An adult human brain weighs about 1.5 kg on average and contains around 100 billion neurons. Hans Berger invented the brain-computer interface (BCI) in 1924 by recording human brain activity via EEG. A BCI establishes a direct communication pathway between the brain and an external device. It works by acquiring brain signals, processing those signals, and using the results to control devices. Different types of BCI acquisition methods include invasive, non-invasive, partially-invasive, and wireless techniques. Future applications of BCI include improving medical treatment and expanding its use beyond laboratories.

1. BRAIN COMPUTER
INTERFACE
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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
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3. SIMPLE VIEWS OF THE BRAIN 3

4. BCI SYSTEM ARCHITECTURE 4

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
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6. WHAT IS BCI???
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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
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8. How does it work?
 Signal acquisition
 Signal processing
 Devices
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9. Data acquisition 9

10. Data AcquisitionData Acquisition
 Invasive BCIs
 Non-Invasive BCIs
 Partially-Invasive BCIs
 Wireless BCIs
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11. Invasive BCIs
 The target of this is to repair damaged sight
 Provides new functionality to persons with paralysis
 Also artificial vision system
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12. Artificial Vision 12

13. Non-Invasive BCIs
 The interfaces used here are EEG, MEG, MRI
 It powers muscle implants and restore partial movement
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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
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15. Wireless BCIs
 More practical one
 Multiple chips
 It keeps the heat down (key requirement)
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16. Examples
 Rats implanted with BCIs in Theodore Berger’s experiments
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17. Controlling a robotic dog with BCI 17

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
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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
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20. DISADVANTAGES??? 20

21. THANK YOU!!!
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Hope u’ll be one of the person who gonna fetch that prize money