Neuroscience

Study reveals fentanyl's effects on the brain

Fentanyl is used to supplement sedation and to relieve severe pain during and after surgery, but it's also one of the deadliest drugs of the opioid epidemic. In research conducted by investigators at Massachusetts General ...

Medical research

Why strength depends on more than muscle

A recent study from the University of Nebraska-Lincoln has given new meaning to the concept of brain power by suggesting that physical strength might stem as much from exercising the nervous system as the muscles it controls.

Psychology & Psychiatry

Ketamine found to increase brain noise

An international team of researchers including Sofya Kulikova, Senior Research Fellow at the HSE University-Perm, found that ketamine, being an NMDA receptor inhibitor, increases the brain's background noise, causing higher ...

Diabetes

Monitoring glucose levels, no needles required

Noninvasive glucose monitoring devices are not currently commercially available in the United States, so people with diabetes must collect blood samples or use sensors embedded under the skin to measure their blood sugar ...

Surgery

US surgeons perform world's first whole eye transplant

A team of surgeons in New York has performed the world's first transplant of an entire eye in a procedure widely hailed as a medical breakthrough, although it isn't yet known whether the man will ever see through the donated ...

Cardiology

Mayo Clinic Minute: Watch for these heart arrhythmia red flags

A heart arrhythmia is an irregular heartbeat. It occurs when the electrical signals that tell the heart when to beat and pump blood aren't functioning properly. Some heart arrhythmias can be harmless and just bothersome, ...

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Electricity

Electricity (from the New Latin ēlectricus, "amber-like"[a]) is a general term that encompasses a variety of phenomena resulting from the presence and flow of electric charge. These include many easily recognizable phenomena, such as lightning and static electricity, but in addition, less familiar concepts, such as the electromagnetic field and electromagnetic induction.

In general usage, the word 'electricity' is adequate to refer to a number of physical effects. However, in scientific usage, the term is vague, and these related, but distinct, concepts are better identified by more precise terms:

Electrical phenomena have been studied since antiquity, though advances in the science were not made until the seventeenth and eighteenth centuries. Practical applications for electricity however remained few, and it would not be until the late nineteenth century that engineers were able to put it to industrial and residential use. The rapid expansion in electrical technology at this time transformed industry and society. Electricity's extraordinary versatility as a source of energy means it can be put to an almost limitless set of applications which include transport, heating, lighting, communications, and computation. The backbone of modern industrial society is, and for the foreseeable future can be expected to remain, the use of electrical power.

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