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Ohm(1921)首先描述了视动后眼震(Optokinetic after-nystagmus,OKAN)。只要视动性眼震(OKN)视靶刺激持续时间够长,并消除视固定的影响和保持警觉状态,OKAN就能持续一定时间。在童年患脑膜炎所致的双侧迷路功能丧失者,OKAN明显减弱或缺失。设想左向、右向的OKAN分别由不耦合的神经径路产生,故单侧迷路功能受损时,OKAN应是左/右不对称。作者们对前庭功能正常、双侧前庭功能受损和单侧前庭功能全部或部分受损三种情况的受试
Ohm (1921) first described OKokinetic after-nystagmus (OKAN). OKAN can last for a period of time as long as OKN stabilizes the duration of the target stimulus and eliminates the effects of immobility and alertness. In childhood suffering from meningitis caused by bilateral loss of lost function, OKAN significantly weakened or missing. It is assumed that left and right OKAN are respectively generated by uncoupled nerve pathways, so OKAN should be left / right asymmetry when the unilateral labyrinth function is impaired. The authors tested three cases of normal vestibular function, impaired bilateral vestibular function and unilateral vestibular function in whole or in part