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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 ...
This is distinct from transcutaneous electrical nerve stimulation (TENS), in which an electric current is used for pain therapy. "The main difference is the desired outcome. TENS unit is a medical device for pain relief. The desired outcome is to reduce pain by stimulating different nerve signals.
The body's electrical capabilities were studied at least as early as 1830, when the Italian Carlo Matteucci is credited as being one of the first to measure the electrical current in injured tissue. Bioelectricity received less attention after the discovery of penicillin , when the focus of medical research and treatments turned toward the body ...
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.
The International Organization for Migration (IOM) urged countries to step up their donations in response to the world's largest displacement crisis in Sudan, warning on Tuesday that inaction ...
A measure of the heating effect is the specific absorption rate or SAR, which has units of watts per kilogram (W/kg). The IEEE [ 8 ] and many national governments have established safety limits for exposure to various frequencies of electromagnetic energy based on SAR , mainly based on ICNIRP Guidelines, [ 9 ] which guard against thermal damage.
About 20.5 million elementary and secondary school-aged kids in the United States ride school buses to and from school each day. And when something goes wrong — a crash, a reckless driver — it ...
Body capacitance was a significant nuisance when tuning the earliest radios; touching the tuning knob controlling the tuner's variable capacitor would couple the body capacitance into the tuning circuit, slightly changing its resonant frequency. Design of such circuits intended to be adjusted by a user must prevent interaction of the user's ...
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