Visual motion processing in one-month-old infants: Habituation experiments
Visual motion processing in one-month-old infants: Habituation experiments
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一个月大婴儿的视觉运动处理：习惯实验
DOI：
10.1016/0042-6989(95)00237-5
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发表时间：
1996
期刊：
影响因子：
1.8
通讯作者：
J. Wattam
中科院分区：
文献类型：
--
作者：
J. Wattam
在婴儿控制习惯化实验中，研究了婴儿区分不同运动方向的能力。一组3 - 5周大的婴儿没有表现出对随机点模式和统一点模式的区别。随机点模式被划分成相反方向的区域，而统一点模式则是所有点都向同一方向移动。然而，在另外两种情况下，他们确实区分了隔离和均匀模式，这两种情况都不需要对方向的敏感性：在第一种情况下，隔离是基于连贯移动和静止点之间的对比，而在第二种情况下，对比是基于连贯和不连贯移动的点之间的对比。与年龄较小的婴儿不同，年龄稍大的6 - 8周大的婴儿在对比相反方向的运动时能够区分分离模式和均匀模式。这些结果证实并扩展了优先寻找的结果[Wattam-Bell， J.(1996)]。一个月大婴儿的运动加工：偏好注视实验。生物工程学报，2016,33 (2)；他们认为，方向歧视可能要到6-8周龄才会出现。6周之前明显缺乏方向辨别能力可能反映了无法使用方向线索来视觉分割隔离模式，而不是对方向不敏感。为了检验这一点，进一步测试了一组婴儿的绝对方向辨别能力。在向左和向右移动的均匀模式之间。然而，在这种情况下，3-5周和6 - 8周的婴儿都没有表现出任何歧视的证据，这表明方向歧视可能首先出现在相对运动中。讨论了可能的原因。
The ability of infants to discriminate between opposite directions of motion was examined in infant control habituation experiments. A group of 3–5-week-olds showed no evidence of discrimination between a random-dot pattern which was segregated into regions that moved in opposite directions, and a uniform pattern in which the dots all moved in the same direction. However, they did discriminate between segregated and uniform patterns in two additional conditions, neither of which required sensitivity to direction: in the first of these, segregation was based on the contrast between coherently moving and stationary dots, while in the second the contrast was between coherently and incoherently moving dots. Unlike the younger infants, a slightly older group of 6–8-weeks-olds proved capable of discriminating between the segregated and uniform patterns when the contrast was between opposite directions of motion. These results confirm and extend the results from preferential looking [Wattam-Bell, J. (1996). Motion processing in one-month-old infants: Preferential looking experiments. Vision Research, 36, 1671–1677]; they suggest that direction discrimination may not emerge until around 6–8 weeks of age. The apparent lack of direction discrimination before 6 weeks may reflect an inability to use directional cues to visually segment the segregated pattern, rather than an insensitivity to direction as such. To examine this, a further set of infants was tested for absolute direction discrimination—i.e., between leftwards- and rightwards-moving uniform patterns. However, in this case neither 3–5- nor 6–8-week-olds showed any evidence of discrimination, which suggests that direction discrimination may first emerge for relative motion. Possible reasons for this are discussed.
婴儿和婴儿内斜视的异常运动 VEP。
影响因子：
4.4
作者：
Norcia,AM;Garcia,H;Humphry,R;Holmes,A;Hamer,RD;Orel-Bixler,D
通讯作者：
Orel-Bixler,D