• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of pediatric ophthalmology and strabismus >Suppression of vestibular nystagmus by forced convergence in normal human subjects.
【24h】

Suppression of vestibular nystagmus by forced convergence in normal human subjects.

机译：正常人体受试者中强制收敛抑制前庭眼球菌囊肿。

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

BACKGROUND: It has been suggested that the principal mechanism of nystagmus suppression in the nystagmus blockage syndrome is either adduction of the eye or convergence. We examined this issue using the nystagmus of the vestibulo-ocular reflex (VOR) as a model. METHODS: A motorized, computer-controlled rotary chair was used to produce VOR in darkness, using either sinusoidal or velocity step stimulation. Left eye position was monitored and horizontal slow-phase eye velocity was calculated. Subjects were cued to converge or perform other gaze tasks. RESULTS: Convergence suppressed nystagmus. With sinusoidal stimulation, nystagmus was nearly extinguished in extreme lateroversion, probably due to mechanical tethering of the eye. However, VOR gain suppression of 47% during convergence was observed even when the monitored eye was close to primary position. With velocity step stimulation, nystagmus was nearly extinguished at moderate angles of adduction. CONCLUSIONS: Convergence is sufficient to suppress nystagmus, without vision and without regard to whether the eye is adducted.
机译：背景：已经提示眼球菌梗阻综合征中的眼球菌抑制的主要机制是一种眼睛或收敛性。我们使用前视图（VOR）作为模型的眼球震颤检查此问题。方法：采用机动的计算机控制的旋转椅，用于使用正弦或速度步长刺激在黑暗中产生VOR。监测左眼位置，并计算水平慢相眼速度。受试者被融合或执行其他凝视任务。结果：收敛抑制了眼球震颤。凭借正弦刺激，眼球震颤几乎熄灭在极端的外侧，可能是由于眼睛的机械束缚。然而，即使当被监测的眼睛接近主要位置，也观察到在收敛过程中的VOR增益抑制47％。随着速度步骤刺激，眼球震颤几乎熄灭了中度的内膜角度。结论：收敛足以抑制眼球囊肿，而无需视野，并且不考虑眼睛是否有机。

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