EOG video eye motion data time correlation for Spacelab vestibular studies

The Microgravity Vestibular Investigations (MVI) is a NASA-sponsored Spacelab experiment designed to examine some aspects of the individual performance and interaction of the visual and vestibular systems in a microgravity environment. The MVI experiment system records eye movements by combining an analog video-camera image of the subject´s eye motion with digitally sampled experiment data, including horizontal and vertical electrooculography (EOG), overlaid on the camera image active video region. This format allows for the concurrent image processing of the experiment and camera data. The digital data field contains special features to allow automated stripping of the data from the image and subsequent storage in time-ordered bins. This allows the separately processed eye-motion video data to be time locked to the digital data, more accurately correlating EOG and video records of eye motion.<>