Action potential
hideAn action potential (or nerve impulse) is a transient alteration of the transmembrane voltage (or membrane potential) across an excitable membrane generated by the activity of voltage-gated ion channels embedded in the membrane. Action potentials play multiple roles in several types of excitable cells such as neurons, myocytes, and electrocytes. The best known action potentials are pulse-like waves of voltage that travel along axons of neurons.
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News tagged with nerve impulses
Nanoelectronic transistor combined with biological machine could lead to better electronics
Aug 10, 2009 |
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(PhysOrg.com) -- If manmade devices could be combined with biological machines, laptops and other electronic devices could get a boost in operating efficiency.
Study gives more proof that intelligence is largely inherited
Medicine & Health / Neuroscience
Mar 17, 2009 |
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They say a picture tells a thousand stories, but can it also tell how smart you are? Actually, say UCLA researchers, it can.
Light instead of current: Activation of neurons with light by means of semiconductor photoelectrodes
Feb 20, 2009 |
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(PhysOrg.com) -- Understanding the mechanisms by which the brain functions is one of the most complex challenges in science. One important aspect is the electrical conduction of stimuli in nerve cells. In order to study neuronal ...
Human ES cells progress slowly in myelin's direction
Apr 09, 2009 |
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Scientists from the University of Wisconsin, USA, report in the journal Development the successful generation from human embryonic stem cells of a type of cell that can make myelin, a finding that opens up new possibilities for bo ...
Carbon nanotube device can detect colors of the rainbow
Nanotechnology / Nanomaterials
Apr 30, 2009 |
5 / 5 (3) |
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Researchers at Sandia National Laboratories have created the first carbon nanotube device that can detect the entire visible spectrum of light, a feat that could soon allow scientists to probe single molecule ...
New light shed on marine luminescence
Biology /
Feb 23, 2009 |
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The phenomenon of light emission by living organisms, bioluminescence, is quite common, especially in marine species. It is known that light is generated by chemical reactions in which oxygen molecules play ...
How Bed Bugs Outsmart the Chemicals Designed to Control Them
Biology /
Jan 08, 2009 |
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(PhysOrg.com) -- Bed bugs, once nearly eradicated in the built environment, have made a big comeback recently, especially in urban centers such as New York City. In the first study to explain the failure to control certain ...
Avastin effective at delaying brain tumor progression in recurrent disease
Apr 06, 2009 |
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The use of Avastin alone to treat a subgroup of recurrent Grade 3 brain tumors showed it was safe and effective at delaying tumor progression, according to a retrospective study of 22 patients conducted by a researcher at ...
