5 Augmented reality in closed-loop We propose adaptive augmented reality – a virtualtiled floor that responds dynamically to the patient’sown motionsPatient dynamics:forwardsidewaysturnshead motionstremor
6 Apparatus We have developed a device comprising: Head and body mounted accelerometersSee-through head-mounted displayDigital processorSoftwarethat creates the desired augmented reality
7 Open and closed loop systems motorsystemimagegeneratormotiondisplayeyesmotorsystemimagegeneratormotiondisplayeyesmotionsensoradaptivefilter
8 Medical experimentsPerformed at the Movement Disorders Clinic of Rambam Medical Center in Haifa, IsraelCompared patient performance with the visual display turned off and on and with open and closed loop systemsPatients were 12 hours off medication or in “off”Each experiment consisted of a patient walking a stretch of 10 meters 4 times. Last 2 times averaged
19 ConclusionSignificant improvement in the walking abilities of Parkinson patients is facilitated by a portable device for creating an adaptive augmented reality of motion over tilesImprovement parameters are similar to those obtained by medication and by brain surgery, without the adverse effects
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