Brain computer interface

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Brain computer interface

  1. 1. BRAIN COMPUTER INTERFACE 11MCA007 JEEVAGAN.V.N 1
  2. 2. BRAIN FACTS  An adult human brain weighs on average about 1.5 kg  It is divided into forebrain, midbrain and hindbrain  The dominant feature, cerebral cortex, is so large that it overshadows every other part of the brain  Our brain can survive upto 4 to 6 minutes without oxygen before it starts to die  There are 100 billion number of neurons in our brain 2
  3. 3. SIMPLE VIEWS OF THE BRAIN 3
  4. 4. BCI SYSTEM ARCHITECTURE 4
  5. 5. HISTORY  HANS BERGER was the one, completely involved in this Brain- Computer Interface(BCI), also called as Mind-Machine Interface’s(MMI) invention  In 1924, he was the first to record human brain activity by means of EEG 5
  6. 6. WHAT IS BCI??? 6
  7. 7. BCI  Direct communication path between a brain and an external device  Mind-Machine Interface (MMI), or sometimes called a direct neural interface or a brain–machine interface (BMI)  BCI versus neuroprosthetics  The term "BCI" usually designates a narrower class of systems which interface with the central nervous system 7
  8. 8. How does it work?  Signal acquisition  Signal processing  Devices 8
  9. 9. Data acquisition 9
  10. 10. Data AcquisitionData Acquisition  Invasive BCIs  Non-Invasive BCIs  Partially-Invasive BCIs  Wireless BCIs 10
  11. 11. Invasive BCIs  The target of this is to repair damaged sight  Provides new functionality to persons with paralysis  Also artificial vision system 11
  12. 12. Artificial Vision 12
  13. 13. Non-Invasive BCIs  The interfaces used here are EEG, MEG, MRI  It powers muscle implants and restore partial movement 13
  14. 14. Partially-Invasive BCIs  It is a signal quality between invasive and non-invasive BCIs  It lowers risk of forming scar-tissue in the brain 14
  15. 15. Wireless BCIs  More practical one  Multiple chips  It keeps the heat down (key requirement) 15
  16. 16. Examples  Rats implanted with BCIs in Theodore Berger’s experiments 16
  17. 17. Controlling a robotic dog with BCI 17
  18. 18. Future Vision  Now, only on laboratories – future will be on factory  Enlarges it’s boundary  Nursing and medical treatment will be benefitted more with Brain- Computer Interface 18
  19. 19. The BCI Award  Cuntai Guan, Kai Keng Ang, Karen Sui Geok Chua and Beng Ti Ang, from A*STAR in Singapore, with their project "Motor imagery-based Brain-Computer Interface robotic rehabilitation for stroke", won the BCI Award 2010  The award comprises of 3000 USD 19
  20. 20. DISADVANTAGES??? 20
  21. 21. THANK YOU!!! 21 Hope u’ll be one of the person who gonna fetch that prize money

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