The effort to close the gap: tracking the development of illusory contour processing from childhood to adulthood with high-density electrical mapping.
The effort to close the gap: tracking the development of illusory contour processing from childhood to adulthood with high-density electrical mapping.
复制标题
DOI：
10.1016/j.neuroimage.2013.12.029
复制
发表时间：
2014-04-15
期刊：
影响因子：
5.7
通讯作者：
Foxe JJ
中科院分区：
文献类型：
--
作者：
Altschuler TS;Molholm S;Butler JS;Mercier MR;Brandwein AB;Foxe JJ
当来自视网膜的低层次信息不完整时，成年人的视觉系统可以有效地填补缺失的物体边界，但人们对这些过程在童年时期是如何发展的知之甚少。十年的视觉诱发电位（VEP）的研究已经产生了一个理论模型，识别不同阶段的轮廓完成成人。第一个阶段称为感知阶段，发生在大约100-200 ms之间，与自动边界完成相关。第二个阶段被称为概念阶段，发生在230-400毫秒之间。后者与模糊物体的分析有关，似乎需要更多的努力才能完成。这两个阶段的电生理标记都被定位到枕叶外侧复合体，一组腹侧视觉流脑区域与对象处理相关。我们提出了Kanizsa型错觉轮廓刺激，通常用于探索轮廓完成过程，6-31岁的神经正常人（N= 63），而参数变化的空间范围，这些诱导轮廓，为了更好地了解如何填补过程中发展的儿童和青少年。我们的研究结果表明，虽然成年人完成轮廓边界在一个单一的离散期间在自动感知阶段，儿童显示一个不成熟的反应模式-在两个时间范围内从事更长的处理，似乎招募更广泛分布的区域，类似于那些在成人处理高阶模糊的数字。然而，5岁以上的儿童非常像成人，轮廓处理的效果是不变的轮廓范围的操作。
The adult human visual system can efficiently fill-in missing object boundaries when low-level information from the retina is incomplete, but little is known about how these processes develop across childhood. A decade of visual-evoked potential (VEP) studies has produced a theoretical model identifying distinct phases of contour completion in adults. The first, termed a perceptual phase, occurs from approximately 100-200 ms and is associated with automatic boundary completion. The second is termed a conceptual phase occurring between 230-400 ms. The latter has been associated with the analysis of ambiguous objects which seem to require more effort to complete. The electrophysiological markers of these phases have both been localized to the lateral occipital complex, a cluster of ventral visual stream brain regions associated with object-processing. We presented Kanizsa-type illusory contour stimuli, often used for exploring contour completion processes, to neurotypical persons ages 6-31 (N= 63), while parametrically varying the spatial extent of these induced contours, in order to better understand how filling-in processes develop across childhood and adolescence. Our results suggest that, while adults complete contour boundaries in a single discrete period during the automatic perceptual phase, children display an immature response pattern - engaging in more protracted processing across both timeframes and appearing to recruit more widely distributed regions which resemble those evoked during adult processing of higher-order ambiguous figures. However, children older than 5 years of age were remarkably like adults in that the effects of contour processing were invariant to manipulation of contour extent.
登录
查看更多内容
影响因子：
5.7
作者：
Altschuler, Ted S.;Molholm, Sophie;Russo, Natalie N.;Snyder, Adam C.;Brandwein, Alice B.;Blanco, Daniella;Foxe, John J.
通讯作者：
Foxe, John J.
影响因子：
56.9
作者：
CAREY, S;DIAMOND, R
通讯作者：
DIAMOND, R
影响因子：
2.7
作者：
Foxe, John J.;Strugstad, E. Cathrine;McCourt, Mark E.
通讯作者：
McCourt, Mark E.
影响因子：
2.7
作者：
Akhtari, M;Bryant, HC;Sutherling, WW
通讯作者：
Sutherling, WW
影响因子：
3.7
作者：
Csibra, G
通讯作者：
Csibra, G