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Walking on virtual tiles

Walking on virtual tiles. Adaptive augmented reality for aiding Parkinson patients Yoram Baram, Judith Aharon-Peretz, Yahalomit Simionvici, Lior Ron, Amir Baram. Background . Parkinson’s Disease causes severe gait disturbance Current medication (L-Dopa) helps, but has adverse effects

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Walking on virtual tiles

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  1. Walking on virtual tiles Adaptive augmented reality for aiding Parkinson patients Yoram Baram, Judith Aharon-Peretz, Yahalomit Simionvici, Lior Ron, Amir Baram

  2. Background • Parkinson’s Disease causes severe gait disturbance • Current medication (L-Dopa) helps, but has adverse effects • Visual cues help Parkinson patients to walk

  3. A Parkinson’s patient On On medication Off medication

  4. Walking on tiles

  5. Augmented reality in closed-loop We propose adaptive augmented reality – a virtual tiled floor that responds dynamically to the patient’s own motions Patient dynamics: • forward • sideways • turns • head motions • tremor

  6. Apparatus We have developed a device comprising: • Head and body mounted accelerometers • See-through head-mounted display • Digital processor • Software that creates the desired augmented reality

  7. Open and closed loop systems motor system image generator motion eyes display motor system image generator motion eyes display motion sensor adaptive filter

  8. Medical experiments • Performed at the Movement Disorders Clinic of Rambam Medical Center in Haifa, Israel • Compared patient performance with the visual display turned off and on and with open and closed loop systems • Patients 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

  9. Results Test reslts Display off Open loop Close loop 1 Close loop 2

  10. התפתחות התצוגה

  11. MicroOptical ClipOn Display

  12. התפתחות יחידת החישוב

  13. מערכת משוב רפואי

  14. Conclusion • Significant improvement in the walking abilities of Parkinson patients is facilitated by a portable device for creating an adaptive augmented reality of motion over tiles • Improvement parameters are similar to those obtained by medication and by brain surgery, without the adverse effects

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