01-06-2012, 02:44 PM
Neural networks
Neural networks.ppt (Size: 1.77 MB / Downloads: 40)
Introduction
A neural networks consist of a set nodes(neurons/units) connected by links
Each link has a numerical weight
A set of input links from other units
A set of output links from other units
Biological Neural networks
A neuron consists of a cell body, nucleus, dendrites, axon
The size of the cell body of neuron in the range 10-80 micrometers
The dendrites & axons have diameter of the order of a few micro meter
The total length of a neuron varies from 0.01 mm .
Principle
"The principle of operation of the Brain Gate Neural Interface System is that with intact brain function, neural signals are generated even though they are not sent to the arms, hands and legs. These signals are interpreted by the System and a cursor is shown to the user on a computer screen that provides an alternate "Brain Gate pathway". The user can use that cursor to control the computer, just as a mouse is used."
Neuroprosthetics
Neuroprosthetics is an area of neuroscience concerned with neural prostheses using atificial devices to replace the function of impaired nervous system or sensory.
Differences between BCIs and neuroprosthetics.
CONCLUSION
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.
Neural networks.ppt (Size: 1.77 MB / Downloads: 40)
Introduction
A neural networks consist of a set nodes(neurons/units) connected by links
Each link has a numerical weight
A set of input links from other units
A set of output links from other units
Biological Neural networks
A neuron consists of a cell body, nucleus, dendrites, axon
The size of the cell body of neuron in the range 10-80 micrometers
The dendrites & axons have diameter of the order of a few micro meter
The total length of a neuron varies from 0.01 mm .
Principle
"The principle of operation of the Brain Gate Neural Interface System is that with intact brain function, neural signals are generated even though they are not sent to the arms, hands and legs. These signals are interpreted by the System and a cursor is shown to the user on a computer screen that provides an alternate "Brain Gate pathway". The user can use that cursor to control the computer, just as a mouse is used."
Neuroprosthetics
Neuroprosthetics is an area of neuroscience concerned with neural prostheses using atificial devices to replace the function of impaired nervous system or sensory.
Differences between BCIs and neuroprosthetics.
CONCLUSION
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.