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Brain Computing

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  • 1. Brain Computer Interface 指導老師:李柏磊 副教授 報告者:電機三 B 葉姿妤 電機二 A 蕭有容 電機二 B 陳迺惠
  • 2. Outlines
    • What is BCI?
    • How does it work?
    • Brain Wave Control
    • Simple introduction of the brain
    • Data Acquisition
    • Apps
    • Drawbacks & Future
    • Q&A
  • 3.  
  • 4. You can make it with BCI !
  • 5.
    • What is BCI?
  • 6.
    • Brain -Computer Interface
    • - Direct Neural Interface or Brain-Machine Interface
    • Direct communication pathway between a brain and an external device.
    • Research on BCIs began in the
    • 1970s at the University of
    • California Los Angeles
  • 7. How does it work?
    • Signal Acquisition
    • Signal Processing
    • Devices
  • 8. Brain Wave Control
  • 9. Brain Wave Control
    • Active
      • α (8 – 12 Hz): relaxed/reflecting
      • β (12 – 30 Hz): alert/working
      • - Training
      • - Misjudgment
  • 10. Brain Wave Control
    • Passive
      • Evoked potentials
  • 11. Brain Wave Control
    • Passive
      • Evoked potentials
  • 12. Brain Wave Control
    • Passive
      • Evoked potentials
  • 13. Simple introduction of the brain Focus on cortex
  • 14. Cerebral cortex 大腦皮質 Cerebellum 小腦 Midbrain 中腦
  • 15.  
  • 16. Structure of the cortex
  • 17. Cortex( 皮質 )
  • 18.
    • Primary Somatosensory Cortex
    • 主要身體感覺區
    • Primary Motor Cortex
    • 主要運動區
    • Motor Association Cortex
    • 運動聯合區
  • 19.
    • Sensory Association Area
    • 感覺聯合區
    • Visual Association Area
    • 視覺聯合區
    • Visual Cortex
    • 視覺皮質區
    • Wernicke's Area
    • 威氏區
  • 20.
    • Prefrontal Cortex 前額葉皮質區
    • Speech Center (Broca‘s Area)
    • 布洛卡氏區
    • Auditory Cortex
    • 聽覺皮質區
    • Auditory Association Area
    • 聽覺聯合區
  • 21. Data Acquisition
  • 22. Data Acquisition
    • Invasive BCIs
    • Non-Invasive BCIs
    • Partially-Invasive BCIs
    • Wireless BCIs
  • 23. Invasive BCIs
    • Implanted: grey matter
    • Signals: highest quality
    • Scar-tissue build-up
    • Target:
      • repairing damaged sight
      • providing new functionality to persons with paralysis
        • Artificial Vision System
  • 24. Electrode Arrays
  • 25. App.- Artificial Vision 4X4 16 pixels 8X8 64 pixels 12X12 144 pixels 16X16 256 pixels 32X32 1024 pixels 128X128 16384 pixels
  • 26. Non-Invasive BCIs
    • poor signal resolution
    • power muscle implants and restore partial movement
    • Interfaces
      • EEG
      • MEG
      • MRI
  • 27. MEG
    • Magnetoencephalography
    • Magnetic Field: 10 -15 T ~10 -13 T (Weak!!)
      • S.Q.U.I.D. Sensors
      • Shielded Room
  • 28. Magnetic Field
  • 29. Partially-Invasive BCIs
    • Implanted: skull
    • lower risk of forming scar-tissue in the brain
    • Signal quality between invasive BCIs & non-invasive BCIs
  • 30. Wireless BCIs
    • More practical
    • Embedding multiple chips
      • More complicated thoughts
    • Transmission with RF
    • key requirement: keep the heat down
  • 31. Wireless BCIs
    • Size: 2cm in diameter 、 8cm thick
    • Low cost
    • Receive Distance: 10m ~ 50m
  • 32. Examples of BCI
  • 33. Rats implanted with BCIs in Theodore Berger ’ s experiments
  • 34. Monkey operating a robotic arm with BCIs
  • 35. Controlling a robotic dog with BCI
  • 36. A man operates the computer with his EEG
  • 37. A man operates the computer with his EEG
  • 38. P300->300ms 頂葉
  • 39. Disadvantages
    • Headache
    • Exhausting
    • Laziness Degenerate
  • 40. Future
    • Integrate with different territory
    • From lab to factory
    • Nursing and medical treatment
  • 41. References
    • http://spectrum.ieee.org/biomedical/devices/the-brainmachine-interface-unplugged/0
    • http://www.seeingwithsound.com/etumble.htm
    • http://www.yct.com.tw/life/98drum/98drum17.pdf
    • http://www.libertytimes.com.tw/2007/new/may/24/today-life3.htm
    • http://hi.ctust.edu.tw/mediawiki/index.php/%E8%85%A6%E6%A9%9F%E4%BB%8B%E9%9D%A2%28BCI%29
  • 42. Q&A

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