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A transcutaneous electrical nerve stimulation (TENS or TNS) is a device that produces mild electric current to stimulate the nerves for therapeutic purposes.TENS, by definition, covers the complete range of transcutaneously applied currents used for nerve excitation, but the term is often used with a more restrictive intent, namely, to describe the kind of pulses produced by portable ...
The 1st recorded use of electrical stimulation for pain relief goes back to 46 AD, when Scribonius Largus used torpedo fish (electric ray) for relieving headaches. [47] In the late 18th century, Luigi Galvani discovered that the muscles of dead frog legs twitched when struck by direct current on the nervous system. [ 48 ]
However, the potential seriousness of the shock depends on paths through the body that the currents take. [14] If the voltage is less than 200 V, then the human skin, more precisely the stratum corneum , is the main contributor to the impedance of the body in the case of a macroshock —the passing of current between two contact points on the skin.
[25] [26] It was discovered that the body functions induced by electrical stimulation caused long-term changes in the muscles. [27] [28] In the 1960s, Soviet sport scientists applied EMS in the training of elite athletes, claiming 40% force gains. [29] In the 1970s, these studies were shared during conferences with the Western sport establishments.
Electrical stimulation had been utilized as far back as ancient Egypt, when it was believed that placing torpedo fish in a pool of water with a human was therapeutic. FES – which involves stimulating the target organ during a functional movement (e.g., walking, reaching for an item) – was initially referred to as functional electrotherapy ...
Stifling heat blanketed tens of millions of people in United States on Tuesday, forcing people and even zoo animals to find ways to cool down as summer arrives in what promises to be a sweltering ...
Happy back to school! Parents, teachers and students, find funny and motivational back-to-school quotes about education, learning and working with others.
Experts say policy change and activism are key to stemming 100,000-unit loss. ... ‘Tens of thousands of units have been lost’: Rich New Yorkers are making the city's housing crisis worse by ...
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