Brain-computer interface
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Brain-computer interface Brain-computer interface Presentation Transcript

  • BRAIN-COMPUTER INTERFACE Presented By, Neellavathi.B
  • DEFINITION
    • A brain–computer interface (BCI), sometimes called a direct neural interface or a brain–machine interface, is a direct communication pathway between a brain and an external device.
  • TYPES
    • Invasive Brain Computer Interfaces
    • -implanted directly into the brain and has the highest quality signals.
    • -provide functionality to paralyzed people.
    • Partially Invasive Brain Computer Interfaces
    • -implanted inside the skull but outside the brain.
    • Non Invasive Brain Computer Interfaces
    • -gives a patient the ability to move muscle implants and restore partial movement.
  • ELECTRIC BRAIN
    • Our brains are filled with neurons.
    • Every time we think, move, feel or remember something, our neurons are at work.
    • That work is carried out by small electric signals that zip from neuron to neuron as fast as 250 mph.
  • ELECTRIC BRAIN
  • BCI INPUT AND OUTPUT
    • The easiest and least invasive method is a set of electrodes -- a device known as an electroencephalograph (EEG) -- attached to the scalp.
    • The electrodes can read brain signals.
    • The electrodes measure minute differences in the voltage between neurons. The signal is then amplified and filtered.
    • In current BCI systems, it is then interpreted by a computer program
  • BCI INPUT AND OUTPUT
  • BCI APPLICATIONS BCI is mainly used for severely disabled people.
  • NEUROPROSTHETICS 
    • Neuroprosthetics is an area of neuroscience concerned with neural prostheses—using artificial devices to replace the function of impaired nervous systems or sensory organs.
    • The most widely used neuroprosthetic device is the cochlear implant.
    • There are also several neuroprosthetic devices that aim to restore vision, including retinal implants.
  • BCI VERSUS NEUROPROSTHETICS  
    • Neuroprosthetics typically connect the nervous system to a device.
    • BCIs usually connect the brain (or nervous system) with a computer system.
  • APPLICATIONS OF BCI
    • Medicine
    • Military
    • Manufacturing
    • Gaming
    • Social Potential
  • PROMINENT RESEARCH SUCCESSES Yang Dan and colleagues' recordings of cat vision using a BCI implanted in the lateral geniculate nucleus (top row: original image; bottom row: recording)
  • ANIMAL BCI RESEARCH
  • HUMAN BCI RESEARCH
  • WHEELCHAIR ARM CONTROLLED BY THOUGHT ALONE
  • BCI IN AVATAR
  • BCI IN AVATAR
  • CURRENT DEVELOPMENTS AND FUTURE
    • ‘ Braingate’ brain computer interface takes shape
    • ATR and honda develops new brain computer interface
    • Hitachi: commercial mind-machine interface by 2011
    • Hat allows computer control by thought
    • Dream machine
  • BCI ADVANTAGES
    • BCIs will help creating a Direct communication pathway between a human or animal brain and any external devices like computers.
    • BCI has increased the possibility of treatment of disabilities related to nervous system along with the old technique of Neuroprosthetics.
    • Techniques like EEG, MEG and neurochips have come into discussions since the BCI application have started developing.
    • This has provided a new work area for scientists and researchers around the world.
  • BCI DRAWBACKS
    • The brain is incredibly complex.
    • The signal is weak and prone to interference.
    • The equipment is less than portable.
  • CONCLUSION
    • Newly purchased computers will one day arrive with biological signal sensors and thought-recognition software built in, just as keyboard and mouse are commonly found on today's units.
  •