BRAINGATE SYSTEM

Presented by B.Prudhvi Reddy

13F61A04F2

Guided By Niraja Reddy

INTRODUCTION • It is a mind-to-movement system that allows a

quadriplegic man to control a computer using his Thoughts.

• The system is to help those who have lost control of their limbs, or other bodily functions,

• It monitors brain activity in the patient and converts the intention of the user into computer commands

DEVELOPMENT• Company and Scientist:

• Brain Gate is a brain implant system developed by the bio-tech company Cyber kinetics in 2003 in conjunction with the Department of Neuroscience at Brown University.

Nicholas Halsopulas

Working Principle • The principle of brain gate neural interface system is that which intact with brain function, neural signals generated are interpreted by the systems and a cursor is shown to the user on a computer screen that provides an alternate “Brain Gate pathway".

BCI Technology• “BCIs” usually connects the brain (or nervous system) with a

computer system.

•A Brain Computer Interface, called as direct neural

interface or brain machine interface is a direct communication

pathway between human or animal brain and an external device.

•Based on the communicative Pathway BCI is classified as

follows

One Way BCI

Two Way BCI

• The Neuro chip

• The connector

• The converter

• The computer

The components in this system

Working• The Brain Gate neural interface device is a

propriety brain-computer interface that consist

of an Inter neural signal sensor and External

Processors.

• The sensor consists of a tiny chip containing

100 microscopic electrodes that detect brain cell

electrical activity.

• The chip is implanted on the surface of brain in

the motor cortex area that controls movement.

Motor Cortex

Working (Cont.)

• External Processors convert neural signals into an output signal under the users own control.

• In the pilot version of the device, a cable connects the sensor to an external processor in a cart that contains computers.

• The computers translate brain activity and create the communication output using custom decoding software.

HOW INFORMATION IS TRANSMITTED?

• When a work is done through any part of body then a potential difference is created in the brain.

• This potential difference is captured by the electrodes and is transmitted via fiber optic to the Digitizer(external processor).

• The digitizer converts the signal into some 0’s and 1’s and that is feed into the computer.

Brain Gate Research in HumanA boon to the paralyzed• Mathew-Nagel the first person to use the

brain-computer interface to restore functionality lost due to paralysis…

ADVANTAGES

• Controlling remote devices • Making and receiving telephone calls• Accessing the internet.• Turn on or off the lights • Control robotic arm• Watch and control television• Use the pc• Locking or unlocking doors• Motorized wheelchair

DISADVANTAGES

• Expensive• Risky Surgery• Not Wireless yet•Limitation in information transform rate.

The latest technology is 20 bits/min.

Conclusion

• The invention of Brain gate is such a revolution in medical field. The remarkable breakthrough offers hope that people who are paralyzed will one day be able to independently operate artificial limbs, computers or wheelchairs.

• The idea of moving robots or prosthetic devices not by manual control, but by mere “thinking” (i.e., the brain activity of human subjects) has been a fascinated approach