Un video muestra cómo se lava nuestro cerebro mientras dormimos

Ondas de líquido cefalorraquídeo acuoso (LCR) fluyen sobre el cerebro, según muestra un nuevo estudio, pulsando rítmicamente mientras uno duerme. Asimismo, al mismo tiempo se lava al eliminar cualquier toxina que no debería acumularse. Este estudio se publicó en Science.

Los neurocientíficos han creado un video fascinante que muestra este proceso de pulsación nocturna en acción.

El equipo detrás de esta investigación explica que los hallazgos podrían ayudar en el estudio de varios trastornos neurológicos y psicológicos, especialmente en aquellos que están asociados con patrones de sueño interrumpidos.

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Quantum physics: Our study suggests objective reality doesn’t exist

 

 

 

 

 

 

Alternative facts are spreading like a virus across society. Now it seems they have even infected science—at least the quantum realm. This may seem counter intuitive. The scientific method is after all founded on the reliable notions of observation, measurement and repeatability. A fact, as established by a measurement, should be objective, such that all observers can agree with it.

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The universe may be a closed sphere and not a flat plane, a new study says

The researchers call for a ‘drastic rethinking’ of cosmology.

The oldest light in the universe, called the cosmic microwave background, as observed by the Planck space telescope is shown in an oval sky map.
Planck Collaboration/ESA

 

The universe might be curved and closed like an inflating sphere, rather than a flat plane, a new study suggests.

  • The study found that gravity bends the path of the oldest light in the universe — radiation left over from the Big Bang — more strongly than it should.
  • Scientists behind the new study say their findings present a “cosmological crisis” and call for a “drastic rethinking” of current models.
  • Other researchers say flat models of the universe are correct, and that these findings could just be a blip in the data.

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Harvard University Physics Chair Subir Sachdev: “It is Very Harmful to Make False Claims About India’s Contribution” to Science and Technology

 

 

 

 

 

 

 

 

 

CAMBRIDGE, MA— Prof. Subir Sachdev, the Herchel Smith Professor of Physics and Chair of the Department of Physics at Harvard University and one of the top physicists in the area of quantum physics in the world, called on Indian scientists and academicians to speak up against any effort to stifle truth and science even if it puts funding of their institutions in potential jeopardy.

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Physicists Have Found an Entirely New Type of Superconductivity

One of the ultimate goals of modern physics is to unlock the power of superconductivity, where electricity flows with zero resistance at room temperature.

Progress has been slow, but in 2018, physicists have made an unexpected breakthrough. They discovered a superconductor that works in a way no one’s ever seen before – and it opens the door to a whole world of possibilities not considered until now.

In other words, they identified a brand new type of superconductivity.

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How Complex Wholes Emerge From Simple Parts

 

Throughout nature, throngs of relatively simple elements can self-organize into behaviors that seem unexpectedly complex. Scientists are beginning to understand why and how these phenomena emerge without a central organizing entity.

You could spend a lifetime studying an individual water molecule and never deduce the precise hardness or slipperiness of ice. Watch a lone ant under a microscope for as long as you like, and you still couldn’t predict that thousands of them might collaboratively build bridges with their bodies to span gaps. Scrutinize the birds in a flock or the fish in a school and you wouldn’t find one that’s orchestrating the movements of all the others.

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