nerve impulses
Electrical brain messages
Nerve impulses are electrical signals that travel along nerve cells, carrying information through the nervous system.
The brain sends nerve impulses to muscles to trigger movement; sensory nerves send impulses back to report what the body feels.
Nerve impulses travel at speeds up to 250 miles per hour.
- saltatory conductionImpulse jumping between myelin gaps
- action potentialNeuron's rapid electrical discharge
- depolarizationLoss of electrical gradient
- brainSeat of cognition
- nodes of RanvierGaps in nerve insulation
axon · synapse · electricity · rapid fire · potassium channels · reflex · fight or flight · pain signals · myelin · dendrite · refractory period · firing · lightning · split second · tingling · threshold · voltage · sodium
- nervous systembrain, spinal cord, axon, dendrite, synapse
- neuroscienceMRI, brain, synapses, dendrite, neurotransmitters
- body signalsheartbeat, pulse, brainwaves, brain waves, brainwave
- bioelectricityaction potential, depolarization, repolarization, hyperpolarization, axon
- Bioelectricsbioelectricity, electrotherapy, electrical stimulation, action potential, depolarization
- nerve signalsaction potential, depolarization, repolarization, firing, threshold potential
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