Postural Perceptions and Eye Displacements Produced by a Resultant Vector Acting in the Median Sagittal Plane of the Head: II. Continuous Responses along the Y Axis with the Subject in a Vertical Position, Heading Centripetally and Centrifugally

Abstract

To confirm the observations made with the previously described centrifuge-test method (Brandt & Fluur, 1966 b), the following modifications were introduced in these experiments. (1) Only the changes along the Y axis were registered. (2) The resultant force presented was permitted to increase and then decrease without interruption at the same slow rate. (3) The subjects (inexperienced) were seated in the erect position, facing centrifugally or centripetally, and the IR-filmed eye was fixed on the target throughout the trials. (4) The apparent position of the observed indicator was obtained without the interference of any active movement of the eye.