The development of vernier acuity in human infants
The development of vernier acuity in human infants
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DOI：
10.1016/0042-6989(92)90211-z
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发表时间：
1991-03
期刊：
影响因子：
1.8
通讯作者：
J. Zanker;G. Mohn;U. Weber;Karin Zeitler-Driess;M. Fahle
中科院分区：
文献类型：
--
作者：
J. Zanker;G. Mohn;U. Weber;Karin Zeitler-Driess;M. Fahle
游标敏锐度，即检测线之间的小的未对准，比成年人中的周期性光栅的分辨率精细大约一个数量级。这种超敏通常归因于皮质机制，其发展的时间过程似乎与光栅分辨率的发展不同，光栅分辨率的发展可能受到视网膜因素的限制。我们调查了271名2个月至8岁的人类婴儿和儿童，使用基本相同的刺激和实验程序。游标目标的游标阈值与光栅分辨率进行了比较。优先观察实验导致以下结果：（i）游标敏锐度开始低于光栅分辨率。(ii)像光栅分辨率一样，游标敏锐度逐渐发展，但更快，更长;在5岁时，性能变得与成人相当。(iii)两侧边界无偏移，添加到游标目标在不同的距离，并没有影响阈值一致的距离和年龄组。
Vernier acuity, i.e. the detection of a small misalignment between lines, is about one order of magnitude finer than the resolution of periodic gratings in adult humans. This hyperacuity is generally attributed to cortical mechanisms, and the time-course of its development seems to differ from the development of grating resolution that probably is limited by retinal factors. We investigated 271 human infants and children between 2 months and 8 yr of age with essentially identical stimuli and experimental procedures. Vernier thresholds for Vernier targets were compared to grating resolution. The preferential looking experiments led to the following results:(i) Vernier acuity starts below grating resolution.(ii) Like grating resolution, Vernier acuity develops gradually, but more rapidly and longer; at the age of 5 yr performance becomes comparable to that of adults.(iii) Flanking borders without offset, added to the Vernier targets at various distances, did not affect thresholds consistently across distances and age groups.