1. BSO Technologies1 of 31 Brain Signal Operated Technologies Brain Signal Controlled Device January 2007

2. BSO Technologies2 of 31 Presentation Outline  Project Background  Our Product System Overview High Level Design  Business Case  Group Dynamics  Conclusion  Q&A

3. BSO Technologies3 of 31 Roles In Project  Heng Wei Lester Lan (COO, CTO)  Victor Yu (CEO, CFO)  Missing Member 1  Missing Member 2  Missing Member 3  Missing Member 4

4. BSO Technologies4 of 31 Project Motivation  Neurological diseases Degeneration of nerve cells in brain and spinal cord Cognitive abilities remain intact  3000 Canadians diagnosed with ALS today 2 to 3 die each day  Offer an alternative way of living for the disabled

5. BSO Technologies5 of 31 Projection Motivation http://en.wikipedia.org/wiki/Image:Stephen_Hawking_050506.jpg

6. BSO Technologies6 of 31 Project Motivation  Conventional Brain-Computer Interface with passive electrodes Sticky gel makes hair messy Long set-up time

7. BSO Technologies7 of 31 Electroencephalography  Place electrodes on scalp  Electrodes detect brain signals  Signals are processed by hardware and software  Alter signals by moving muscles, blinking eyes, sleeping, etc

8. BSO Technologies8 of 31 System Overview  Modular EEG  Easy to set-up  2 channels

9. BSO Technologies9 of 31 Head Gear  Face shield as head gear  Gold pin array as electrode  Ear clip as reference electrode

10. BSO Technologies10 of 31 Pin Electrodes  2X5 gold pin arrays  Contact scalp directly  Pressure but no/little pain

11. BSO Technologies11 of 31 Pre-Amplification  Extract brain signals via electrodes  Instrumentation amplifier increases signal strength  Op-amp prevents other body currents from entering instrumentation amplifier  Send to amp stage through a cable and D-sub connectors

12. BSO Technologies12 of 31 Amplification and Filtering

13. BSO Technologies13 of 31 Amplification and Filtering  2 second-order low pass filters  Amplifier with fixed gain of 100  Amplifier with variable gain of 1- 150  AC coupled high pass filter  Powered by batteries Standard DC power supply works too

14. BSO Technologies14 of 31 PCI Interface  PCI 6024E DAQ  2 outputs from amp stage connect to 2 analog channels in DAQ  Ground signal from amp stage connect to analog input ground in DAQ Hardware DAQSoftware

15. BSO Technologies15 of 31 Software Implementation

16. BSO Technologies16 of 31 Software Implementation  Brain signals displayed and analyzed in LabVIEW  DAQ assistant in LabVIEW helped reading signals  Sampled at 1000Hz  Further filtered with a 45Hz LPF and a 60Hz notch filter  Filtered signals way cleaner than raw inputs

17. BSO Technologies17 of 31 Problems Encountered  Electrode placements No prior biomedical knowledge  Low voltage signal Interfered by noise  Hard to control brainwaves Cannot turn on op-amps  AD625 -> INA128  LabVIEW sampling rate Long delay time if requesting too many samples

18. BSO Technologies18 of 31 Results Raw BrainwavesFiltered Brainwaves

19. BSO Technologies19 of 31 Results Desired EEGOur EEG http://en.wikipedia.org/wiki/Image:Eeg_raw.svg

20. BSO Technologies20 of 31 Results – Sleepy but Awake AlphaLow Beta High BetaGamma DeltaTheta

21. BSO Technologies21 of 31 Marketing Plan  Targeting markets Researchers Hospitals People with disabilities  Provide on-site training  Start in North America and expand worldwide

22. BSO Technologies22 of 31 Budget ComponentCost Head Gear$20.00 Electrodes$14.82 Power Supply$9.01 Interface Box$9.14 Electronics$62.90 Connections$15.14 Tools$13.45 LabVIEW and DAQ (~$1,500)Borrowed Miscellaneous$23.25 Total$167.71 Total Project Expense: $360.28

23. BSO Technologies23 of 31 Selling Price  Possible unit manufacturing cost of <$50  Unit selling price of ~$100 Much lower than that of commercial complex EEG systems  Raise price as more features are being added

24. BSO Technologies24 of 31 Potential Competitors  Many commercial EEG systems exist Futherhealth.org  EEG system with 500 displays  Costs $3,450 WaveRider Pro  Biofeedback system with 4 channels reading from brain, heart, and muscles  Costs $1,700

25. BSO Technologies25 of 31 Group Dynamics  Formed in summer 2006  Started with 6, ended up with 2  Group communications Caucus -> Email -> Phones  Group meetings 3 times a week Late or no show

26. BSO Technologies26 of 31 Group Dynamics  Group Members Leaving Simply disappear No pre-requisite Afraid of too much work Family problems/Co-op  Individual Tasks Not done Lied to others by saying tasks were done

27. BSO Technologies27 of 31 What We Learned  Technical Skills Biological structure of the brain Hardware assembly  Soft Skills Team work  Expect the unexpected  Contingency Plans Working in groups of 2, 3, 4, 5, and 6

28. BSO Technologies28 of 31 Future Work  PONG game! More signal analysis in LabVIEW Store different brainwaves for different thoughts Two players competing against each other  Brain-controlled toys

29. BSO Technologies29 of 31 Conclusion  Acquired various technical and communication skills  (Kind of) overcame the collapse of the group  Product may one day help the disabled  Fun, educational, and frustrating …

30. BSO Technologies30 of 31 Acknowledgements  Brad Oldham  Troy Tyler  Andrew and Steve ’ s extension  Ex-group members  Anyone who saw our group ’ s disaster and offered help

31. BSO Technologies31 of 31 Questions?