Many astronauts have reported problems with their eyesight during missions to the International Space Station and after they return. It now appears that changes to the brain in space could explain this, Seeker.com reports.
A new study in the New England Journal of Medicine has found changes in areas of the brain that are filled with cerebrospinal fluid (CSF).
Out of 18 astronauts who spent at least three months in space, 17 of them had a narrowing of the brain's central sulcus or groove. And among shorter-flight astronauts, 19 percent also experienced this.
"Ever since the advent of human spaceflight, NASA spent a lot of time focusing on what happens to the muscles and bone and heart, but it's only very recently that NASA has been interested in what's happening to the brain," said Donna Roberts, lead investigator and associate professor at the Medical University of South Carolina.
Read the full story: