. M., Fidler, V., Geraghty, E., Norrby, S., & Kooijiman, A. C. (2000). Age-related changes of defocus-specific contrast sensitivity in healthy subjects. Ophtalmic and Physiological Optics, 20, 323-334.
Owsley, C., Sekuler, R., & Siemsen, D. (1983). Contrast sensitivity throughout adulthood. Vision Research, 23, 689-699.
Santos, N. A., Oliveira, A. B., Nogueira, R. M. T. B. L., Cruz, E. D. N., & Simas, M. L. B. (2007). Efeito da idade na percepção visual de grades senoidais em luminância baixa. Psicologia: Reflexão e Crítica, 19, 415-421.
Santos, N. A., & Simas M. L. B. (2001). Função de sensibilidade ao contraste: Indicador da percepção visual da forma e da resolução espacial. Psicologia: Reflexão e Crítica, 14, 589-597.
Santos, N. A., Simas, M. L. B., & Nogueira, R. M. T. B. L. (2003). Processamento visual da forma em idosos: curvas de limiar de contraste para frequências angulares e senoidais. Psicologia: Reflexão e Crítica, 16, 271-277.
Santos, N. A, Simas, M. L. B., & Nogueira, R. M. T. B. L. (2004). Comparison of angular frequency contrast sensitivity in young and older adults. Brazilian Journal of Medical and Biological Research, 37, 375-378.
Schefrin, B. E., Tregear, S. J., Harvey Jr, L. O., & Werner, J. S. (1999). Senescent changes in scotopic contrast sensitivity. Vision Research, 22, 3728-3736.
Simas, M. L. B. (1985) Linearity and domain invariance in the visual system. Tese de Doutorado, Queens University, Kingston.
Simas, M. L. B., & Dodwell, P. C. (1990). Angular frequency filtering: A basis for pattern decomposition. Spatial Vision, 5, 59-74.
Simas, M. L. B., Santos, N. A., & Thiers, F. A. (1997). Contrast sensitivity to angular frequency stimuli is higher than that for sinewave gratings in the respective middle range. Brazilian Journals of Medical and Biological Research, 30, 633-636.
Wetherill, G. B., & Levitt H. (1965). Sequential estimation of points on a psychometric function. The British Journal of Mathematical and Statistical Psychology, 18, 1-10.
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Published
2010-02-09
How to Cite
Costa, T. L., Lyra Nogueira, R. M. T. B., Pereira, A. G. F., Mousinho, S. H. R., Marques, M. M., & Santos, N. A. dos. (2010). Human Aging and Photopic Contrast Sensitivity for Angular Frequencies. Psicologia: Teoria E Pesquisa, 25(4), 589. Retrieved from https://periodicos.unb.br/index.php/revistaptp/article/view/17427
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Estudos Empíricos
