The processing of visual shape in the cerebral cortex of human and nonhuman primates: A functional magnetic resonance imaging study
The processing of visual shape in the cerebral cortex of human and nonhuman primates: A functional magnetic resonance imaging study
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DOI：
10.1523/jneurosci.3569-03.2004
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发表时间：
2004-03-10
影响因子：
5.3
通讯作者：
Orban, GA
中科院分区：
文献类型：
--
作者：
Denys, K;Vanduffel, W;Orban, GA
我们比较了人类和非人类灵长类动物的二维形状处理的神经基板，在清醒的主题使用功能性磁共振（MR）成像。通过观察对象的完整图像和杂乱图像诱发的MR活动的比较，揭示了人类和猕猴的枕叶、颞叶和顶叶皮层中的形状敏感区域。猴子顶叶内皮层比人类对二维形状的敏感性更高。在这两个物种中，干扰和刺激类型（灰度图像和图画）之间存在相互作用，但刺激类型的影响在猴子中比在人类中强得多。形状和运动敏感区域在一定程度上重叠。然而，这种重叠在人类中比在猴子中更明显。形状敏感区可以用来限制猴子对人类皮层的扭曲，并表明与猴子相比，人类的侧顶叶和上级颞叶皮层有很大的扩展。
We compared neural substrates of two-dimensional shape processing in human and nonhuman primates using functional magnetic resonance (MR) imaging in awake subjects. The comparison of MR activity evoked by viewing intact and scrambled images of objects revealed shape-sensitive regions in occipital, temporal, and parietal cortex of both humans and macaques. Intraparietal cortex in monkeys was relatively more two-dimensional shape sensitive than that of humans. In both species, there was an interaction between scrambling and type of stimuli (grayscale images and drawings), but the effect of stimulus type was much stronger in monkeys than in humans. Shape- and motion-sensitive regions overlapped to some degree. However, this overlap was much more marked in humans than in monkeys. The shape-sensitive regions can be used to constrain the warping of monkey to human cortex and suggest a large expansion of lateral parietal and superior temporal cortex in humans compared with monkeys.