The lateral occipital complex subserves the perceptual persistence of motion-defined groupings
The lateral occipital complex subserves the perceptual persistence of motion-defined groupings
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DOI：
10.1093/cercor/13.7.716
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发表时间：
2003-07-01
期刊：
影响因子：
3.7
通讯作者：
Vilis, T
中科院分区：
文献类型：
--
作者：
Ferber, S;Humphrey, GK;Vilis, T
视网膜信息的碎片是如何组合和整合形成我们所看到的连贯物体的？一个长期确立的原则是，作为一个群体移动的元素是联系在一起的。例如，一个物体的支离破碎的线条画，放在随机分布的短线背景上，可能是不可能看到的。但是如果物体相对于背景移动，它的形状会立即被识别出来。即使在运动停止之后，物体的感觉也会短暂地存在，然后消失在随机线条的背景中。对客体的记忆在大脑的什么地方持续存在？使用功能性脑成像，我们发现这种移动的线条画激活了运动敏感区（内侧颞叶复合体，MT+）和对象敏感区（外侧枕叶复合体，ESTA）。然而，在运动停止后，只有运动者保持其活动，而运动者则继续存在。显然，由像MT+这样的运动敏感区域组装的记忆体可以至少短暂地储存在大脑中。
How are the bits and pieces of retinal information assembled and integrated to form the coherent objects that we see? One long-established principle is that elements that move as a group are linked together. For instance a fragmented line-drawing of an object, placed on a background of randomly distributed short lines, can be impossible to see. But if the object moves relative to the background, its shape is instantly recognized. Even after the motion stops, the percept of the object persists briefly before it fades into the background of random lines. Where in the brain does the percept of the object persist? Using functional brain imaging, we found that such moving line-drawings activated both motion-sensitive areas (medial temporal complex, MT+) and object-sensitive areas (lateral occipital complex, LOC). However, after the motion stopped only the LOC maintained its activity while the percept endured. Evidently a percept assembled by motion-sensitive areas like MT+ can be stored, at least briefly, in the LOC.