Object-based attention in the primary visual cortex of the macaque monkey
Object-based attention in the primary visual cortex of the macaque monkey
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DOI：
10.1038/26475
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发表时间：
1998-09-24
期刊：
影响因子：
64.8
通讯作者：
Spekreijse, H
中科院分区：
文献类型：
--
作者：
Roelfsema, PR;Lamme, VAF;Spekreijse, H
典型的自然视觉场景包含许多对象，这些对象需要彼此隔离和背景。提出理论将负责这种隔离的过程分为守门和细心的系统（1,2）。竞争前系统将迅速弹出且在视野中平行地“弹出”的图像区域分离。在主要的视觉皮层中，增强了对忙碌选择的图像区域的响应（3-5）。当对象不会自动与图像的其余部分自动隔离时，募集了耗时的专注系统。在这里，我们研究了细心的选择是否也与经过训练以执行曲线追踪任务的猴子的大脑区域V1区域的发射率有关（6,7）。对于分散曲线引起的响应，即使两条曲线相互交叉，相对于目标曲线的各个段的神经元反应也相对于响应而同时增强。这表明基于对象的注意与在视觉皮质处理层次结构最早级别的响应增强有关。
Typical natural visual scenes contain many objects, which need to be segregated from each other and from the background. Present theories subdivide the processes responsible for this segregation into a pre-attentive and attentive system(1,2). The pre-attentive system segregates image regions that 'pop out' rapidly and in parallel across the visual field. In the primary visual cortex, responses to pre-attentively selected image regions are enhanced(3-5). When objects do not segregate automatically from the rest of the image, the time-consuming attentive system is recruited. Here we investigate whether attentive selection is also associated with a modulation of firing rates in area V1 of the brain in monkeys trained to perform a curve-tracing task(6,7). Neuronal responses to the various segments of a target curve were simultaneously enhanced relative to responses evoked by a distracter curve, even if the two curves crossed each other. This indicates that object-based attention is associated with a response enhancement at the earliest level of the visual cortical processing hierarchy.