News tagged with nerve impulses
Light now in sight: Control of a 'blind' neuroreceptor with an optical switch
When nerve cells communicate with one another, specialized receptor molecules on their surfaces play a central role in relaying signals between them. A collaborative venture involving teams of chemists based at Ludwig-Maximilians-Universitat ...
Jan 10, 2012 |
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Hold that thought? Scientists find sensor that may explain working memory
(Medical Xpress) -- In many cases, a delay occurs between the time you are presented information and the time you respond with an action or decision. Most of us call it a thought, while some scientists call it working memory.
Medicine & Health / Neuroscience
Dec 21, 2011 |
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How muscle fatigue originates in the head
The extent to which we are able to activate our muscles voluntarily depends on motivation and will power or the physical condition and level of fatigue of the muscles, for instance. The latter particularly ...
Medicine & Health / Neuroscience
Dec 05, 2011 |
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Improved method of electrical stimulation could help treat damaged nerves
Functional electrical stimulation (FES) was developed to help return lost function to patients with upper and lower extremity injuries and spinal cord injuries, among other applications. However, the devices, which work by ...
Nov 21, 2011 |
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With training, a failing sense of smell can be reversed
In a new study scientists at NYU Langone Medical Center have shown that the sense of smell can be improved. The new findings, published online November 20, 2011, in Nature Neuroscience, suggest possible ways to reverse the lo ...
Medicine & Health / Neuroscience
Nov 20, 2011 |
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Protecting the brain when energy runs low
Researchers from the Universities of Leeds, Edinburgh and Dundee have shed new light on the way that the brain protects itself from harm when 'running on empty.'
Medicine & Health / Neuroscience
Oct 17, 2011 |
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Researchers identify signals triggering dendrite growth
A study in worms that are less than a millimetre long has yielded clues that may be important for understanding how nerves grow.
Sep 20, 2011 |
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Gene responsible for three forms of childhood neurodegenerative diseases found
A Montreal-led international team has identified the mutated gene responsible for three forms of leukodystrophies, a group of childhood-onset neurodegenerative disorders. Mutations in this gene were identified in individuals ...
Sep 12, 2011 |
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Excitation and inhibition remain balanced, even when the brain undergoes reorganization
Every second, the brain's nerve cells exchange many billions of synaptic impulses. Two kinds of synapses ensure that this flow of data is regulated: Excitatory synapses relay information from one cell to the next, while inhibitory ...
Medicine & Health / Neuroscience
Sep 07, 2011 |
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Starving inflammatory immune cells slows damage caused by multiple sclerosis
In a paper published today in the journal Scientific Reports, a pair of researchers at the University of California, San Diego Skaggs School of Pharmacy and Pharmaceutical Sciences report that inhibiting the ab ...
Sep 01, 2011 |
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Scientists uncover gene network responsible for repair of the central nervous system of the fruit fly
A gene network that controls repair to the central nervous system (CNS) after injury has been discovered in the fruit fly, Drosophila, by scientists at the University of Birmingham. This breakthrough ...
Aug 31, 2011 |
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Potential impact of cinnamon on multiple sclerosis studied
A neurological scientist at Rush University Medical Center has received a grant from the National Institutes of Health (NIH) to evaluate whether cinnamon, a common food spice and flavoring material, may stop the destructive ...
Jun 22, 2011 |
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Study compares two types of botulinum toxin for cosmetic use
Not all varieties of botulinum toxin seem to be equally effective in reducing crow's feet wrinkles, according to a report published Online First today by Archives of Facial Plastic Surgery.
Jun 20, 2011 |
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Most patients stop drugs for essential tremor after deep brain stimulation surgery
Deep brain stimulation, a surgical procedure to suppress faulty nerve signals, allowed 77 percent of patients to stop the medications used to treat their essential tremors within one year following the surgery, University ...
Medicine & Health / Neuroscience
Apr 07, 2011 |
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Neuro signals study gives new insight into brain disorders
Research into how the brain transmits messages to other parts of the body could improve understanding of disorders such as epilepsy, dementia, multiple sclerosis and stroke.
Medicine & Health / Neuroscience
Mar 14, 2011 |
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Action potential
An 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.
For more information about Action potential, read the full article at
Wikipedia.
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