Abstract

There are various ways of recording the eyeball position with respect to the head. If it is required to record the eyeball position with respect to the visual field, and thus to know the viewpoint at which the gaze is being directed, then the movements of the head and body, which displace the head datum-line with respect to the visual field, must be prevented or allowed for. Prevention satisfactorily permits static eye viewpoint recording. A practical trial is described of a method of allowing for head and body movements and thus providing mobile eye viewpoint recording. A motion picture or television camera upon the head records the immediate visual field, and the viewpoint is marked by a superimposed white spot from the eyeball position recording apparatus. The records analyzed cast some doubt on the usually accepted latency of coordinate compensatory eye movements.

© 1960 Optical Society of America

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