Norré M E, Vanuytrecht L
Acta Otorhinolaryngol Belg. 1983;37(5):687-96.
The test-procedure for visuo-vestibular interaction, used in this study, consists in the comparison of the results of a pure vestibular rotation test (V-test), a combined optokinetic and vestibular test (V + O-test) and an optokinetic test (OKN-test), the obtained nystagmus being elicited by a sinusoidal stimulus of 0.05 Hz and 120 degrees ampl. The evaluation of the symmetry in the obtained reactions allows us to distinguish different mechanisms in the achievement of compensation. In case of caloric asymmetry, the presence of an asymmetry in the V-test proves there is still a lack of sufficient compensation at the vestibular level. In some of them, also the V + O-test shows asymmetry, but in most of cases the latter test shows a symmetrical reaction, proving the efficiency of the substitutive interaction of the optokinetic mechanisms in the scope of compensation. In rather rare cases we find an asymmetry only in the V + O - test and then mostly associated with an asymmetry in vestibular tests, others than the V-test. An asymmetry in the OKN-test is mostly a repercussion of the vestibular asymmetry, detected in the other vetibular tests, and in case of a complete vestibular symmetry, it is an indication for central pathology. The diversity of the observed reaction patterns proves the complexity of the mechanisms for compensation in case of vestibular deficiency.
本研究中使用的视觉 - 前庭相互作用测试程序，包括比较纯前庭旋转测试（V测试）、视动与前庭联合测试（V + O测试）和视动测试（OKN测试）的结果，所获得的眼球震颤由0.05Hz和120度幅值的正弦刺激诱发。对所获得反应的对称性进行评估，使我们能够区分实现代偿的不同机制。在冷热不对称的情况下，V测试中存在不对称证明在前庭水平仍缺乏足够的代偿。其中一些情况下，V + O测试也显示不对称，但在大多数情况下，后一项测试显示对称反应，证明视动机制在代偿范围内的替代相互作用是有效的。在相当罕见的情况下，我们仅在V + O测试中发现不对称，且大多与V测试以外的其他前庭测试中的不对称相关。OKN测试中的不对称大多是在其他前庭测试中检测到的前庭不对称的反映，而在前庭完全对称的情况下，则表明存在中枢病变。观察到的反应模式的多样性证明了前庭功能不足时代偿机制的复杂性。
