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Author Topic: Can we create artificial nerve signals?  (Read 2644 times)

thedoc

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Can we create artificial nerve signals?
« on: 19/01/2010 19:06:49 »
Can we create artificial nerve signals?
Asked by Hamza

               
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« Last Edit: 19/01/2010 19:06:49 by _system »

Pwee

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Re: Can we create artificial nerve signals?
« Reply #1 on: 13/01/2010 13:59:04 »
Yes, there are some fields where they use this technology right now.

One of the earliest achievements that is related to this are pacemakers. They can regulate the rate of the hartbeat by stimulating the heart muscle.

During a brain surgery the surgeon sometimes stimulates the brain area that he will operate on to find out whats located there. The patient sais if he/she notices any difference. They can this way artificially generate emotions, speech, movement etc, but they can't really control it.

I believe there is a type of artificial retina that stimulate the visual nerve and this way the patient is able to see again.

Sometimes patients with severe epilepsy are implanted with electronic devices  that stimulate the nerves either in the brain or outside of it (nervus vagus) to counteract the effect of the epileptic focus.

There is probably quite some more cases where we are using this kind of technology, maybe someone else can add more to the list.

chris

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Can we create artificial nerve signals?
« Reply #2 on: 13/01/2010 19:34:55 »
To add to the (very good) points raised above, neurosurgeons will sometimes also use a cooling probe to reversibly inactivate a brain region in order to simulate its removal; then it's possible to anticipate the impact of resection on patient function.

RD

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Can we create artificial nerve signals?
« Reply #3 on: 13/01/2010 23:01:26 »
Quote
Functional electrical stimulation (FES) is a technique that uses electrical currents to activate nerves innervating extremities affected by paralysis resulting from spinal cord injury (SCI), head injury, stroke or other neurological disorders, restoring function in people with disabilities. It is sometimes referred to as Neuromuscular electrical stimulation (NMES).

Injuries to the spinal cord interfere with electrical signals between the brain and the muscles, resulting in paralysis below the level of injury. Restoration of limb function as well as regulation of organ function are the main application of FES, although FES is also used for treatment of pain, pressure, sore prevention, etc.

Some examples of FES applications involve the use of Neuroprostheses that allow people with paraplegia to walk*, stand, restore hand grasp function in people with quadriplegia, or restore bowel and bladder function.
http://en.wikipedia.org/wiki/Functional_electrical_stimulation

* and cycle using their legs on a 3 wheeler.
« Last Edit: 13/01/2010 23:07:58 by RD »

thedoc

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« Last Edit: 19/01/2010 19:06:49 by _system »

daviduzago

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Re: Can we create artificial nerve signals?
« Reply #5 on: 26/07/2014 14:37:21 »
If I may ask, I understand the fact that is already possible to create artificial nerve impulses for muscles. But is it possible to create artificial electric and chemical signals (impulses) for vision, smell, taste, etc.

Thanks.

David U. Zago

 

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