News tagged with nerve impulses

Related topics: nerve cells

The brain's forgotten glial cells

For a long time, researchers have neglected the 100 million glial cells found in our brains, but that is no longer the case. Now they have discovered that the glial cells cleanse the brain of waste.

Oct 10, 2014
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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
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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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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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