Behavioral Differences in the Upper and Lower Visual Hemifields in Shape and Motion Perception
Behavioral Differences in the Upper and Lower Visual Hemifields in Shape and Motion Perception
复制标题
上下视觉半场在形状和运动感知方面的行为差异
DOI：
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发表时间：
2016
影响因子：
3
通讯作者：
T. Nef
中科院分区：
文献类型：
--
作者：
G. Zito;D. Cazzoli;R. Müri;U. Mosimann;T. Nef
已知知觉准确性受视野内刺激位置的影响。特别是，在运动和空间加工的下半场(VH)和物体和面部加工的上半场(VH)，它似乎得到了增强。这种不对称性的起源归因于整个视野中的注意偏差，以及视觉系统的功能组织。在这篇文章中，我们在视野的不同区域测试了内容依赖的知觉不对称。25名健康志愿者参与了这项研究。他们在视野的四个象限内进行了三项视觉测试，涉及对形状、方向和运动的感知。视觉测试结果表明，运动知觉下视野知觉准确性好于上视野，形状知觉上视野知觉准确性好于下视野。定向知觉没有表现出任何垂直偏向。左、右VHS比较无明显差异。视觉系统的功能组织似乎表明，分别负责运动和形状知觉的背侧和腹侧视流分别偏向于下VHS和上VHS。这种偏向取决于视觉信息的内容。
Perceptual accuracy is known to be influenced by stimuli location within the visual field. In particular, it seems to be enhanced in the lower visual hemifield (VH) for motion and space processing, and in the upper VH for object and face processing. The origins of such asymmetries are attributed to attentional biases across the visual field, and in the functional organization of the visual system. In this article, we tested content-dependent perceptual asymmetries in different regions of the visual field. Twenty-five healthy volunteers participated in this study. They performed three visual tests involving perception of shapes, orientation and motion, in the four quadrants of the visual field. The results of the visual tests showed that perceptual accuracy was better in the lower than in the upper visual field for motion perception, and better in the upper than in the lower visual field for shape perception. Orientation perception did not show any vertical bias. No difference was found when comparing right and left VHs. The functional organization of the visual system seems to indicate that the dorsal and the ventral visual streams, responsible for motion and shape perception, respectively, show a bias for the lower and upper VHs, respectively. Such a bias depends on the content of the visual information.
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猕猴单侧颞下皮层损伤后单侧视觉感知和学习缺陷。
DOI：
10.1093/cercor/bhh045
发表时间：
2004
期刊：
Cerebral cortex (New York, N.Y. : 1991)
影响因子：
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作者：
Merigan,WilliamH;Saunders,RichardC
通讯作者：
Saunders,RichardC
影响因子：
3.7
作者：
Kravitz, Dwight J.;Kriegeskorte, Nikolaus;Baker, Chris I.
通讯作者：
Baker, Chris I.
影响因子：
56.9
作者：
SERENO, MI;DALE, AM;TOOTELL, RBH
通讯作者：
TOOTELL, RBH
视觉运动适应过程中的眼手协调：半空间和关节协调的影响
影响因子：
2
作者：
Rentsch
通讯作者：
Rentsch