The Hand Sees Visual Periphery Better Than the Eye: Motor-Dependent Visual Motion Analyses
The Hand Sees Visual Periphery Better Than the Eye: Motor-Dependent Visual Motion Analyses
复制标题
DOI：
10.1523/jneurosci.4741-12.2013
复制
发表时间：
2013-10-16
影响因子：
5.3
通讯作者：
Shimojo, Shinsuke
中科院分区：
文献类型：
--
作者：
Gomi, Hiroaki;Abekawa, Naotoshi;Shimojo, Shinsuke
与视觉运动有关的信息不仅用于大脑的有意识感知，还用于各种运动控制。相反，越来越多的证据支持视觉处理的动作与知觉的分离，它是不太清楚的视觉输入的分析是否共享的特征，需要不同类型的互动与环境的各种运动输出。在这里，我们表明，在人类视觉控制，运动分析快速手控制是不同的，从快速眼控制的时空分析和空间整合。由视觉运动刺激引起的内隐和快速手和眼反应的幅度随刺激大小和图案平滑度而不同（例如，例如，在一个实施例中，空间频率）。令人惊讶的是，手的反应并没有减少，即使当视觉运动与粗糙的图案主要是闭塞的视觉中心，而眼睛的反应显着下降。由于这些对比不能归因于运动动力学的任何差异，它们清楚地表明了个体运动系统的视觉运动的不同空间整合。反对过于统一的视觉分析的层次视图，我们的数据表明，视觉运动分析是单独定制的，从早期水平到个人的运动模式。也就是说，手和眼睛看到的外部世界是不同的。
Information pertaining to visual motion is used in the brain not only for conscious perception but also for various kinds of motor controls. In contrast to the increasing amount of evidence supporting the dissociation of visual processing for action versus perception, it is less clear whether the analysis of visual input is shared for characterizing various motor outputs, which require different kinds of interactions with environments. Here we show that, in human visuomotor control, motion analysis for quick hand control is distinct from that for quick eye control in terms of spatiotemporal analysis and spatial integration. The amplitudes of implicit and quick hand and eye responses induced by visual motion stimuli differently varied with stimulus size and pattern smoothness (e. g., spatial frequency). Surprisingly, the hand response did not decrease even when the visual motion with a coarse pattern was mostly occluded over the visual center, whereas the eye response markedly decreased. Since these contrasts cannot be ascribed to any difference in motor dynamics, they clearly indicate different spatial integration of visual motion for the individual motor systems. Going against the overly unified hierarchical view of visual analysis, our data suggest that visual motion analyses are separately tailored from early levels to individual motor modalities. Namely, the hand and eyes see the external world differently.