• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Progress in brain research >On the feedback control of orienting gaze shifts made with eye and head movements.
【24h】

On the feedback control of orienting gaze shifts made with eye and head movements.

机译：在通过眼睛和头部运动进行定向注视移动的反馈控制上。

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Combined eye-head movements are routinely used to orient the visual axis (gaze) rapidly in space. The gaze control system can be modeled using a feedback system in which an internally created instantaneous gaze position error signal equivalent to the distance between the target and the current gaze position is used to drive brainstem eye and head motor circuits. The visual axis is driven until this gaze position error (GPE) is zero. The neural structure of the feedback system is discussed here. The midbrain's superior colliculus (SC) is implicated in gaze control but its 'location' in the feedback circuitry is debated. Our moving hill hypothesis proposed that the SC is within the feedback loop and that GPE is encoded topographically by a moving locus of activity on the motor map. In cat, fixation neurons of the superior colliculus encode GPE, which supports this model. Our preliminary evidence in both monkey and cat shows that neurons on the motor map respond to and encode, at very short latency, gaze shift perturbations. This further supports the hypothesis that the SC is within the gaze feedback loop.
机译：通常，组合使用眼头运动来在空间中快速定向视轴（凝视）。可以使用反馈系统对凝视控制系统进行建模，在该系统中，内部创建的瞬时凝视位置误差信号等于目标与当前凝视位置之间的距离，用于驱动脑干眼部和头部运动电路。驱动视轴，直到该凝视位置误差（GPE）为零。此处讨论了反馈系统的神经结构。中脑的上丘（SC）参与了视线控制，但它在反馈电路中的“位置”受到争议。我们的运动丘陵假说提出，SC在反馈回路内，而GPE由运动图上运动的运动轨迹在地形上编码。在猫中，上丘的固定神经元编码支持这种模型的GPE。我们在猴子和猫身上的初步证据表明，运动图上的神经元在很短的潜伏期就响应并编码了视线移动扰动。这进一步支持了SC在凝视反馈环路内的假设。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号