Cardiology

IPhone12 will stop your implantable defibrillator

In a recent paper in the journal Heart Rhythm, doctors describe how they turned off the potentially life-saving cardiac defibrillator function of an implanted Medtronic device simply by holding an iPhone 12 near it. The authors ...

Medications

Cannabidiol improves blood flow to brain's hippocampus

A single dose of cannabidiol (CBD) helped increase blood flow to the hippocampus, an important area of the brain associated with memory and emotion, finds a new study led by UCL researchers.

Neuroscience

Study suggests the brain works like a resonance chamber

Researchers at the Champalimaud Foundation and the University of Minho, in Portugal, have found evidence of resonant waves in rat brain activity using ultrafast and ultrahigh field magnetic resonance imaging. Their work demonstrates ...

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Magnetism

In physics, magnetism is one of the forces in which materials and moving charged particles exert attractive, repulsive force or moments on other materials or charged particles. Some well-known materials that exhibit easily detectable magnetic properties (called magnets) are nickel, iron, cobalt, gadolinium and their alloys; however, all materials are influenced to greater or lesser degree by the presence of a magnetic field. Substances that are negligibly affected by magnetic fields are known as non-magnetic substances. They include copper, aluminium, water, and gases.

Magnetism also has other definitions and descriptions in physics, particularly as one of the two components of electromagnetic waves such as light.

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