The Braingate system allows a paralyzed man to control a computer using his thoughts by monitoring his brain activity through a brain implant. Developed in 2003 by Cyberkinetics and Brown University, Braingate consists of a chip implanted on the motor cortex that detects neural signals which are transmitted to an external processor and translated to move a computer cursor. While offering paralyzed individuals control of devices, Braingate is expensive, requires risky brain surgery, and has limited information transfer rates, though it provides hope for independent living.

1. BRAINGATE SYSTEM
Presented by
B.Prudhvi Reddy
13F61A04F2
Guided By
Niraja Reddy

2. 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

3. 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.

4. 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".

5. 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

6. • The Neuro chip
• The connector
• The converter
• The computer
The components in this system

7. 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

8. 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.

10. 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.

11. Brain Gate Research in Human
A boon to the paralyzed
• Mathew-Nagel the first person to use the
brain-computer interface to restore
functionality lost due to paralysis…

12. 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

13. DISADVANTAGES
• Expensive
• Risky Surgery
• Not Wireless yet
• Limitation in information transform rate.
The latest technology is 20 bits/min.

14. 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