The research also states that all indicators return to normal after seven months on Earth.
Research published in the academic journal Science Advances has confirmed that a long stay in space affects the brain structure of astronauts.
Scientists from Belgium, Germany, Russia and Australia studied the brain structure of 11 Russian astronauts, who spent an average of 171 days in a row on the International Space Station. Each of the 11 astronauts underwent magnetic resonance imaging of the brain three times, once before taking off into space and twice after returning to Earth.
The neurovisualization method made it possible to identify structural and functional changes in the brain after space flight.
The distribution of gray and white mass of the brain changes, while the ventricles of the brain increase as does the cerebrospinal fluid, and the cause of this is a long stay in a weightless state.
Experts believe that in this way the nervous system adapts to weightlessness and increases the pressure on the area of the brain, which is responsible, among other things, for movement. The research also states that all indicators return to normal after seven months on Earth.