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Seminar ReportOn
BRAIN-MACHINE INTERFACE
EEERulez.BlogSpot.in
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ABOUT:A Brain-Machine interface is an attempt to mesh our minds
with
machinesIt is a communication channel from a humans brain to a
computer.
Our approach bases on as artificial neural network that
recognizes and
classifies different brain activation patterns associated with
carefully
selected mental tasks.
MAIN PRINCIPLE:The human body which composed of living tissues
can be considered
as a power station, generating multiple electrical signal with
two internal
sources namely muscles and nerves.
This interface is the bioelectrical activity of nerves and
muscles.
when neuron fires, or activates there is voltage change across
the cell
nearly 100mv which can be read through a variety of devices.
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BMI ISBASEDON THREE IMPORTANT PARTS
1.BRAIN
2. INTERFACE
3. MACHINE
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ELECTROENCEPHALOGRAPHY(EEG)
1. Itis a methodusedin measuringtheelectrical activityofthe
brain
2.TheEEGsignalcan bepickedup withelectrodeseitherfrom
scalpordirectlyfrom thecerebral cortex
3.EEGrangeisclassifiedintofiveranges
Band Frequency [Hz]
Delta 0.5- 4
Theta 4- 8
Alpha 8- 13
Beta 13- 22
Gamma 22-30
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EXTERNAL DEVICES
1.RoboticArm
2.Thoughtcontrolled wheelchair3.
ComputerconnectedtoEEGimplantdevice
Thought controlled wheel chair
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1. Auditory and visual prosthesis
2. Functional-neuromuscular stimulation
3. Prosthetic limb control
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FUTURE EXPANSION
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BMIs will have the ability to give people back their visionand
hearing. They will also change the way, a person
looks at the world. Someday these devices might be
more common than keyboards. Is someone with a
synthetic eye, less a person than someone without?Shall we
process signals like ultraviolet, X-rays, or
ultrasounds as robots do? These questions will not be
answered in the near future, but at some time they will
have to be answered. What an interesting day that willbe.
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