A signal analysis method for retinal image velocity computation of vestibular-ocular reflex eye movement...

The vestibulo-ocular reflex preserves clear vision when the subject's head is moving rapidly. These eye movements are measured in order to investigate equilibrium diseases and disorders in otoneurology. The retinal image velocity is calculated to be a difference signal between the head movement velocity and the eye movement velocity. The eye movement position signal as well as the head movement position signal of the subject are concurrently measured when the subject is asked to move his head according to a stimulus and his gaze is fixated to a target. Eye movements are electro-oculographically recorded and head movements with a potentiometer. Tests performed to both patients of an equilibrium laboratory and normals exemplify that the method is applicable to indicate some otoneurological diseases.