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action potential
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action potential

In biology, a change in the potential difference (voltage) across the membrane of a nerve cell when an impulse passes along it. A change in potential (from about −60 to +45 millivolts) accompanies the passage of sodium and potassium ions across the membrane.
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Just as DNA, the bearer of genetic information, eventually yielded its informational language to scientific code breakers, researchers believe that nervous system spike trains will soon reveal themselves as the neural equivalents of words and sentences.
Neural code breakers: what language do neurons use to communicate? by Lipkin, Richard / Science News
Standard neurophysiological theory holds that the number of spikes in the spike train determines the message the neuron sends: A very intense, staccato burst of nerve firing might be the strong signal generated by a bright visual pattern, for instance.
A new view of vision: two scientists present a startling theory about ... by Vaughan, Christopher / Science News
 
 
 
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