Click here to sign in with

or

Forget Password?

Learn more

September 7, 2020

report

by Bob Yirka , Phys.org

An international team of researchers has found that long space flights can lead to some minor brain reorganization but no neurodegeneration. In their paper published in the journal Science Advances, the group describes their study of the brains of cosmonauts returning from long-term missions aboard the International Space Station, and what they found.

googletag.cmd.push(function() { googletag.display(‘div-gpt-ad-1449240174198-2’); });

Prior research has shown that long-term space missions can lead to bone and muscle degeneration due to the impact of extended freefall on the body. Some studies have also shown that it can lead to minor loss of visual acuity due to fluid buildup in the eyes. In this new effort, the researchers wanted to know what effects such missions might have on the brains of those who remain in space for long periods of time.

To find out, the researchers conducted a special type of MRI scan on 11 male Russian cosmonauts who had together averaged six months in space aboard the ISS—before and after they returned from their missions—and then again seven months later.

The researchers scanned the cosmonauts’ brains with diffusion MRI, a process that involves taking multiple scans at once. In this case, they took 153 scans during a single session. Each of the scans has slightly different parameters, which allows for creating images in multiple ways. As an example, one of the scans had a parameter called the b value, where a certain signal is lowered during scanning to record decay of the material being scanned—in this case, brain matter.

The researchers found that the brain reorients itself during long space missions, essentially floating into different parts of the skull. This resulted in slight reorganization of the brain itself in response to the reorientation. The cosmonauts brains also responded in other ways to the unusual living environment—they acquired new motor skills and had better balance and coordination. The researchers also found that the reorientation did not result in neurodegeneration and that normal orientation was nearly restored seven months after the cosmonauts returned to Earth. They also confirmed fluid build-up behind the eyes as the reason for the loss of visual acuity during long space flights.

© 2020 Science X Network

Thank you for taking your time to send in your valued opinion to Science X editors.

You can be assured our editors closely monitor every feedback sent and will take appropriate actions. Your opinions are important to us.

We do not guarantee individual replies due to extremely high volume of correspondence.

Your email address is used only to let the recipient know who sent the email. Neither your address nor the recipient’s address will be used for any other purpose.
The information you enter will appear in your e-mail message and is not retained by Phys.org in any form.

Get weekly and/or daily updates delivered to your inbox.
You can unsubscribe at any time and we’ll never share your details to third parties.

This site uses cookies to assist with navigation, analyse your use of our services, and provide content from third parties.
By using our site, you acknowledge that you have read and understand our Privacy Policy
and Terms of Use.

Source: https://phys.org/news/2020-09-mri-scans-brain-space-flights.html

Space, Human brain, Motor skill, Magnetic resonance imaging, Astronaut, Neurodegeneration, Research

World news – CA – MRI scans show brain reorganization during long space flights, but no neurodegeneration

En s’appuyant sur ses expertises dans les domaines du digital, des technologies et des process , CSS Engineering vous accompagne dans vos chantiers de transformation les plus ambitieux et vous aide à faire émerger de nouvelles idées, de nouvelles offres, de nouveaux modes de collaboration, de nouvelles manières de produire et de vendre.

CSS Engineering s’implique dans les projets de chaque client comme si c’était les siens. Nous croyons qu’une société de conseil devrait être plus que d’un conseiller. Nous nous mettons à la place de nos clients, pour aligner nos incitations à leurs objectifs, et collaborer pour débloquer le plein potentiel de leur entreprise. Cela établit des relations profondes et agréables.

Nos services:

  1. Création des sites web professionnels
  2. Hébergement web haute performance et illimité
  3. Vente et installation des caméras de vidéo surveillance
  4. Vente et installation des système de sécurité et d’alarme
  5. E-Marketing

Toutes nos réalisations ici https://www.css-engineering.com/en/works/

LEAVE A REPLY

Please enter your comment!
Please enter your name here