PDF(Pubmed)
Abstract：
Looking leads gaze to objects; seeing recognizes them. Visual crowding makes seeing difficult or impossible before looking brings objects to the fovea. Looking before seeing can be guided by saliency mechanisms in the primary visual cortex (V1). We have proposed that looking and seeing are mainly supported by peripheral and central vision, respectively. This proposal is tested in an observer with central vision loss due to macular degeneration, using a visual search task that can be accomplished solely through looking, but is actually impeded through seeing. The search target is an uniquely oriented, salient, bar among identically shaped bars. Each bar, including the target, is part of an \" \" X \" shape. The target\'s \" X is identical to, although rotated from, the other \" X \'s in the image, which normally causes confusion. However, this observer exhibits no such confusion, presumably because she cannot see the \" X \'s shape, but can look towards the target. This result demonstrates a critical dichotomy between central and peripheral vision.
摘要：
观察导致凝视物体；看到识别它们。视觉拥挤使观看困难或不可能，然后再将物体带到中央凹。观察之前可以通过初级视觉皮层（V1）的显着性机制来指导。我们提出，看和看主要由周边和中央视觉支持，分别。该建议在由于黄斑变性而导致中心视力丧失的观察者中进行了测试，使用可以仅通过查看来完成的视觉搜索任务，但实际上是通过观看而受到阻碍。搜索目标是一个独特的导向，显著，在形状相同的杆中的杆。每个酒吧,包括目标,是\"\"X\"形状的一部分。目标的“X”与，虽然从旋转，图像中的另一个“X”，这通常会造成混乱。然而,这个观察者没有表现出这种混乱，大概是因为她看不见X的形状，但可以朝目标看.该结果证明了中央视觉和周边视觉之间的关键二分法。
