Dai M J, Curthoys I S, Halmagyi G M
Department of Neurology, Royal Prince Alfred Hospital, Sydney N.S.W., Australia.
Biol Cybern. 1989;60(3):185-94. doi: 10.1007/BF00207286.
A new model of otolithic stimulation by linear acceleration is presented and compared to previous models, based upon anatomical evidence and on the ability of normal subjects to sense the direction of a linear acceleration vector acting in the coronal plane (roll-tilt perception). There are two basic methods of generating roll-tilt stimuli: 1) tilt-chairs either inside or outside a centrifuge and 2) fixed-chair centrifuges. The present model is based on consideration of the probable otoconial displacement produced by these two different methods of stimulation and the model incorporates a major role for the elastic restoring force of the otolith membrane. When this force is taken into account, and most previous models have ignored it, the model predicts that different patterns of otoconial displacement will be produced in tilt-chair and in fixed-chair centrifuge experiments. The different roll-tilt perception produced by these two methods may be caused by the different otoconial displacement patterns. It is suggested that the elastic restoring force of the otoconial membrane may contribute to space motion sickness.
本文提出了一种基于线性加速度的耳石刺激新模型，并将其与先前的模型进行比较，该模型基于解剖学证据以及正常受试者感知作用于冠状平面的线性加速度矢量方向（侧倾感知）的能力。产生侧倾刺激有两种基本方法：1）在离心机内部或外部使用倾斜椅，以及2）固定椅离心机。本模型基于对这两种不同刺激方法可能产生的耳石位移的考虑，并且该模型纳入了耳石膜弹性恢复力的主要作用。当考虑到这一力（而大多数先前的模型都忽略了它）时，该模型预测在倾斜椅和固定椅离心机实验中将产生不同的耳石位移模式。这两种方法产生的不同侧倾感知可能是由不同的耳石位移模式引起的。有人认为，耳石膜的弹性恢复力可能导致空间运动病。
