• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Nature >A jitter after-effect reveals motion-based stabilization of vision.
【24h】

A jitter after-effect reveals motion-based stabilization of vision.

机译：抖动后遗症表明基于运动的视觉稳定。

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

A shaky hand holding a video camera invariably turns a treasured moment into an annoying, jittery momento. More recent consumer cameras thoughtfully offer stabilization mechanisms to compensate for our unsteady grip. Our eyes face a similar challenge in that they are constantly making small movements even when we try to maintain a fixed gaze. What should be substantial, distracting jitter passes completely unseen. Position changes from large eye movements (saccades) seem to be corrected on the basis of extraretinal signals such as the motor commands sent to the eye muscle, and the resulting motion responses seem to be simply switched off. But this approach is impracticable for incessant, small displacements, and here we describe a novel visual illusion that reveals a compensation mechanism based on visual motion signals. Observers were adapted to a patch of dynamic random noise and then viewed a larger pattern of static random noise. The static noise in the unadapted regions then appeared to 'jitter' coherently in random directions. Several observations indicate that this visual jitter directly reflects fixational eye movements. We propose a model that accounts for this illusion as well as the stability of the visual world during small and/or slow eye movements such as fixational drift, smooth pursuit and low-amplitude mechanical vibrations of the eyes.
机译：握着摄像机的摇晃的手总是将珍贵的时刻变成烦人的，动摇的时刻。较新的消费类相机深思熟虑地提供了稳定机制，以补偿我们不稳定的抓地力。我们的眼睛面临类似的挑战，因为即使我们试图保持固定的目光，它们也会不断做出微小的动作。真正的分散注意力的抖动完全看不到。眼睛大运动（扫视）引起的位置变化似乎是根据视网膜外信号（例如发送到眼部肌肉的运动命令）来纠正的，并且所产生的运动响应似乎被简单地关闭了。但是这种方法对于连续的小位移是不可行的，在这里我们描述了一种新颖的视觉错觉，它揭示了基于视觉运动信号的补偿机制。观察者适应了一块动态随机噪声，然后查看了更大的静态随机噪声模式。然后，自适应区域中的静态噪声会在随机方向上连贯地“抖动”。一些观察表明，这种视觉抖动直接反映了注视眼的运动。我们提出了一个模型，该模型考虑了这种错觉以及在小和/或慢速眼动（例如注视漂移，平滑追随和低幅机械振动）中视觉世界的稳定性。

著录项

  • 来源
    《Nature》 |1998年第6704期|P.798-801|共4页
  • 作者

    MurakamiI; CavanaghP;

  • 作者单位

    Department of Psychology, Harvard University, Cambridge, Massachusetts 02138, USA. ikuya;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 自然科学总论;
  • 关键词

    Afterimage; Motion Perception; 后象; 运动知觉;

    机译：Afterimage;Motion Perception;后象;运动知觉;

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