News tagged with nerve impulses

Related topics: nerve cells

Controlling our circadian rhythms

Most people have experienced the effects of circadian-rhythm disruption, after traveling across time zones or adjusting to a new schedule. To have any hope of modulating our biological "clocks," to combat ...

Nov 25, 2013
popularity 3.5 / 5 (2) | comments 0

Schizophrenia: It's in the wiring of the brain

Just as wires must be insulated to effectively carry electrical impulses, nerve cells must be insulated by myelin to effectively transmit neural impulses. Using typical magnetic resonance imaging or MRI, one can visually ...

Sep 16, 2013
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Sleep boosts production of brain support cells

Sleep increases the reproduction of the cells that go on to form the insulating material on nerve cell projections in the brain and spinal cord known as myelin, according to an animal study published in the ...

Sep 03, 2013
popularity 4.8 / 5 (4) | comments 0 | with audio podcast

Putting the brakes on pain

Neuropathic pain—pain that results from a malfunction in the nervous system—is a daily reality for millions of Americans. Unlike normal pain, it doesn't go away after the stimulus that provoked it ends, and it also behaves ...

Aug 05, 2013
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The secret lives, and deaths, of neurons

As the human body fine-tunes its neurological wiring, nerve cells often must fix a faulty connection by amputating an axon—the "business end" of the neuron that sends electrical impulses to tissues or other ...

May 23, 2013
popularity 5 / 5 (3) | comments 0 | with audio podcast

Mystery disease solved by gene experts

(Medical Xpress)—A global team of researchers has identified the gene behind an Australian toddler's paediatric brain disorder in a discovery that is paving the way for the diagnosis and treatment of other ...

May 03, 2013
popularity 4.5 / 5 (2) | comments 1 | with audio podcast

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.

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