Development of gaze tracking of small and large objects
Development of gaze tracking of small and large objects
复制标题
小型和大型物体的视线跟踪的发展
作者：
K. Rosander;C. Hofsten
设计了一项纵向研究，以探讨平滑追踪(SP)和视动反应(OKR)之间的关系。测量了7到14周大的婴儿的眼睛和头部的运动。他们被放置在一个移动物体的前面，视角分别为2.5、5、7、14、21、28和35°。该物体沿水平路径正弦振动，频率为0.25赫兹，振幅为0.25°视角。研究发现，眼跳的数量取决于物体的大小：在6周龄和9周时，最小的物体的眼跳次数更多。随着年龄的增长，眼跳次数减少。综合眼动增益(平滑跟踪+眼跳)不随年龄变化，但对于6.5周组来说，较小物体的增益更高。流畅眼球跟踪的增益随年龄增长而增加，且与物体大小无关。总而言之，研究结果不支持OKR和SP这两个独立系统的概念，这两个系统分别处理小对象和大对象的眼睛跟踪。最后，观察到两个6.5周大的婴儿，他们使用了大量的头部运动，并没有抑制前庭-眼睛反应。
A longitudinal study was designed to address the relationships between the smooth pursuit (SP) and the optokinetic response (OKR). Eye and head movements were measured in infants between 7 and 14 weeks of age. They were placed in front of a moving object subtending visual angles of 2.5, 5, 7, 14, 21, 28, and 35°. The object oscillated sinusoidally along a horizontal path with a frequency of 0.25 Hz and an amplitude of ±25° visual angle. It was found that the number of saccades was dependent on object size: at 6 and 9 weeks of age there were more saccades for the smallest objects. With increasing age, the number of saccades decreased. The composite eye movement gain (smooth tracking + saccades) did not change with age but for the 6.5-week group the gain was higher for smaller objects. The gain of the smooth eye tracking increased with age and showed no dependency on object size. In conclusion, the results do not support the concept of two separate systems, the OKR and the SP, each of them processing eye tracking of small and large objects. Finally, it was observed that two infants at 6.5 weeks of age who used considerable head movements did not inhibit the vestibular-ocular response.
婴儿注意力和追踪追踪的顺利发展。
DOI：
10.1037//0012-1649.35.3.856
发表时间：
1999
期刊：
Developmental psychology.
影响因子：
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作者：
Richards,JE;Holley,FB
通讯作者：
Holley,FB