Brain machine interface

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  • Hi Ppt is nice ..pls send to me balajik050@gmail.com
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  • hi anup..dis is manjunath from bangalore...ur ppt is really good..im doing seminar on this topic can u send t required doc to my id manachi.manju@gmail.com i ll be waiting...pls do send..
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Brain machine interface

  1. 1. BRAIN MACHINE INTERFACE<br />ANUP WADHEKAR<br />
  2. 2. OBJECTIVES<br /><ul><li> WHAT IS BRAIN MACHINE INTERFACE
  3. 3. NEED OF BRAIN MACHINE INTERFACE
  4. 4. MAIN PRINCIPLE AND WORKING
  5. 5. CHALLENGES
  6. 6. FUTURE EXPANSION
  7. 7. CONCLUSION </li></li></ul><li>INTRODUCTION<br />
  8. 8. UNDERSTANDING BMI<br /><ul><li>Brain machine interfac e sometimes called a direct neural interface or brain–computer interface, is a direct communication link between a functioning human brain and the outside world.
  9. 9. BMI uses brain activity to command, control, actuate and communicate with the world directly through brain integration with peripheral devices and systems.</li></li></ul><li>WHY BMI<br /> The field of BMI has emerged mostly toward neuroprosthetics applications that aim at restoring damaged hearing, sight and movement.<br />
  10. 10. bmi platform<br />
  11. 11. MAIN PRINCIPLE<br /> Main principle behind this interface is the bioelectrical activity of nerves and muscles.<br /> Brain is composed of millions of neurons. When the neuron fires, or activates, there is a voltage change across the cell which generates signals on the surface of the brain. By monitoring and analyzing these signals we can understand the working of brain.<br />
  12. 12. Brain-Controlled Vehicle<br />Signal Processing Algorithms/Command Extraction<br />Neural Interface<br />Neural Signals<br />Directional control<br />Control Command<br />Vehicle State Signal<br />Environmental Feedback<br />Sensors<br />
  13. 13. components of bmi<br /><ul><li>IMPLANT DEVICE
  14. 14. SIGNAL PROCESSING SECTION
  15. 15. EXTERNAL DEVICE
  16. 16. FEEDBACK SECTION
  17. 17. Multichannel Acquisition Systems
  18. 18. Spike Detection
  19. 19. Signal Analysis</li></ul>block diagram<br />
  20. 20. EEG<br /> ELECTROENCEPHALOGRAPHY (EEG) IS MEASUREMENT OF ELECTRICAL ACTIVITY PRODUCED BY BRAIN AS RECORDED FROM ELECTRODES PLACED ON THE SCALP.<br />
  21. 21. IMPLANT DEVICE<br /> The EEG is recorded with electrodes, which are placed on the scalp. Electrodes are small plates, which conduct electricity. They provide the electrical contact between the skin and the EEG recording apparatus.<br />
  22. 22. SIGNAL PROCESSING SECTION<br /><ul><li>Multichannel Acquisition Systems</li></ul> At this section amplification, initial filtering of EEG signal and possible artifact removal takes place. <br /><ul><li>Spike Detection</li></ul> Spike detection will allow the BMI to transmit only theaction potential waveforms and their respective arrival times instead of the sparse, raw signal in its entirety. <br /><ul><li> Signal Analysis</li></ul>In this stage, certain features are extracted from the preprocessed and digitized EEG signal which are input to the classifier. Classifier recognize different mental tasks.<br />
  23. 23. <ul><li>EXTERNAL DEVICE</li></ul> The classifier’s output is the input for the device control. The device control simply transforms the classification to a particular action. <br /> Examples are robotic arm, thought controlled wheel chair etc <br /><ul><li>FEEDBACK DEVICE</li></ul>Feedback is needed for learning and for control. Real-time feedback can dramatically improve the performance of a brain–machine interface.<br />
  24. 24. APPLICATIONS<br />1.Auditory and visual prosthesis<br />2.Functional-neuromuscular stimulation (FNS)<br />3.Prosthetic limb control<br />
  25. 25. challenges<br />
  26. 26. ADVANCES LIMITATIONS<br /><ul><li> CHALLENGES</li></ul> Permanent damage to brain.<br /> Virus attack on brain<br /> Thought control and prediction of future thoughts.<br /> Deletion or recording of memories.<br /><ul><li>LIMITATIONS</li></ul>The brain is incredibly complex.<br /> The signals are weak and interference can happen.<br /> There are chemical processes involved as well,which electrodes can’t pick up.<br />
  27. 27. FUTURE EXPANSION<br />Thought-communication device.<br />New research has demonstrated that it is possible for communication from person to person through the power of thought alone.This experiment goes a step further, with the aim was to expand the current limits of this technology and show that brain-to-brain (B2B) communication is possible. <br />Super intelligent machines- Cyborgs.<br /> A Cyborg is a Cybernetic Organism, part human part machine. In the years ahead we will witness machines with an intelligence more powerful than that of humans.This will mean that robots, not humans, make all the important decisions .This may bring dire consequences for humankind.<br />
  28. 28. CONCLUSION<br /> BMI’s will definitely have the ability to change the way a person looks at the world by giving people back their vision and hearing. <br /> But the question is that What kind of people are we becoming? Is someone with a synthetic eye, less a person than someone without? Shall we process signals like ultraviolet, X-rays, or ultrasounds as robots do? These questions will not be answered in the near future, but at some time they will have to be answered. What an interesting day that will be.<br />
  29. 29. THANK YOU !!!<br />ANY QUERIES??<br />

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