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Brain Computer Interface

Brain Computer Interface. What is BCI?. Brain -Computer Interface - Direct Neural Interface or Brain-Machine Interface Direct communication pathway between a brain and an external device. Introduction.

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Brain Computer Interface

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  1. Brain Computer Interface

  2. What is BCI?

  3. Brain -Computer Interface -Direct Neural Interface or Brain-Machine Interface • Direct communication pathway between a brain and an external device.

  4. Introduction • Brain-computer interface (BCI) is a fast-growing emergent technology, in which researchers aim to build a direct channel between the human brain and the computer. • A Brain Computer Interface (BCI) is a collaboration in which a brain accepts and controls a mechanical device as a natural part of its representation of the body. • Computer-brain interfaces are designed to restore sensory function, transmit sensory information to the brain, or stimulate the brain through artificially generated electrical signals.

  5. How does it work? • Signal Acquisition • Signal Processing • Devices

  6. BCI Model

  7. Model

  8. How it works

  9. BCI Approaches

  10. Simple introduction of the brain Focus on cortex

  11. Data Acquisition • Invasive BCIs • Non-Invasive BCIs • Partially-Invasive BCIs • Wireless BCIs

  12. 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

  13. Electrode Arrays

  14. Non-Invasive BCIs • poor signal resolution • power muscle implants and restore partial movement • Interfaces • EEG • MEG • MRI

  15. Partially-Invasive BCIs • Implanted: skull • lower risk of forming scar-tissue in the brain • Signal quality between invasive BCIs & non-invasive BCIs

  16. Wireless BCIs • More practical • Embedding multiple chips • More complicated thoughts • Transmission with RF • key requirement: keep the heat down

  17. Applications • Provide disabled people with communication, environment control, and movement restoration. • Provide enhanced control of devices such as wheelchairs, vehicles, or assistance robots for people with disabilities. • Provide additional channel of control in computer games. • Monitor attention in long-distance drivers or aircraft pilots, send out alert and warning for aircraft pilots. • Develop intelligent relaxation devices.

  18. Applications • Control robots that function in dangerous or inhospitable situations (e.g., underwater or in extreme heat or cold). • Create a feedback loop to enhance the benefits of certain therapeutic methods. • Develop passive devices for monitoring function, such as monitoring long-term drug effects, evaluating psychological state, etc. • Monitor stages of sleep

  19. Examples of BCI

  20. Honda Asimo Control

  21. Gaming Control

  22. Monkey operating a robotic arm with BCIs

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