Curio G, Grüsser O J
Exp Brain Res. 1985;58(2):294-304. doi: 10.1007/BF00235311.
Horizontal DC-electrooculograms were recorded in subjects rotating on a horizontal turntable sinusoidally at 0.1 Hz and 35 to 40 degrees amplitude. The subjects either fixated a stroboscopically illuminated vertically striped pattern (1.15 to 3.45 degrees period) rotating with the turntable or initiated Sigma-OKN before the rotation began and tried to maintain Sigma-OKN during rotation. In a third paradigm, interaction of vestibulo-ocular reflex (VOR) and Phi-OKN was studied. VOR-suppression by fixation was complete within the limits of EOG-recording precision (+/- 1 degree X s-1) for flash frequencies fs greater than 10 flashes X s-1. VOR-suppression decreased monotonically with fs between 10 and 1 flashes X s-1. A similar dependency on fs was found for VOR-suppression during Sigma- or Phi-OKN. Above 10 flashes X s-1 VOR-suppression remained incomplete; below 5 flashes X s-1 VOR-suppression was stronger with the Sigma-OKN paradigm than during fixation and depended on spatial frequency of the pattern. During sinewave rotation of the subject the perceived speed Vp of Sigma-movement correlated to the movement of gaze in space and not to the movement of the eye in head. In a control experiment with normal optokinetic stimulation, OKN-suppression by fixating a small flashing target was found to depend on fs in a similar way as VOR-suppression in the experiments described above.
在以0.1赫兹的频率和35至40度的振幅进行水平正弦旋转的水平转盘上旋转的受试者中记录水平直流电眼电图。受试者要么注视随转盘一起旋转的频闪照明垂直条纹图案（周期为1.15至3.45度），要么在旋转开始前启动西格玛视动性眼震（Sigma-OKN），并试图在旋转过程中保持西格玛视动性眼震。在第三种范式中，研究了前庭眼反射（VOR）和菲视动性眼震（Phi-OKN）的相互作用。对于大于10次闪光×秒-1的闪光频率fs，在眼电图记录精度（±1度×秒-1）范围内，注视对视前庭眼反射的抑制是完全的。在前庭眼反射抑制在10至1次闪光×秒-1之间随闪光频率fs单调下降。在前庭眼反射抑制在西格玛或菲视动性眼震期间也发现了对闪光频率fs的类似依赖性。高于10次闪光×秒-1时，前庭眼反射抑制仍不完全；低于5次闪光×秒-1时，西格玛视动性眼震范式下的前庭眼反射抑制比注视时更强，并且取决于图案的空间频率。在受试者正弦波旋转期间，西格玛运动的感知速度Vp与空间中注视的运动相关，而不是与头部中眼睛的运动相关。在正常视动刺激的对照实验中，发现通过注视一个小的闪光目标对视动性眼震的抑制与上述实验中前庭眼反射抑制的方式类似地取决于闪光频率fs。
