Early infant's use of visual feedback in voluntary reaching for a spatial target.

Early infant's use of visual feedback in voluntary reaching for a spatial target.
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DOI:
10.3389/fpsyg.2013.00520
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发表时间:
2013
影响因子:
3.8
通讯作者:
Teixeira LA
Teixeira LA
中科院分区:
心理学3区
文献类型:
--
作者:
Pogetti LS;de Souza RM;Tudella E;Teixeira LA

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婴儿在达到发病年龄时使用视觉反馈的能力一直存在争议。在这项研究中,我们评估了 5 个月大的孩子伸手拿玩具任务中的运动运动学,比较了全视野和视觉遮挡下首选手臂的运动。该比较是在连续的视觉遮挡时期进行的。结果分析表明,与全视觉相比,视觉遮挡会导致手臂向玩具移动的直线度降低。较长时间的闭塞并不会增强这种效果。这些结果为婴儿触手发育早期使用视觉反馈提供了初步证据。通过提出一种用于手动控制的反馈处理混合模式,重新权衡视觉和本体感觉的作用作为环境信息可用性的函数,对先前和当前的发现进行了协调。
Capacity of using visual feedback by infants at the age of reaching onset has been controversial. In this investigation we assessed movement kinematics in the task of reaching for a toy in 5-month-olds, comparing movements performed with the preferred arm under full vision versus visual occlusion. That comparison was made in consecutive periods of visual occlusion. Analysis of results revealed that visual occlusion led to decreased straightness of arm displacement toward the toy as compared to full vision. Longer periods of occlusion did not augment that effect. These results offer preliminary evidence for use of visual feedback early in infants' reaching development. Reconciliation of previous and current findings is made by proposing a hybrid mode of feedback processing for manual control reweighting the roles of vision and proprioception as a function of availability of environmental information.
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