Armstrong Vickie, Maurer Daphne, Lewis Terri L
Department of Psychology, Neuroscience & Behaviour, McMaster University, Hamilton, Ontario, Canada L8S 4K1.
Vision Res. 2009 Nov;49(23):2774-81. doi: 10.1016/j.visres.2009.08.016. Epub 2009 Aug 20.
We compared the sensitivity of adults and children aged 3-10 years to first- and second-order motion and form. For first-order stimuli, at all ages sensitivity was better for motion than form, and motion thresholds were better at 6 Hz than at 1.5 Hz. For second-order stimuli, at all ages sensitivity was better for form than motion, and motion thresholds were better at 0.25 cyc/deg than at 1 cyc/deg. Thresholds became adult-like later for motion than for form and later for first-order than second-order stimuli. For first-order stimuli, the changes with age were larger and more protracted.
我们比较了成年人与3至10岁儿童对一阶和二阶运动及形状的敏感度。对于一阶刺激，在所有年龄段，对运动的敏感度均高于形状，且在6赫兹时的运动阈值优于1.5赫兹时的。对于二阶刺激，在所有年龄段，对形状的敏感度高于运动，且在0.25周/度时的运动阈值优于1周/度时的。运动阈值达到成人水平的时间比形状阈值晚，且一阶刺激达到成人水平的时间比二阶刺激晚。对于一阶刺激，随年龄的变化更大且更持久。
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