Parallel updating and weighting of multiple spatial maps for visual stability during whole body motion.
Parallel updating and weighting of multiple spatial maps for visual stability during whole body motion.
复制标题
多个空间图的并行更新和加权，以确保全身运动期间的视觉稳定性。
DOI：
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发表时间：
2015
影响因子：
2.5
通讯作者：
W. Medendorp
中科院分区：
文献类型：
--
作者：
J. Tramper;W. Medendorp
众所周知，大脑使用多个参考框架来编码空间信息，包括以眼睛为中心的框架和以身体为中心的框架。当我们在空间中移动身体时，这些内部表征不再与外部空间相匹配，除非它们被主动更新。大脑是否会并行更新多个空间表征，或者它是否将其更新机制限制在一个单一的参考框架中，从这个框架中构建其他表征，这仍然是一个悬而未决的问题。我们开发了一个最佳整合模型来模拟多个或单个参考帧中身体运动对视觉空间的更新。为了测试这个模型，我们设计了一个实验，在这个实验中，参与者必须记住一个简短的目标的位置，同时被平移。行为反应与使用以眼和身体为中心的表示的组合的模型一致，根据目标位置在每个参考帧中存储和更新的可靠性进行加权。我们的研究结果表明，大脑同时更新身体运动的多个空间表征。由于两种表示保持同步，因此它们可以最佳地组合，以提供比基于单帧更新机制更精确的空间视觉位置估计。
It is known that the brain uses multiple reference frames to code spatial information, including eye-centered and body-centered frames. When we move our body in space, these internal representations are no longer in register with external space, unless they are actively updated. Whether the brain updates multiple spatial representations in parallel, or whether it restricts its updating mechanisms to a single reference frame from which other representations are constructed, remains an open question. We developed an optimal integration model to simulate the updating of visual space across body motion in multiple or single reference frames. To test this model, we designed an experiment in which participants had to remember the location of a briefly presented target while being translated sideways. The behavioral responses were in agreement with a model that uses a combination of eye- and body-centered representations, weighted according to the reliability in which the target location is stored and updated in each reference frame. Our findings suggest that the brain simultaneously updates multiple spatial representations across body motion. Because both representations are kept in sync, they can be optimally combined to provide a more precise estimate of visual locations in space than based on single-frame updating mechanisms.
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影响因子：
2.5
作者：
GNADT, JW;MAYS, LE
通讯作者：
MAYS, LE
影响因子：
2.5
作者：
Mullette-Gillman, OA;Cohen, YE;Groh, JM
通讯作者：
Groh, JM
影响因子：
3.7
作者：
Mullette-Gillman, O'Dhaniel A.;Cohen, Yale E.;Groh, Jennifer M.
通讯作者：
Groh, Jennifer M.
影响因子：
56.9
作者：
ANDERSEN, RA;ESSICK, GK;SIEGEL, RM
通讯作者：
SIEGEL, RM