Mori S, Katayama N
Space Medicine Research Center, Research Institute of Environmental Medicine, Nagoya University, Nagoya, Japan.
Environ Med. 2001 Dec;45(1):20-2.
Velocity changes in the otolith-ocular reflex (OOR) during a step mode of lateral linear acceleration were examined by electrooculography (EOG) in 4 normal subjects. They were oscillated in darkness at a constant stimulus frequency of 0.175 Hz with 4 different G-levels between 0.2-0.4 G and at a constant G-level of 0.3 G with 4 different stimulus frequencies between 0.115-0.215 Hz. The OOR velocity was increased linearly by elevation of the G-level, though the increase varied considerably among subjects. On the other hand, changes in the stimulus frequency had minimal effect on the OOR velocity. The results indicate that the OOR response property is frequency-independent at a low stimulus-frequency range, even when the head was oscillated rectangularly instead of sinusoidally.
通过眼电图（EOG）对4名正常受试者在横向线性加速度的阶跃模式下耳石-眼反射（OOR）中的速度变化进行了检查。他们在黑暗中以0.175Hz的恒定刺激频率、0.2-0.4G之间的4种不同重力水平进行摆动，并以0.3G的恒定重力水平、0.115-0.215Hz之间的4种不同刺激频率进行摆动。尽管不同受试者之间的增加幅度差异很大，但随着重力水平的升高，OOR速度呈线性增加。另一方面，刺激频率的变化对OOR速度的影响最小。结果表明，即使头部以矩形而非正弦形式摆动，在低刺激频率范围内，OOR的反应特性也与频率无关。
