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Dr. Boris Hyle Park BIEN 175A Group F Joseph Steven Fletcher Ryan Alan LaCroix Gary Matthew Stroup Kenneth Gerard Sugerman March 15, 2010
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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 Purpose
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Off Med High Off Med High Training Time <15 minutes Output Continuous Signal 25 ft control range 2 independent axes Specifications
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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
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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 Timeline Adapted from www.toysrus.com
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Gantt Chart
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Force TrainerMindflex NeuroSky Circuitry from Force Trainer Adapted from http://company.neurosky.com/products/ Consumer Products
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http://www.ipmc.cnrs.fr Adapted from http://s4.hubimg.com/
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Fan Modulation Duty Cycle Oscillating Signal ~470 Hz DC Drift Peak Height Fan High Fan Medium Fan Off Previous Results
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Fan Modulation Duty Cycle Oscillating Signal ~470 Hz DC Drift Peak Height Fan High Fan Medium Fan Off Previous Results
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Design Specification Continuous Three levels Integrator Circuit Electronically performs integration RC Time constant Previous Results
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Design Specification 1000ms Response time 3 Levels of Control Previous Results
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Continuous control Integrator DC Drift High Pass Filter Peak Height Threshold Circuit (Clamp) AC to DC Rectifier Fan High Fan Medium Fan Off Solutions
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Circuitry Design High Pass Current Progress
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http://www.ipmc.cnrs.fr Adapted from http://s4.hubimg.com/
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Damaged circuits in the Force Trainer 2 nd Force Trainer Components Analyzed without disassembly Current Progress
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Used FGEN to input a sine wave 45 Hz-300 Hz (5 Hz increments) 10 mV amplitude Summation Circuit
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Used FGEN to input a sine wave 45 Hz-300 Hz (5 Hz increments) 10 mV amplitude Summation Circuit
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http://www.ipmc.cnrs.fr Adapted from http://s4.hubimg.com/
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http://www.ipmc.cnrs.fr
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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 Work Completed
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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 Future Work
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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. References
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Questions? http://www.istockphoto.com
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