neuroprosthetics - 1
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Introduction
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It is a device which replaces nervefunction lost as a result of disease or injury.
Can be used in the spinal cord to allow standing inparaplegics.
Can be used to restore hand and upper
movement in Tetraplegics.
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It records and processes inputs from outside
the body and transmits information to the
sensory nerves for interpretation by the
brain.
Examples: Cochlear implant to restore
hearing, retinal cortex prostheses for
restoring vision, extra sensory input.
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I t lli t H Pr t i
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How do neurons communicate ?
&How do we communicate with neurons ?
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Most nerves communicate via Action otentials. We communicate by Voltages Manipulationand and Injecting
currents.Key Issues : 1) Amplitude , 2)Duration and olarity ,
3) Spatial Selectivity
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System must be Durable.
Device must be Palatable.
Anumber of materials have been identified asbeing safe.
Encapsulation between implant and cellsshould be more.
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Sacral nerve stimulation
Cochleaimplants
Pain control via Spinal chord
Retinal implantsNerveStimulation
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y Nerve stimulation for foot drop.
y Artificial genitourinary sphincter to controlsexual activity!!
y Nerve stimulator for long term artificialrespiration.
y Chronic Deep brain stimulation.
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Implant TechnologiesNeuron modelling Stimulating/recording nerves Auditory ProsthesesVisual ProsthesesMotor Prostheses Emerging Technologies
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Health is Wealth
Need of future.
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