...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Improving vision in adult amblyopia by perceptual learning
【24h】

Improving vision in adult amblyopia by perceptual learning

机译：通过知觉学习改善成人弱视的视力

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

Practicing certain visual tasks leads, as a result of a process termed "perceptual learning," to a significant improvement in performance. Learning is specific for basic stimulus features such as local orientation, retinal location, and eye of presentation, suggesting modification of neuronal processes at the primary visual cortex in adults. It is not known, however, whether such low-level learning affects higher-level visual tasks such as recognition. By systematic low-level training of an adult visual system malfunctioning as a result of abnormal development (leading to amblyopia) of the primary visual cortex during the "critical period," we show here that induction of low-level changes might yield significant perceptual benefits that transfer to higher visual tasks. The training procedure resulted in a 2-fold improvement in contrast sensitivity and in letter-recognition tasks. These findings demonstrate that perceptual learning can improve basic representations within an adult visual system that did not develop during,the critical period.
机译：作为称为“知觉学习”的过程的结果，练习某些视觉任务会导致性能的显着提高。学习是针对基本刺激功能（例如局部方向，视网膜位置和呈现眼）的特定功能，这表明成年人初级视觉皮层的神经元过程发生了改变。但是，这种低级学习是否会影响诸如识别之类的高级视觉任务，这一点尚不清楚。通过在“关键时期”内对由于初级视皮层异常发育（导致弱视）而导致的成人视觉系统进行系统的低水平培训，我们在这里表明，低水平变化的诱导可能会产生明显的感知益处转移到更高的视觉任务。训练过程使对比敏感度和字母识别任务提高了2倍。这些发现表明，知觉学习可以改善在关键时期未发育的成人视觉系统中的基本表征。

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