Guedry F E, Benson A J
Exp Brain Res. 1983;52(2):190-8. doi: 10.1007/BF00236627.
In order to explore interactive effects of voluntarily generated rotational stimuli on evoked vestibular responses, experiments were performed using a rotation chair in which the subject either controlled the angular motion by voluntary movement of his upper and lower limbs, or was passive-rotation being controlled by a servomotor and electromagnetic brake. In two experiments, carried out on 8 and 9 subjects respectively, it was found that cessation of sustained passive rotation by voluntary limb actions strongly suppressed the postrotational turning sensation but did not alter the evoked nystagmus. Limb movements that were directionally concordant with muscle torque in generating body rotation yielded arthrokinetic effects which augmented perrotational nystagmus and sustained the sensation of turning. The postrotational sensation of turning and postrotational nystagmus produced by voluntary cessation of active rotation were reduced relative to responses produced by passive turning and stopping. The Purkinje effect induced by postrotational head movements was similarly reduced following voluntary cessation of active rotation.
为了探究自主产生的旋转刺激对诱发前庭反应的交互作用，使用转椅进行了实验。在实验中，受试者要么通过上下肢的自主运动控制角运动，要么由伺服电机和电磁制动器控制进行被动旋转。分别对8名和9名受试者进行了两项实验，结果发现，通过自主肢体动作停止持续的被动旋转，可强烈抑制旋转后的转向感觉，但不会改变诱发的眼球震颤。在产生身体旋转时，与肌肉扭矩方向一致的肢体运动产生关节运动效应，增强了旋转性眼球震颤并维持了转向感觉。相对于被动旋转和停止所产生的反应，自主停止主动旋转所产生的旋转后转向感觉和旋转后眼球震颤有所减轻。主动旋转自主停止后，旋转后头运动诱发的浦肯野效应也同样减弱。
