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| | Electrical conduction: Just the facts... |
 | | Whether a material conducts or not is determined by its band structure (additional info and facts about band structure). | | | A solid with filled bands is an insulator, but at finite temperature, electrons can be thermally excited from the valence band (additional info and facts about valence band) to the next highest, the conduction band (additional info and facts about conduction band). | | | Exciting these electrons into the conduction band leaves behind positively charged hole (An opening deliberately made in or through something) s in the valence band, which can also conduct electricity. |
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http://www.absoluteastronomy.com/encyclopedia/e/el/electrical_conduction.htm
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| | Bagatellen: Conduction in Improvised Music - The London Improvisers Orchestra |
| | With the conduction of large improvising ensembles, the interpretation of a composition is dispensable. | | | Conduction in Improvised Music - The London Improvisers Orchestra | | | Bagatellen: Conduction in Improvised Music - The London Improvisers Orchestra |
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http://www.bagatellen.com/archives/features/000095.html
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| | Band Theory for Solids |
| | In insulators the electrons in the valence band are separated by a large gap from the conduction band, in conductors like metals the valence band overlaps the conduction band, and in semiconductors there is a small enough gap between the valence and conduction bands that thermal or other excitations can bridge the gap. | | | In the band theory, this is depicted as an overlap of the valence band and the conduction band so that at least a fraction of the valence electrons can move through the material. | | | For intrinsic semiconductors like silicon and germanium, the Fermi level is essentially halfway between the valence and conduction bands. |
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http://hyperphysics.phy-astr.gsu.edu/hbase/solids/band.html
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| | Atresia/Microtia Bone Conduction Hearing Aids |
| | Another disadvantage, which is specific to hearing by "bone conduction," is that the listener hears in "mono." When the bone is vibrated in any location, the sound travels to both inner ears at almost the same time. | | | As with any other hearing aid, the quality of sound from a bone conduction hearing aid is not perfect. | | | If we say the bone conduction aid sounds like a telephone, then the BAHA® would sound more like a good quality FM radio (tuned into a clear station of course). |
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http://www.pde.com/~kazemir/HearingAids.htm
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| | The Bone Conduction Music Show |
| | It is the music that moves through you like electricity, the music that uses you as lightning rod, the music that causes you to shake your tailfeather. | | | The Bone Conduction Music Show is a white hot mega blast of wig singeing Rock and Roll, hip shakin' Soul music, and industrial strength Rhythm and Blues. | | | The Bone Conduction Music Show is a labor of love. |
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http://www.thayrone.com
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| | Download Conduction Band: π^e/2 - 10 Louder |
| | All of the tracks from Conduction Band's Goodwin Road album are also available here as mp3 files. | | | Following in the footsteps of REO Speedwagon is no small feat, but that was Conduction Band's quest. | | | Conduction Band goes all the way to π |
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http://guava.physics.uiuc.edu/~tae/conductionband
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| | Fermi level and Fermi function |
| | The band theory of solids gives the picture that there is a sizable gap between the Fermi level and the conduction band of the semiconductor. | | | For the conductor, the density of states can be considered to start at the bottom of the valence band and fill up to the Fermi level, but since the conduction band and valence band overlap, the Fermi level is in the conduction band so there are plenty of electrons available for conduction. | | | Because of the larger band gap, there will be fewer conduction electrons in silicon than germanium for any given temperature. |
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http://hyperphysics.phy-astr.gsu.edu/hbase/solids/fermi.html
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| | CONDUCTION PROCESS |
| | bonds are broken, the electrons move to the conduction band where they are capable of supporting | | | Since hole flow results from the breaking of covalent bonds, which are at the valence band | | | However, the electrons associated with electron flow have conduction band |
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http://www.tpub.com/content/neets/14179/css/14179_24.htm
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| | Conductors |
| | Atoms with a full outside track which is very close to the next empty track are semiconductors. | | | And third, some of the bands are closer to each other than others. | | | Materials which do conduct electricity, like copper, are called conductors. |
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http://www.pbs.org/transistor/science/info/conductors.html
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| | Conduction |
| | This is why if you throw a piece of copper and a piece of concrete into a campfire, the copper will heat up much more quickly than the concrete. | | | Let us consider two substances at different temperatures separated by a barrier which is subsequently removed, as in the following figure. | | | Conversely, materials with low thermal conductivities will transfer small amounts of heat over time - these materials, like concrete, are poor thermal conductors. |
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http://theory.uwinnipeg.ca/mod_tech/node75.html
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| | Right Ventricular Myocardial Responses to Chronic Pulmonary Regurgitation in Lambs: Disturbances of Activation and ... |
| | Woodard JC, Bertram CD, Gow BS 1987 Right ventricular volumetry by catheter measurement of conductance. | | | conductance catheter technique, which we consider to be an acceptable | | | Derrick GP, Narang I, White PA, Kelleher A, Bush A, Penny DJ, Redington AN 2000 Failure of stroke volume augmentation during exercise and dobutamine stress is unrelated to load-independent indexes of right ventricular performance after the Mustard operation. |
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http://www.pedresearch.org/cgi/content/full/54/4/529
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| | SwiMP3 |
| | Instead the SwiMP3 uses bone conduction to deliver audio. | | | Clear sound cannot be guaranteed by this method because of the turbulance created as a swimmer glides through the water. | | | Bone conduction stimulates the fluids in the inner ear through any of the bones of the skull. |
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http://www.mp3newswire.net/stories/2004/swimp3.html
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| | foil insulation, conduction heat transfer - Innovative Insulation |
| | The figures below show modes of heat loss by houses. | | | An example of conduction through contact between two solids is a cooking pot on the solid surface of a hot stove. | | | It results from actual PHYSICAL CONTACT of one part of the same body with another part, or of one body with another. |
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http://www.radiantbarrier.com/physics_of_foil.htm
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| | Hearing aids — Baha - bone anchored hearing aids |
| | The Baha® System combines a sound processor with a small titanium fixture implanted behind the ear. | | | Safe and effective, Baha is used to aid people with chronic ear infections, congenital hearing loss and single sided deafness. | | | The system allows sound to be conducted through the bone rather than via the middle ear — a process known as direct bone conduction. |
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http://www.entific.com/aboutBAHA.asp
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| | Implantable Bone Conduction Hearing Aids |
| | Cochlear Implant, TRG Medical Policy Manual, Surgery Policy No. 8 | | | External bone conduction hearing aids function by transmitting sound waves through the bone to the ossicles of the middle ear. | | | Although no longer marketed, the Audiant™ bone conductor was a device approved by the U.S. Food and Drug Administration (FDA) that consisted of an external processor that used transcutaneous inductive electromagnetic energy to cause vibration of an implanted titanium magnet screwed into the temporal bone. |
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http://www.regence.com/trgmedpol/surgery/sur121.html
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| | MDA / Quest Vol 7 No 5 / Simply Stated . . . |
| | In NCV and EMG, these tiny electrical events are amplified electronically, then visualized on a TV-like monitor called an oscilloscope and even heard using audio equipment. | | | The other electrodes record the action potential as it's conducted through the nerve. | | | Conduction speed is influenced by a coating around axons, called myelin. |
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http://www.mdausa.org/publications/Quest/q75ss.html
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| | Bone conduction - Wikipedia, the free encyclopedia |
| | Described as equivalent to hearing directly using your ears, a headset is ergonomically positioned on the temple and cheek and the electromechanical transducer, which converts electric signals into mechanical vibrations, sends sound to the internal ear through the cranial bones. | | | Bone conduction is the conduction of sound to the inner ear through the bones of the skull. |
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http://en.wikipedia.org/wiki/Bone_conduction
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| | HEARING BY BONE CONDUCTION |
| | These antiresonances cause transcranial attenuation of up to 40 dB, resulting in a perceived sound lateralization. | | | Although there is linear transmission for normal sound levels in the skull, bone conducted sound can be severely affected by structural characteristics such as the antiresonances of the skull. | | | A bone-anchored hearing system with the transducer implanted offers some potential advantages, not only for current users of the bone-anchored hearing aid but also for sensorineural hearing impaired people who use air conduction aids. |
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http://www.s2.chalmers.se/~stenfelt/baha/abstract/stenfelt_thesis.html
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| | Charging by Conduction |
| | In human terms, electrons living in the same home despise each other and are always seeking a home of their own or at least a home with more rooms. | | | And if a conducting pathway is made between an electron and an excess proton, one can be certain that there is likely an electron which would be willing to take the pathway. | | | There was not a sharing of charge between the plastic tube and the metal parts of the electroscope. |
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http://www.glenbrook.k12.il.us/gbssci/phys/Class/estatics/u8l2c.html
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| | conduction - Columbia Encyclopedia® article about conduction |
| | It is electrically conductive and is affected by magnetic fields. | | | Metals, which have a high free-electron density, are good conductors of heat, while nonmetals, such as wood or glass, have few free electrons and do not conduct as well. | | | ; electrolysis electrolysis (ĭlĕktrŏl`əsĭs), passage of an electric current through a conducting solution or molten salt that is decomposed in the process. |
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http://columbia.thefreedictionary.com/conduction
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| | Re: bone conduction aids |
| | Bone conduction hearing aids, as the name suggests, transmit the acoustic signal via a bone oscillator usually placed on the mastoid bone of the hearing aid user. | | | Persons with conductive hearing impairments, who have normal bone conduction thresholds are likely to benefit most with the use of these devices. | | | The frequency response of bone conduction hearing aids, in general is narrow in comparison to that of the traditional air conduction aids. |
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http://www.audiologyawareness.com/hhelp/qna/archive/index.cgi?read=60
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| | convection, conduction, and radiation |
| | They only feel colder because they conduct heat away from your hand. | | | Because there are no solids (like a huge spoon) touching the sun and our planet, conduction is not responsible for bringing heat to Earth. | | | Conduction is most effective in solids-but it can happen in fluids. |
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http://www.mansfieldct.org/schools/mms/staff/hand/convcondrad.htm
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| | Identifying Drug-Induced Changes in Electrocardiogram Results of Elderly Individuals |
| | Artifact: Mechanically or electrically produced extraneous spikes and waves recorded on an ECG. | | | Thus, the effect on the ECG is prolongation of the QT interval, which may lead to torsade de pointes (see glossary). | | | Similar to those produced by the phenothiazines and class I antiarrhythmics: increased heart rate, prolongation of the PR interval, intraventricular conduction disturbances, increase in QTc interval, and flattening of T waves |
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http://www.ascp.com/public/pubs/tcp/1997/jan/idicerei.html
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| | Diagnosis & Treatment of Motor Neuropathies |
| | Patients with MMN rarely have significant sensory symptoms while in CIDP, sensory signs are the rule. | | | Rarely, patients have had cranial nerve signs including external ophthalmoplegia and unilateral tongue weakness and atrophy. | | | Immunization of rabbits with GM1 may result in the production of a neuropathy with similarities to MMN. |
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http://www.neuro.wustl.edu/neuromuscular/antibody/motpn2.htm
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| | eMedicine - Multifocal Motor Neuropathy With Conduction Blocks : Article by Sasa Zivkovic, MD, MSc |
| | Upper motor neuron signs, such as spasticity, clonus, extensor plantar response, and pseudobulbar palsy are absent. | | | Upper motor neuron signs, including spasticity, clonus, extensor plantar response, and pseudobulbar palsy are absent. | | | Other signs of demyelination may be present, including decreased velocities, prolonged terminal latencies, temporal dispersion, and delayed (or absent) F waves. |
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http://www.emedicine.com/neuro/topic724.htm
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| | PIRA 4B30.00 CONDUCTION |
| | Relative conductivities of bars of metals in a common copper block are indicated by match head ignition or temperature indicating paint. | | | A single length of Nichrome wire runs through two chambers allowing comparison of thermal conductivity of two gases and variation of pressure. | | | Boil water in the top of a test tube while ice is held at the bottom. |
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http://www.physics.ncsu.edu/pira/4therm/4B30.html
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| | Water and Electrical Conduction |
| | Vince Calder ===================================================== Completely demineralized water actually does not conduct electricity, and is widely used as a coolant in high powered radio amplifiers. | | | None of the ion electrical current carriers of salts dissolved in water are as mobile as "free" electrons in a metal are. | | | Perfectly pure water without these impurities will not conduct electricity. |
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http://www.newton.dep.anl.gov/askasci/gen01/gen01755.htm
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| | How Does Heat Travel? |
| | You can see this in the metal spoon as well. | | | Conduction occurs when two object at different temperatures are in contact with each other. | | | This heat from numerous stars and interstellar clouds traveled about 24,000 light years (about 150,000,000,000,000,000 miles!) through space by radiation to reach our infrared telescopes. |
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http://coolcosmos.ipac.caltech.edu/cosmic_classroom/light_lessons/thermal/transfer.html
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| | Electromyogram (EMG) and Nerve Conduction Studies |
| | Repeated, brief electrical pulses are administered to the nerve, and the time it takes for the muscle to contract in response to the electrical pulse is recorded. | | | They can be used along with a person's history, symptoms, physical and neurological examinations, and the results of other tests to help establish a diagnosis and evaluate how a disease is progressing. | | | Abnormal levels and duration of electrical discharges when a muscle contracts also suggest the presence of a muscle or nerve disorder, such as amyotrophic lateral sclerosis (ALS), post-polio syndrome, or a herniated disc. |
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http://www.webmd.com/hw/brain_nervous_system/hw213852.asp
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| | Heat conduction - Wikipedia, the free encyclopedia |
| | When heat is being conducted from one fluid to another through a barrier, it is sometimes important to consider the conductance of the thin film of fluid which remains stationary next to the barrier. | | | This thin film of fluid is difficult to quantify, its characteristics depending upon complex conditions of turbulence and viscosity, but when dealing with thin high-conductance barriers it can sometimes be quite significant. | | | A is the transversal surface area, Δ x is the thickness of the body of matter through which the heat is passing, 'K' is a conductivity constant dependent on the nature of the material and its temperature, and ΔT is the temperature difference through which the heat is being transferred. |
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http://en.wikipedia.org/wiki/Heat_conduction
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| | Osseointegration and bone conduction |
| | The Baha® sound processor is based on the principle of Direct Bone Conduction (DBC). | | | The Baha system is a combination of a sound processor attached to an osseointegrated fixture. | | | The principle of Direct Bone Conduction is what makes Baha unique. |
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http://www.entific.com/directBoneConduction.asp
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| | JetStream - An Online Weather School: The Transfer of Heat Energy |
| | As the rock's temperature rises due to conduction, heat energy is released into the atmosphere, forming a bubble of air which is warmer than the surrounding air. | | | Also, when objects are welded together, the metal becomes hot (the orange-red glow) by the transfer of heat from an arc. | | | This is called conduction and is a very effective method of heat transfer in metals. |
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http://www.srh.noaa.gov/srh/jetstream/atmos/heat.htm
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| | Lesson VI - ECG Conduction Abnormalities |
| | Degree AV Block: PR interval > 0.20 sec; all P waves conduct to the ventricles. | | | The following rhythm strip illustrates SA Wenckebach with a ladder diagram to show the progressive conduction delay between SA node and the atria. | | | PP intervals fairly constant (unless sinus arrhythmia present) until conduction failure occurs. |
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http://medstat.med.utah.edu/kw/ecg/ecg_outline/Lesson6
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| | Heat Conduction |
| | For a rectangular body it is also known to scale in proportion to the cross sectional area of the body perpendicular to the temperature gradient and to scale inversely with the distance over which the temperature difference exists. | | | The rate at which heat is transferred through a material body is known empirically to be proportional to the temperature difference across the body. | | | This is known as the law of heat conduction and is expressed in the following mathematical form: |
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http://www.physics.nmt.edu/%7Eraymond/classes/ph13xbook/node229.html
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| | Conduction - Wikipedia, the free encyclopedia |
| | This is a disambiguation page — a list of articles associated with the same title. | | | Conduction is the transmission of an entity through a medium. | | | Nerve conduction -- the conduction of signals along nerve cells |
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http://en.wikipedia.org/wiki/Conduction
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| | Targeted Activation of c-Jun N-terminal Kinase in Vivo Induces Restrictive Cardiomyopathy and Conduction Defects -- ... |
| | with previous reports of conduction slowing in mice in which | | | A, representative electrocardiogram and action potential tracings recorded during ventricular stimulation at 130-ms cycle length display a broadening of paced QRST complex and an increase in APD in MKK7D hearts. | | | B, representative maps of conduction from a point stimulus show relative crowding of isochrones in MKK7D hearts, indicating slowing of conduction velocity. |
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http://www.jbc.org/cgi/content/full/279/15/15330
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| | Viscosity and Thermal Conduction |
| | It means "there is more to learn here than I originally thought." So now the thing to do is to think of other experiments that one could do in order to learn more about which properties of a liquid affect its ability to conduct heat. | | | Another possibility might be to investigate more liquids and see whether these were unusual cases (exceptions which prove the rule, so to speak). | | | A viscous liquid may conduct heat just as readily as one which is not viscous. |
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http://www.newton.dep.anl.gov/askasci/gen01/gen01745.htm
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| | Ocean 540: Conduction |
| | This approach is reversed in order to make heat flow measurements: the temperature gradient is measured with a probe consisting of a number of thermistors which is inserted into sediment; the thermal conductivity is measured (by measuring the response after a thermal perturbation) or estimated from other data; the product yields the heat flow. | | | Far away from the ridge, the differences are of more interest as measured heat flow does not continue to approach zero, but rather approaches an asymptotic value, an important constraint on possible models for secondary convection of the upper asthenosphere. | | | The negative sign reflects that heat is transported in the direction of lower temperature. |
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http://www2.ocean.washington.edu/oc540/lec01-3
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| | Neuroscience for Kids - Conduction Velocity |
| | First you will feel the touch sensation of your toe hitting the ground. | | | This is because the information related to your toe touching the ground is carried by the large, fast conducting A-beta nerve fibers...this reaches your brain first. | | | The large A-beta nerve fibers, which transmit information related to touch, can have action potentials traveling near the speeds of airplanes. |
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http://faculty.washington.edu/chudler/cv.html
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