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
display
eyes
motor
system
image
generator
motion
display
eyes
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. קסדת טייסים

12. Virtual I-O Display

13. MicroOptical ClipOn Display

14. התפתחות יחידת החישוב

15. PC

16. Advantech PCM-5824

17. Compulab X86 Core

18. מערכת משוב רפואי

19. 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