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Electroencephalogram Control System

Electroencephalogram Control System. Dr. Boris Hyle Park BIEN 175A Group F Joseph Steven Fletcher Ryan Alan LaCroix Gary Matthew Stroup Kenneth Gerard Sugerman March 15, 2010. Purpose. Produce a two dimensional EEG controller for widespread application Mechanical arm

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Electroencephalogram Control System

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  1. Electroencephalogram Control System Dr. Boris Hyle Park BIEN 175A Group F Joseph Steven Fletcher Ryan Alan LaCroix Gary Matthew Stroup Kenneth Gerard Sugerman March 15, 2010

  2. Purpose • Produce a two dimensional EEG controller for widespread application • Mechanical arm • Hands free light for Dentist • Wheel Chair Adapted from www.toysrus.com Adapted from www.fotosearch.com/bthumb http://blogs.static.mentalfloss.com

  3. Specifications • Training Time • <15 minutes • Output • Continuous Signal • 25 ft control range • 2 independent axes • Off • Med • High • Off • Med • High

  4. Reverse Engineer Force Trainer and Mindflex Forcetrainer Disassemble Characterize Components Mindflex Disassemble Characterize Components Projected Completion date March 14, 2010 End of the Quarter Timeline

  5. Timeline • Determine Electrode Placement • Research possible locations • Test and analyze locations • Projected Completion Date • May 16, 2010 • Demonstration Device • Tank like RC Car • Mimic wheelchair control • Projected Completion Date • June 4, 2010 Adapted from www.toysrus.com

  6. Gantt Chart

  7. Consumer Products Force Trainer Mindflex Adapted from http://company.neurosky.com/products/ NeuroSky Circuitry from Force Trainer

  8. Overview http://www.ipmc.cnrs.fr Adapted from http://s4.hubimg.com/

  9. Fan Modulation Duty Cycle Oscillating Signal ~470 Hz DC Drift Peak Height Previous Results Fan Off Fan Medium Fan High

  10. Fan Modulation Duty Cycle Oscillating Signal ~470 Hz DC Drift Peak Height Previous Results Fan Off Fan Medium Fan High

  11. Design Specification Continuous Three levels Integrator Circuit Electronically performs integration RC Time constant Previous Results

  12. Previous Results • Design Specification • 1000ms Response time • 3 Levels of Control

  13. Continuous control Integrator DC Drift High Pass Filter Peak Height Threshold Circuit (Clamp) AC to DC Rectifier Solutions Fan Off Fan Medium Fan High

  14. Current Progress • Circuitry Design High Pass

  15. Overview http://www.ipmc.cnrs.fr Adapted from http://s4.hubimg.com/

  16. Current Progress • Damaged circuits in the Force Trainer • 2nd Force Trainer Components Analyzed without disassembly

  17. Current Progress • Used FGEN to input a sine wave • 45 Hz-300 Hz (5 Hz increments) • 10 mV amplitude • Summation Circuit

  18. Current Progress • Used FGEN to input a sine wave • 45 Hz-300 Hz (5 Hz increments) • 10 mV amplitude • Summation Circuit

  19. Overview http://www.ipmc.cnrs.fr Adapted from http://s4.hubimg.com/

  20. Current Progress http://www.ipmc.cnrs.fr

  21. Work Completed • Characterization of Mindflex and Force Trainer • Built and characterized an Integrator Circuit • Begun Work on Additional Circuit Components • Researched possible electrode placement • Analyzed Useable Signal Frequencies with a Function Generator

  22. Future Work • Continue design of a circuit to differentiate between medium and high signal • High Pass Filter • Threshold Circuit • Continue Troubleshooting of Circuit Components • Rectifier • Further Examine readings made by Mind Flex and Force Trainer • Summation Circuit • Continue Testing of Electrode Placements

  23. References Flatley, Joseph L. “G-Tec Intendix brain-computer interface ready for consumers.” http://www.engadget.com/2010/03/10/g-tec-intendix-brain-computer-interface-ready-for-consumers-vid/  Galan, F. et al. “Continuous Brain-Actuated Control of an Intelligent Wheelchair by Human EEG”. ftp://ftp.idiap.ch/pub/papers/2008/galan-grazBCI2008-2008.pdf. Murph, Darren. “Thought-control research brings mental channel changing ever closer.” http://www.engadget.com/2010/02/24/thought-control-research-brings-mental-channel-changing-ever-clo/?icid=engadget-iphone-url Dr. Hyle Park Assistant Professor, Bioengineering A211 Bourns Hall, Riverside, CA 92521 Patel, Nilay. “Mattel Mindflex hack shocks you into serenity.” http://www.engadget.com/2010/03/04/mattel-mindflex-hack-shocks-you-into-serenity/ Dr. Aaron Seitz, Assistant Professor, Psychology 3101 Psych, Riverside, CA 92521 Phone: 951-827- 6422 Provost, Sheldon, J. Lucas McKay. “A real-time EEG Based Remote Control of a Radio -Shack Car”. http://www.lems.brown.edu/~scp/eegremotecontrolcar.pdf. Hong Xu, Development Engineer in Bioengineering at UCR A217 Bourns Hall, Riverside, CA 92521 Phone: 951-827-7235 The Local. “Scientists develop helmet to control toy cars via brain waves”. Science & Technology. 19 Jun 2008. http://www.thelocal.de/sci-tech/20080619-12577.html.

  24. Questions? http://www.istockphoto.com

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