how fast do electric impulses travel across our brain and nervous system?
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Transmission can be as slow as 0.5 meters/sec or as fast as 120 meters/sec.
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roughly 11 meters per second, or 24 miles an hour.\n;o)
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IN OUR BODY IT IS RELATED TO THE TRANSMISSION OF NERVE IMPULSE.BUT TO DEFINE IT TAKES A LOT OF TIME. HOPE U R SATISFIED WITH THE ANS.
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The brain floats in a cushion of cerebral fluids and when a blow is strong enough to overcome the cushioning, the brain is diffusely affected; the whole brain is shocked. The brain can spend up to a week in hyper-metabolic activity, taking in many nutrients, before it recovers.
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Interesting. The brain is a bundle of neurons, but it has no "feeling" itself.  An electrode inserted into the brain is painless.
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the soul is the electrical current that runs your brain. so about  1 inch.
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Tasting, smelling, seeing, hearing, thinking, dreaming, breathing, heart beating, moving, running, sleeping, laughing, singing, remembering, feeling pain or pleasure, painting, writing...you couldn't do any of these things without your central nervous system! \n\nWhat is the nervous system? \nMade up of your brain, your spinal cord, and an enormous network of nerves that thread throughout your body, it's the control center for your entire body. Your brain uses information it receives from your nerves to coordinate all of your actions and reactions. Without it, you couldn't exist! \n\nWhat are nerves? \nThey're the thin threads of nerve cells, called neurons that run throughout your body. Bundled together, they carry messages back and forth just the way that telephone wires do. Sensory nerves send messages to the brain and generally connect to the brain through the spinal cord inside your backbone. Motor nerves carry messages back from the brain to all the muscles and glands in your body. \n\nSo how do they they pass along messages? \nThrough the marvels of chemistry and a kind of electricity! Neurons are thin. Some are very small, and some can be three feet long! All are shaped somewhat like flat stars which have, to varying degrees, been pulled at each end so that they have long fingers. The fingers of one neuron almost reach to the next neuron. \n\nWhen a neuron is stimulated -- by heat, cold, touch, sound vibrations or some other message -- it begins to actually generate a tiny electrical pulse. This electricity and chemical change travels the full length of the neuron. But when it gets to the end of finger-like points at the end of the neuron, it needs help getting across to the next extended finger. That's where chemicals come in. The electrical pulse in the cells triggers the release of chemicals that carry the pulse to the next cell. And so on and so on and so on. \n\nSource(s):\n\nsearch engine: ask.com\nkey words: The Nervous System\n(This is pretty broad in nature, is there a specific question related to an answer you need that I can help you with?\nohhhhhh...nurse?????
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Auditory reflexes are faster.  From the link:\n\n"For about 120 years, the accepted figures for mean simple reaction times for college-age individuals have been about 190 ms (0.19 sec) for light stimuli and about 160 ms for sound stimuli (Galton, 1899; Fieandt et al., 1956; Welford, 1980; Brebner and Welford, 1980)."\n\nThere's a lot of other good info on the link.\n\nThe first two answers look at the speeds of sound and light, which are not related to the speeds at which you brain processes a stimulus upon the arrival of the stimulus to the sensory organ.  The previous answer (from evilfiremonk) which states that neurons are all the same is dead wrong.  The speed of impulse propagation depends on the size of the neuron, the myelination (or lack thereof), the number of synapses and the types of synapses between the source and endpoint, and the directness of the pathway to the decision centers of the brain, and over-all path length will result affect the total time for a signal to reach its destination.
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Well, the pulse is the blood passing in your arteries.  It speeds follows the beating of the heart.  The rate of the heart is controled mainly by the hypothalamus that reacts to the blood need in the brain.
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Saltatory transmission and non saltatory transmissions.Saltatory transmission happens in myelinated neurons, the impulse jumps from one node of Ranvier to the next one. It is faster than the non saltatory one that happens in the unmyelinated neuron where the impulse travels throughout the whole axon.
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Yes for instance your nervous system is an electrical system and electricity is effected by electric magnetic pulls.
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Sound travels at approximately 720 miles per hour. Light travels at 186,000 miles per second.
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The direction of a nerve impulse is as follows: dendrite, cell body, axon. Dendrites are short extensions and axons are the longer ones. Once the impulse gets to the end of the axon, it travels through the synapse and then on to the dendrites of the following neuron. Within the neuron the impulse travels electrically with the resting potential changing to the action potential. In between neurons, through the synapse, the impulse is propagated chemically with the release of a neurotransmitter from the synaptic vesicles in the end of the axon . The neurotransmitter binds to receptors on the dendrite of the next neuron which starts the action potential there.
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That's not true.  The brain gets the biggest hit.  That's why they're called EMOTIONAL.  As far as the other organs, you have to define how you measure "effect".  That is, everything gets kicked a little during an emotional wave, adrenals, muscles (including the heart), circulatory system, etc.  Just because the heart rate is the easiest to detect does not necessarily mean that it gets a bigger jolt than anything else.
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Most nerves can only fire at about 50 times per second.\n\nNerves both conduct electricity and they produce it.\n\nThere are some nerves that extend from the feet all the way to the brain, making the cells over 5 feet long in some people.\n\nWhile the signal in the nerve is electrical, the signal is tranmitted to other nerves only chemically, using neurotransmitters in the synapsis.\n\nA nerve can only fire or not fire. There is no partial signal transmitted. Analog information is created by frequency of firings, and combinations of nerves firing.
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nerve cells(neurons) carry electrical signals through the body through the use of dentrites and axons, dentrites usually recieve signals and axons send signals although dentrites can send signals too, the cells relay messages between the brain and muscles and tell the muscles to move.\n\nWhen sending a message neurons send the eletrical signal through the axon into a synapse, then the signal goes into the dentrites of another neuron
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Transmission of the signal requires a complete cellular membrane, because the signal is a waveform traveling along that membrane.  Cutting the axon (which is done in studying axonal regrowth and regeneration) disrupts the membrane integrity, thus no signal can pass this point.  In some neurons, the axon can travel as much as 3 feet, and damage done at the proximal end of the axon can take months to regrwo.  However, if you are talking about loss of the presynaptic terminal only (as occurs in some diseases), then reconnection could occur within hours or days.