Brain Computer Interface

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BRAIN COMPUTER INTERFACE:

BRAIN COMPUTER INTERFACE K.RAJSHEKAR J.SURENDRA 1

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AGENDA 1.INTRODUCTION 2.WHAT IS BRAIN COMPUTER INTERFACING 3.BASIC ELEMENTS 4.TYPES 5.HOW IT WORKS 6.APPLICATIONS 7.CONCLUSION

INTRODUCTION: :

INTRODUCTION: In the past decade, electronic and computer technology started research groups around the world to develop brain computer/machine interface (BCI) . BCI provides direct communication and control channels between brain and external world.

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WHAT IS BCI Brain Computer interface (BCI) is a communication system that recognized user's command only from his or her brainwaves and reacts according to them. BCI refers to the direct interaction between a healthy brain and a computer. It doesn’t depend on peripheral nerves and muscles.

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BASIC ELEMENTS The BCI System is used to sense, transmit, analyze and apply the language of neurons. 1. The Chip 2. The Connector 3. The Converter 4. The Computer 1. THE CHIP : A four-millimeter square silicon chip studded with hundre hair microelectrodes is embedded in the primary motor cortex. 2.THE CONNECTOR: when somebody thinks”move cursor up and left”his cortical neuron fire in a distinctive pattern;the signal is transmitted through the pedestal plug attached to the skull.

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3. THE CONVERTER: The signal travels to an amplifier where it is converted to optical data and bounced by fibre-optic cable to a computer. 4.THE COMPUTER: The computer translate brain activity and generate a communication output using decoding software

BCI TYPES::

BCI TYPES: 1. Invasive Involves attaching electrodes directly to the brain tissue The patient’s brain gradually adapts its signals to be sent through the electrodes 7 In the futuristic vision of the Wachowski brothers' movie trilogy "The Matrix," humans dive into a virtual world by connecting their brains directly to a computer……

BCI TYPE(CONT):

BCI TYPE (CONT) 2. Non-invasive Involves putting electrodes on the scalp of the patient, and taking readings 8 http://www.tcnj.edu/~leynes/lab/tour.html

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HOW SYSTEM IS WORKING ?

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APPLICATIONS

Real story :Monkey think, Robot Do:

Real story : Monkey think, Robot Do Learning to control a brain-machine interface for reaching and grasping by primates. Nicolelis et al., PLoS Biology 2003

Berlin Brain Computer Interface:

Berlin Brain Computer Interface These people are using non invasive BCI 12

Second Life with BCI: He uses Invasive BCI:

Second Life with BCI: He uses Invasive BCI 13

Artificial Sensory Channel :

Artificial Sensory Channel Artificial Hearing Since 1978, about 70,000 cochlear recipients worldwide are using this artificial hearing done with the help of BCI

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FUTURE REQUIREMENTS: The further development of BCI System is to potentially provide limb movement to people with severe motor disabilities. Limb movement developments are currently at the research stage and are not available for use with the existing BCI System . The goal of this development program would be to allow these individuals to one day use their own arms and hands again .

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The BCI helps the quadriplegic patients who cannot perform even simple actions without the help of another person are able to do things like checking e-mails, turn the TV on or off,and control a prosthetic arm—with just their thoughts. Conclusion : BCI technology does not Promise miracles-it does not, for instance, say that a paralysed man will one day walk using an artificial leg by his thoughts alone. . . .

REFERENCES: :

REFERENCES: Nicolelis (2001). Actions from thoughts. Nature 409 Talwar, et al.(2002). Rat navigation guided by remote control. Nature 417 Wolpaw, et al.(2002). Brain-computer interfaces for communication and control.  Clinical Neurophysiology113 www.youtube.com www.wikipedia.com

QUERIES? :

QUERIES?

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THANK YOU

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