Static roll and the vestibulo-ocular reflex (VOR).
Static roll and the vestibulo-ocular reflex (VOR).
复制标题
静态滚动和前庭眼反射 (VOR)。
DOI：
10.1007/bf00228788
复制
发表时间：
1990
影响因子：
2
通讯作者：
Buettner,UW
中科院分区：
文献类型：
--
作者：
Hain,TC;Buettner,UW
我们测量了静态侧倾（滚转）的前庭眼反射（VOR）的增益和时间常数的影响，在5个正常受试者通过记录的水平和垂直分量的眼速度在空间旋转与头部直立或滚动到任何一方的地球垂直轴。垂直位VOR的时间常数为19.6 ±3.2s（平均值±标准差）。水平分量相对于头部的时间常数在30°滚转时为15.7±4.0s，在60°滚转时为12.7±2.7s。垂直分量相对于头部的时间常数在30°滚转时为11.0±1.4 s，在60°滚转时为7.5±1.6 s。水平VOR的增益相对于空间没有显着变化与滚转角，但一个小的空间垂直分量VOR出现在所有的旋转时，头部从直立滚离。这种非代偿性眼球震颤在旋转开始后17.0±4.7s达到最大值2-3°/s，然后衰减。这些数据表明，静态耳石输入调制半规管信号的中央存储，头水平和头垂直分量的VOR可以以不同的速率衰减。
We measured the effect of static lateral tilt (roll) on the gain and time constant of the vestibulo-ocular reflex (VOR) in five normal subjects by recording both the horizontal and vertical components of eye velocity in space for rotation about an earth vertical axis with the head either upright or rolled to either side. The time constant of the VOR in the upright position was 19.6 ±3.2s (mean ± standard deviation). The time constant of the horizontal component with respect to theheaddecreased to 15.7±4.0s for 30° roll and to 12.7±2.7s for 60° roll. The time constant of the vertical component with respect to the head was 11.0±1.4 s for 30° roll and 7.5±1.6 s for 60° roll. The gain of the horizontal VOR with respect tospacedid not vary significantly with roll angle but a small space-vertical component to the VOR appeared during all rotations when the head was rolled away from upright. This non-compensatory nystagmus built up to a maximum of 2–3°/s at 17.0±4.7s after the onset of rotation and then decayed. These data suggest that static otolith input modulates the central storage of semicircular canal signals, and that head-horizontal and head-vertical components of the VOR can decay at different rates.