div ppt brain gate system
DESCRIPTION
brain gate systemsTRANSCRIPT
M.DIVYA
How Does Brain Control Motor Function?
The Mind-To-Movement System
That Allows A Quadriplegic Man To
Control A Computer Using Only His
Thoughts Is A Scientific Milestone
Brain Gate Neural Interface Device- a
‘brain-computer’ interface that uses
internal neural signal sensor and external
processors to convert neural signals into an
output signal under the users own control.
Definition
NEURO CHIP
What It Is The sensor consists of a tiny chip (smaller
than a baby aspirin) with one hundred electrode sensors each thinner than a hair that detect brain cell electrical activity.
Brain Gate Chip
100 hair thin electrodes to sense the electro-magnetic signature of neurons firing in specific areas of the brain
Brain-Computer Interface (BCI) BCI – direct communication pathway
between a brain or brain cell culture and a device (computer)
One way BCIs◦ information passes from brain to computer or
computer to brain Two way BCIs
◦ information is exchanged between brain and computer
Basic Process
Chip implant system developed by Cyber kinetics in 2003
Designed to help those who have lost control of their limbs or other bodily functions
• The electrode translates brain
activity and sends the information
to the computer in a format it can
understand.
Brain Gate uses a sensor that is implanted onto the motor cortex of the brain.
The device analyzes brain signals then interprets and translated them into cursor movements.
How it Works
WorkingPreprocessing DetectionControl TrainingBio feedback
Brain Gate Device
Monitored signature is translated into electrically charged signals.
Signals are then sent and decoded using a program to move cursor, robot arm, etc.
Robot Arm
Nagle, a 25-year-old
quadriplegic, is the first
human fitted with the
Brain Gate Neural
Interface.
Benefits
• Using the Brain Gate system, Matt could control a cursor on a computer screen
-Control TV-Check e-mail-Draw on screen
• He could also send commands to an external prosthetic hand
-Open-Close
Matthew Nagle
Applications
A Boon to the paralyzed -Brain Gate Neural Interface System.
Clinical trial on Nagle.
Statement Of Nagle.
“I can't put it into words. It's just—I use my
brain. I just thought it. I said, "Cursor go up
to the top right." And it did, and now I can
control it all over the screen. It will give me
a sense of independence.”
-Matt Nagle
Statement
Current Applications
Navigate Internet
Play Computer Games
Turn Lights On and Off
Control Television
-Monkeys
Experiment by Miguel Nicolle's and colleagues for use on Rhesus monkeys succeeded in closing the feedback loop of movements in a robot arm.
Regulating Breathing
Controlling Body Functions
Future Applications
In the next two years, Cyber kinetics
hopes to refine the chip to develop a
wireless version
◦No need for a plug
◦Safer
◦Less visible
ConclusionThe idea of moving robots or prosthetic devices not by manual control, but by mere “thinking” (i.e., the brain activity of human subjects).
So this idea helps many patients to control the prosthetic devices of their own by simply thinking about the task.
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