Nerve
hideA nerve is an enclosed, cable-like bundle of peripheral axons (the long, slender projections of neurons). A nerve provides a common pathway for the electrochemical nerve impulses that are transmitted along each of the axons. Nerves are found only in the peripheral nervous system. In the central nervous system, the analogous structures are known as tracts. Neurons are sometimes called nerve cells, though this term is technically inaccurate since many neurons do not form nerves, and nerves also include non-neuronal Schwann cells that coat the axons in myelin.
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News tagged with nerve
Schizophrenia gene's role may be broader, more potent, than thought
Nov 19, 2009 |
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(PhysOrg.com) -- UCSF scientists studying nerve cells in fruit flies have uncovered a new function for a gene whose human equivalent may play a critical role in schizophrenia.
Bigger not necessarily better, when it comes to brains
Nov 17, 2009 |
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(PhysOrg.com) -- Tiny insects could be as intelligent as much bigger animals, despite only having a brain the size of a pinhead, say scientists at Queen Mary, University of London.
Scientists successfully reprogram blood cells
Nov 09, 2009 |
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Researchers have transplanted genetically modified hematopoietic stem cells into mice so that their developing red blood cells produce a critical lysosomal enzyme -preventing or reducing organ and central nervous system damage ...
Cyborg beetles to be the US military's latest weapon (w/ Video)
Oct 15, 2009 |
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(PhysOrg.com) -- A team of scientists funded by the US Defense Advanced Research Projects Agency (DARPA) have implanted miniature neural and muscle stimulation systems into beetles to enable their flight to ...
One small step for neurons, one giant leap for nerve cell repair
Medicine & Health / Neuroscience
Oct 07, 2009 |
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The repair of damaged nerve cells is a major problem in medicine today. A new study by researchers at the Montreal NeurologicaI Institute and Hospital (The Neuro) and McGill University, is a significant advance towards a ...
Nerve cells live double lives
Medicine & Health / Neuroscience
Oct 06, 2009 |
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(PhysOrg.com) -- Scientists at the Friedrich Miescher Institute for Biomedical Research (part of the Novartis Research Foundation) have identified a new neural circuit in the retina responsible for the detection ...
New study pinpoints gene controlling number of brain cells (w/ Video)
Medicine & Health / Neuroscience
Oct 04, 2009 |
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In populating the growing brain, neural stem cells must strike a delicate balance between two key processes - proliferation, in which the cells multiply to provide plenty of starting materials - and differentiation, in which ...
Schizophrenia gene linked with abnormal neurogenesis in adult and postnatal brain
Medicine & Health / Neuroscience
Sep 23, 2009 |
4.8 / 5 (4) |
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Scientists now have a better understanding of a perplexing gene that is associated with susceptibility for a wide spectrum of severely debilitating mental illnesses. Two independent research studies published by Cell Press ...
Stimulating sight: New retinal implant developed
Sep 23, 2009 |
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(PhysOrg.com) -- Inspired by the success of cochlear implants that can restore hearing to some deaf people, researchers at MIT are working on a retinal implant that could one day help blind people regain a ...
Rethinking Alzheimer's disease and its treatment targets
Medicine & Health / Neuroscience
Sep 22, 2009 |
4.8 / 5 (5) |
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(PhysOrg.com) -- Psychiatry professor George Bartzokis introduces a new theory about the fundamental cause of Alzheimer's and other neurodegenerative diseases.
Scientists make paralyzed rats walk again after spinal-cord injury
Medicine & Health / Neuroscience
Sep 20, 2009 |
4.9 / 5 (22) |
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UCLA researchers have discovered that a combination of drugs, electrical stimulation and regular exercise can enable paralyzed rats to walk and even run again while supporting their full weight on a treadmill.
Researchers program cells to be remote-controlled by light
Sep 14, 2009 |
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(PhysOrg.com) -- UCSF researchers have genetically encoded mouse cells to respond to light, creating cells that can be trained to follow a light beam or stop on command like microscopic robots.
Function of a neglected structure in neurons revealed after 50 years
Sep 08, 2009 |
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(PhysOrg.com) -- Fifty years after it was originally discovered, scientists at the Friedrich Miescher Institute for Biomedical Research, Switzerland, have elucidated the function of a microscopic network of ...
Star-shaped cells in the brain aid with learning
Medicine & Health / Neuroscience
Sep 07, 2009 |
4.9 / 5 (8) |
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(PhysOrg.com) -- Every movement and every thought requires the passing of specific information between networks of nerve cells. To improve a skill or to learn something new entails more efficient or a greater ...
Researchers unravel mystery behind long-lasting memories
Medicine & Health / Neuroscience
Aug 11, 2009 |
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A new study by researchers at Wake Forest University School of Medicine may reveal how long-lasting memories form in the brain.
