Neural interfacing

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Neural interfacing

  1. 1. OVER VIEW  Objective  Scope  Existing system  Case studies  Types of neural interfacing  Working of the types  Applications  NIS methods  Conclusion  References
  2. 2. OBJECTIVE  The goal of neural interface research is to create links between the nervous system and the outside world.  This can be done either by stimulating or by recording from neural tissue.  It’s ultimate purpose is to assist people with disabilities of neural function
  3. 3. SCOPE  Research to develop systems that can help restore sensory function, communication, and control to impaired humans.  This is turning to be new branch of experimental neuroscience, variously named brain-machine interfaces (BMIs), brain-computer interfaces (BCIs).
  4. 4. EXISTING SYSTEM Signal acquisition Feature extraction Translation Signal processing BCI application Digital signal Commands
  5. 5. CASE STUDIES A monkey operating an robotic arm using an neural interface device. Recording of a cat’s vision using a neural interface device.
  6. 6. A man with acquired blindness, being interviewed about his vision BCI. An basic illustration of brain gate interface.
  7. 7. TYPES OF BCI’S Neural interface(BCI) Invasive Fully invasive Partial invasive Non invasive
  8. 8.  Invasive BCI :are those which are implantable inside the human brain. They are of two types  Partial invasive : Partially invasive BCI devices are implanted inside the skull but rest outside the brain rather than within the grey matter.  Full invasive : are those BCI devices which are completely integrated in the grey matter of the brain.
  9. 9. WORKING OF INVASIVE
  10. 10. Non invasive: are those which are not implantable but it is easily wearable.  it is not harmful and is completely safe.  not very accurate compared to invasive because the skull blocks the signal
  11. 11. WORKING OF NON INVASIVE
  12. 12. APPLICATIONS Neural interfacing Medical Gaming Manufacturing communication
  13. 13. Using BCI brain can be the next console to play games. Can be used to assist people with neural disabilities. Can be used as a communicat- ion medium by using BCI.
  14. 14. NIS METHODS  There are basically three methods for implementing neural interfacing systems.  They are as follows: • P300 detection: The P300 (P3) wave is an event related potential (ERP) component which deals with decision making. • it basically deals with physical attributes of a stimulus. And a person’s reaction to it.
  15. 15.  EEG rhythm: The EEG rhythm is believed to reflect an underlying execution/observation matching system.  consists of two types: • α rhythm deals with the visual cortex • µ rhythm deals with motor and sensory cortex
  16. 16. CONCLUSION  Certainly the applications for BCI devices discussed here are long reach and BCI device are not yet powerful enough to perform various tasks.  Various researches are been deployed under this technology. If it’s successful it can be a revolutionized technology.  Advantages:  How its used in various applications.  Helpful for physically disabled people.  Disadvantages  Invasive devices may have risk factor to deal with.  Non invasive are easily affected by various noises.  Patients should be trained how to think and should go through physical therapy.
  17. 17. REFERENCES  The Neural Interface Program by Dr.Kip Ludwig, university of neurology.  The Science Of Neural Interface Systems by Nicholas G, university of Chicago.  Multi – Command Brain-Computer Interface Based On Silicon Chips by Shang kai G.  Full Data Rate Direct Neural Interface by Boris Murmann and Teressa H. Meng, Fellow IEEE

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