文章基本信息

标题：Sensibilidade ao contraste mesópica de crianças surdas para estímulos radiais e grades senoidais
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作者：Natanael Antonio Santos ; Jandilson Avelino Silva ; Caroline Costa Gomes Alencar 等
期刊名称：Psico
印刷版ISSN：0103-5371
电子版ISSN：1980-8623
出版年度：2009
卷号：40
期号：2
语种：Portuguese
出版社：Faculdade de Psicologia, Pontifícia Universidade Católica do Rio Grande do Sul
摘要：The aim of this work was to measure and compare mesopic contrast sensitivity curves for radial (rCSF) and sine-wave gratings (CSF) stimuli of 0.25, 0.5, 1 and 2 cpd in deaf children between the ages of 7 to 12 years. We measured the contrast thresholds of 10 children using the psychophysical forced-choice method and mean luminance of 0.7 cd/m2. All participants were free of ocular diseases and had normal acuity. The results showed that contrast sensitivity of the deaf children was higher for sine-wave gratings (CSF) than radial stimuli (rCSF). These results suggest that these two stimuli can be processed by different visual cortical areas.
关键词：percepção visual;sensibilidade ao contraste;crianças surdas;freqüência radial e espacial;método da escolha forçada.