Visual control of reaching and grasping in infants
Visual control of reaching and grasping in infants
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DOI：
10.1037/0012-1649.35.3.620
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发表时间：
1999-05-01
影响因子：
4
通讯作者：
Ashmead, DH
中科院分区：
文献类型：
--
作者：
McCarty, ME;Ashmead, DH
视觉输入的作用，在达到和把握进行了评估，婴儿（5，7，9个月大）和成人组达到了一个照明的可怜的，有时在达到黑暗。在运输和把握的行为和运动学措施进行了评估。婴儿和成年人都可以完成对黑暗物体的伸手和抓握。然而，视觉是在到达时使用的对象仍然可见。婴儿接触物体的频率更高，当它仍然可见时，尽管他们有更长的持续时间和更多的运动单位。相反，成年人达到了。当物体保持可见时，在运输和抓取过程中更快、更精确。因此，连续的视觉对象是没有必要的，但当它是可用的，婴儿用它来接触的对象，而成年人用它来达到和把握更有效。
The role of visual input during reaching and grasping was evaluated,Groups of infants (5, 7, and 9 months old) and adults reached for an illuminated abject that sometimes darkened during the reach. Behavioral and kinematic measures were assessed during transport and grasp. Both infants and adults could complete a reach and grasp to a darkened object. However, vision was used during the reach when the object remained visible. Infants contacted the object more often when it remained visible,though they had longer durations and more movement units. In contrast, adults reached. faster and more precisely during transport and grasp when the object remained visible. Thus, continuous sight of the object was not necessary, but when it was available, infants used it for contacting the object whereas adults used it to reach and grasp more efficiently.