Visual perception of axes of head rotation.
Visual perception of axes of head rotation.
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DOI：
10.3389/fnbeh.2013.00011
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发表时间：
2013
影响因子：
3
通讯作者：
van den Berg AV
中科院分区：
文献类型：
--
作者：
Arnoldussen DM;Goossens J;van den Berg AV
自我运动的记录对于准确地在空间中导航是重要的。头部和眼睛相对于空间的运动分别通过前庭系统和光流来记录。在这里，我们解决三个问题的视觉登记的自转。(1)头中眼运动提供了由运动眼睛中的传感器和运动头部中的传感器接收的运动信号之间的链接。这些信号是如何组合成一个自我旋转感知的？我们结合光流的模拟向前和旋转运动的眼睛与不同水平的眼睛在头部旋转的固定头部。我们通过不同水平的头中眼追踪分离了模拟的注视旋转和头部旋转。我们发现感知旋转与模拟的头部旋转相匹配，而不是凝视旋转。这拒绝了依赖于注视线的旋转的感知自旋转的模型。相反，头中眼信号用于将指定场景相对于眼睛的旋转的光流的旋转信息转换为相对于头部的旋转。这表明，变换的视觉自旋转信号可能与前庭信号联合收割机。(2)转换后的视觉自旋转信号是否反映了半规管（SCC）的排列？之前，我们发现MST和V6+内的子区域响应于模拟头部旋转的速度。在这里，我们重新分析了这些血氧水平依赖性（BOLD）信号的存在的空间分离相关的轴的视觉模拟头部旋转，如已发现在各种动物的皮层下区域。相反，我们发现一个相当统一的BOLD响应模拟旋转沿着三个SCC轴。(3)我们调查了受试者对头部旋转轴方向的敏感性是否显示SCC轴特异性。我们发现，头部旋转的敏感性是相当均匀分布的，这表明在人类皮层，视觉前庭整合并没有安排到SCC框架。
Registration of ego-motion is important to accurately navigate through space. Movements of the head and eye relative to space are registered through the vestibular system and optical flow, respectively. Here, we address three questions concerning the visual registration of self-rotation. (1) Eye-in-head movements provide a link between the motion signals received by sensors in the moving eye and sensors in the moving head. How are these signals combined into an ego-rotation percept? We combined optic flow of simulated forward and rotational motion of the eye with different levels of eye-in-head rotation for a stationary head. We dissociated simulated gaze rotation and head rotation by different levels of eye-in-head pursuit. We found that perceived rotation matches simulated head- not gaze-rotation. This rejects a model for perceived self-rotation that relies on the rotation of the gaze line. Rather, eye-in-head signals serve to transform the optic flow's rotation information, that specifies rotation of the scene relative to the eye, into a rotation relative to the head. This suggests that transformed visual self-rotation signals may combine with vestibular signals. (2) Do transformed visual self-rotation signals reflect the arrangement of the semi-circular canals (SCC)? Previously, we found sub-regions within MST and V6+ that respond to the speed of the simulated head rotation. Here, we re-analyzed those Blood oxygenated level-dependent (BOLD) signals for the presence of a spatial dissociation related to the axes of visually simulated head rotation, such as have been found in sub-cortical regions of various animals. Contrary, we found a rather uniform BOLD response to simulated rotation along the three SCC axes. (3) We investigated if subject's sensitivity to the direction of the head rotation axis shows SCC axes specifcity. We found that sensitivity to head rotation is rather uniformly distributed, suggesting that in human cortex, visuo-vestibular integration is not arranged into the SCC frame.
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DOI：
10.1111/j.1749-6632.1999.tb09192.x
发表时间：
1999-01-01
期刊：
OTOLITH FUNCTION IN SPATIAL ORIENTATION AND MOVEMENT
影响因子：
--
作者：
Andersen, RA;Shenoy, KV;Crowell, JA
通讯作者：
Crowell, JA
DOI：
10.1073/pnas.1102984108
发表时间：
2011-07-12
影响因子：
11.1
作者：
Arnoldussen, David Mattijs;Goossens, Jeroen;van den Berg, Albert V.
通讯作者：
van den Berg, Albert V.
影响因子：
2.5
作者：
Dukelow, SP;DeSouza, JFX;Vilis, T
通讯作者：
Vilis, T
影响因子：
3.7
作者：
Britten, KH;van Wezel, RJA
通讯作者：
van Wezel, RJA
影响因子：
3.4
作者：
Bremmer, F;Duhamel, JR;Graf, W
通讯作者：
Graf, W