News tagged with oscillations

Resetting the metabolic clock

We've all heard about circadian rhythm, the roughly 24-hour oscillations of biological processes that occur in many living organisms. Yet for all its influence in many aspects of our lives—from sleep to ...

Jan 29, 2014
popularity 4.2 / 5 (11) | comments 0 | with audio podcast

Brain waves encode information as time signals

How information is processed and encoded in the brain is a central question in neuroscience, as it is essential for high cognitive function such as learning and memory. Theta-gamma oscillations are "brain ...

Dec 16, 2013
popularity 3.7 / 5 (3) | comments 0

Schizophrenia linked to abnormal brain waves

Schizophrenia patients usually suffer from a breakdown of organized thought, often accompanied by delusions or hallucinations. For the first time, MIT neuroscientists have observed the neural activity that ...

Oct 16, 2013
popularity 4.9 / 5 (14) | comments 6 | with audio podcast

How sleep helps brain learn motor task

You take your piano lesson, you go to sleep and when you wake up your fingers are better able to play that beautiful sequence of notes. How does sleep make that difference? A new study helps to explain what ...

Aug 20, 2013
popularity 4.3 / 5 (6) | comments 2 | with audio podcast

Observing live gene expression in the body

Most of our physiological functions fluctuate throughout the day. They are coordinated by a central clock in the brain and by local oscillators, present in virtually every cell. Many molecular gearwheels of this internal ...

Jun 30, 2013
popularity not rated yet | comments 0

New non-invasive method for brain research

Neuroscientists at the University of Tübingen have become the first to record neuromagnetic activity in the millisecond-by-millisecond range while the brain of a human subject was under stimulation by electric current. Electric ...

Jun 24, 2013
popularity 4.7 / 5 (7) | comments 0

Sound stimulation during sleep can enhance memory

Slow oscillations in brain activity, which occur during so-called slow-wave sleep, are critical for retaining memories. Researchers reporting online April 11 in the Cell Press journal Neuron have found that p ...

Apr 11, 2013
popularity 4.6 / 5 (5) | comments 0 | with audio podcast

Oscillation

Oscillation is the repetitive variation, typically in time, of some measure about a central value (often a point of equilibrium) or between two or more different states. Familiar examples include a swinging pendulum and AC power. The term vibration is sometimes used more narrowly to mean a mechanical oscillation but sometimes is used to be synonymous with "oscillation". Oscillations occur not only in physical systems but also in biological systems and in human society.

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