Takahashi M, Okada Y, Saito A, Takei Y, Tomizawa I, Uyama K, Takeuti I, Kanzaki J
Department of Otolaryngology, Keio University School of Medicine, Tokyo, Japan.
J Vestib Res. 1990;1(3):215-22.
To clarify the factors causing oscillopsia, we investigated head movement, gaze stability, and perception under various situations. High-frequency head movements, whether they were horizontal rotations or passively induced vertical oscillations, produced blurred vision and gaze fluctuations in patients with labyrinthine loss. However, this sensation differed from the oscillopsia perceived during walking, as it did not involve a sensation of oscillation of the surrounding space or a loss of body balance. Although patients with labyrinthine loss showed large irregular head perturbations during stepping, the resultant retinal velocity slips seemed too small to explain oscillopsia. Walking while wearing horizontal reversing prisms produced loss of spatial orientation, dysequilibrium, and instability of vision in normal subjects, which resembled the symptoms found in patients with oscillopsia. The present study suggests that oscillopsia represents a perceptual inability to detect spatial orientation during head or body movements rather than a mere blurring of vision caused by deficient compensation.
为了阐明引起视振荡的因素，我们研究了各种情况下的头部运动、注视稳定性和感知情况。高频头部运动，无论是水平旋转还是被动诱发的垂直振荡，都会在迷路性听力损失患者中产生视力模糊和注视波动。然而，这种感觉与行走时所感知到的视振荡不同，因为它不涉及周围空间的振荡感或身体平衡的丧失。尽管迷路性听力损失患者在行走时表现出较大的不规则头部扰动，但由此产生的视网膜速度滑移似乎太小，无法解释视振荡。在正常受试者中，佩戴水平反转棱镜行走会导致空间定向丧失、失衡和视力不稳定，这与视振荡患者的症状相似。本研究表明，视振荡代表了在头部或身体运动过程中检测空间定向的感知能力不足，而不仅仅是由补偿不足引起的单纯视力模糊。
