Egocentric action in early infancy: Spatial frames of reference for saccades
Egocentric action in early infancy: Spatial frames of reference for saccades
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DOI：
10.1111/j.1467-9280.1997.tb00416.x
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发表时间：
1997-05-01
影响因子：
8.2
通讯作者：
Johnson, MH
中科院分区：
文献类型：
--
作者：
Gilmore, RO;Johnson, MH
婴儿将联合收割机视觉（即，视网膜位置）和非视觉（眼睛或头部位置）空间信息涉及什么空间框架或参考框架影响早期视觉引导动作的问题。我们通过对4 ~ 6个月大的婴儿进行双步扫视范式的测试来探讨这个问题，该范式表明成年人将联合收割机视觉和眼睛位置信息结合到以自我为中心（以头部或躯干为中心）的扫视目标位置表示中。相比之下，我们的研究结果表明，婴儿在4个月大时依赖于一个简单的视网膜中心的代表，但到6个月时，更多地使用自我中心的代表来控制扫视规划。这种简单的感觉运动行为的视觉空间表征的变化可能是一般视觉空间处理的皮质回路成熟的指标。
The extent to which infants combine visual (i.e., retinal position) and nonvisual (eye or head position) spatial information in planning saccades relates to the issue of what spatial frame or frames of reference influence early visually guided action. We explored this question by testing infants from 4 to 6 months of age on the double-step saccade paradigm, which has shown that adults combine visual and eye position information into an egocentric (head- or trunk-centered) representation of saccade target locations. In contrast, our results imply that infants depend on a simple retinocentric representation at age 4 months, but by 6 months use egocentric representations more often to control saccade planning. Shifts in the representation of visual space for this simple sensorimotor behavior may index maturation in cortical circuitry devoted to visual spatial processing in general.