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
Mathematical model of a simple circuit in a chicken brain raises fundamental questions
Dec 01, 2009 |
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(PhysOrg.com) -- The Web site Neuroanthropology asks visitors to complete this quote, "One of the difficulties in understanding the brain is ...". In addition to the typical facetious remarks, such as "so ...
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.
Applause for the SmartHand
Nov 04, 2009 |
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In one sense, our hands define our humanity. Our opposable thumbs and our hands' unique structure allow us to write, paint, and play the piano. Those who lose their hands as a result of accident, conflict ...
Two molecules affecting brain plasticity
Medicine & Health / Neuroscience
Nov 25, 2009 |
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(PhysOrg.com) -- You wouldn't want a car with no brakes. It turns out that the developing brain needs them, too.
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 ...
New source discovered for the generation of nerve cells in the brain
Medicine & Health / Neuroscience
Dec 01, 2009 |
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The research group of Professor Magdalena Gotz of Helmholtz Zentrum Munchen and Ludwig-Maximilians-Universitat Munich (Germany) has made a significant advance in understanding regeneration processes in the brain. The researchers ...
Researchers find explanation for rapid maturation of neurons at birth
Medicine & Health / Neuroscience
Nov 17, 2009 |
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At the moment a newborn switches from amniotic fluid to breathing air, another profound shift occurs: nerve cells in the brain convert from hyperexcitability to a calm frame against which outside signals can be detected.
New Down syndrome treatment suggested by study in mice
Nov 18, 2009 |
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At birth, children with Down syndrome aren't developmentally delayed. But as they age, these kids fall behind. Memory deficits inherent in Down syndrome hinder learning, making it hard for the brain to collect experiences ...
Fatty acids clue for Alzheimer's
Medicine & Health / Neuroscience
Nov 13, 2009 |
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(PhysOrg.com) -- The amount of fatty acids in the brain varies between healthy people and those with Alzheimer's according to new research from the University of Bristol, UK, supported by the Alzheimer's Research ...
Review: Reports on Pfizer drug studies misleading
Medicine & Health / Medications
Nov 11, 2009 |
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(AP) -- Analysis of a dozen published studies testing possible new uses for a Pfizer Inc. epilepsy drug found that reporting of the results was often fudged, indicating the medicine worked better than internal company documents ...
Scientists decipher the formation of lasting memories
Medicine & Health / Neuroscience
Nov 10, 2009 |
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Researchers Researchers at the Swedish medical university Karolinska Institutet have discovered a mechanism that controls the brain's ability to create lasting memories. In experiments on genetically manipulated mice, they ...
Engineers Will Create Planetary Rover From Retinal Implant Test Robot
Nov 11, 2009 |
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(PhysOrg.com) -- The research, led by Wolfgang Fink, will aid both people with visual impairments and scientists involved in planetary exploration.
Findings could speed the development of drugs for Parkinson's disease
Medicine & Health / Neuroscience
Nov 18, 2009 |
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Australian scientists have significantly advanced our understanding of dopamine release from nerve cells, findings that should speed the development of more effective drugs for treating Parkinson's Disease.
New discovery about the formation of new brain cells
Nov 23, 2009 |
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The generation of new nerve cells in the brain is regulated by a peptide known as C3a, which directly affects the stem cells' maturation into nerve cells and is also important for the migration of new nerve cells through ...
Study shows neural stem cells in mice affected by gene associated with longevity
Nov 05, 2009 |
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(PhysOrg.com) -- A gene associated with longevity in roundworms and humans has been shown to affect the function of stem cells that generate new neurons in the adult brain, according to researchers at the Stanford University ...
