Taga Gentaro, Ikejiri Tomohiro, Tachibana Tatsushi, Shimojo Shinsuke, Soeda Atsuhiro, Takeuchi Keiko, Konishi Yukuo
Graduate School of Education, University of Tokyo, Japan.
Perception. 2002;31(3):273-86. doi: 10.1068/p3167.
How does the developing brain of the human infant solve the feature-binding problem when visual stimuli consisting of multiple colored objects are presented? A habituation--dishabituation procedure revealed that 1-month-old infants have the ability to discriminate changes in the conjunction of a familiar shape and color in two objects. However, this good earlier performance was followed by poorer performance at 2 months of age. The performance improved again at 3 months of age. Detailed analysis of the oculomotor behaviors revealed that the age of 2 months was a period of drastic transition when the tendency to stay with the fixated objects disappeared and repetitive saccades between the two objects emerged. Our findings suggest that the ability to perceive conjunctions of features is available to infants very early, that the perceptual/neural basis at 1 and at 3 months of age may be fundamentally different, and that feature integration by vigorous eye movements or selective attention may be the key functional difference between the age groups.
当呈现由多个彩色物体组成的视觉刺激时，人类婴儿发育中的大脑是如何解决特征绑定问题的？一项习惯化 - 去习惯化程序表明，1个月大的婴儿有能力辨别两个物体中熟悉形状和颜色组合的变化。然而，这种早期良好的表现之后是2个月大时较差的表现。3个月大时表现再次改善。对眼动行为的详细分析表明，2个月大是一个急剧转变的时期，此时停留在注视物体上的倾向消失，两个物体之间出现重复性扫视。我们的研究结果表明，婴儿很早就具备感知特征组合的能力，1个月和3个月大时的感知/神经基础可能存在根本差异，而通过剧烈眼动或选择性注意进行的特征整合可能是不同年龄组之间的关键功能差异。
