Saito A, Takahashi M, Okada Y, Takei Y, Takeuchi I, Kanzaki J
Department of Otolaryngology, Keio University School of Medicine, Tokyo, Japan.
Acta Otolaryngol Suppl. 1991;487:106-13. doi: 10.3109/00016489109130454.
Spatial gaze stability under active high-frequency head oscillations was investigated in 31 patients after acoustic neuroma surgery. Whereas gaze stability upon rotation to the intact side was excellent during the entire time course after surgery, rotation to the affected side produced marked gaze disturbance at frequencies higher than 1.0 Hz, and did not recover even several years after surgery. The maximal oscillation frequency decreased in the patient group. Oscillopsia, being found in 20% of the patients, showed little correlation with gain value or maximal oscillation frequency. Long-lasting disturbances of active head oscillation, gaze stability and perception after unilateral labyrinthine loss may indicate persistent asymmetry of spatial orientation during high-frequency head movements.
对31例听神经瘤术后患者在高频头部主动摆动时的空间注视稳定性进行了研究。术后整个过程中，向健侧旋转时的注视稳定性极佳，而向患侧旋转时，频率高于1.0Hz时会产生明显的注视干扰，甚至术后数年仍未恢复。患者组的最大摆动频率降低。20%的患者出现视振荡，其与增益值或最大摆动频率几乎没有相关性。单侧迷路丧失后，主动头部摆动、注视稳定性和感知的长期干扰可能表明高频头部运动期间空间定向持续不对称。
