Sixteen astronauts grew slightly more accurate at a navigation task after 6 months aboard the ISS, even as scans showed less activity in brain regions tied to spatial orientation and pointed to a new way the brain adapts to weightlessness
Sixteen astronauts spent about 6 months aboard the International Space Station, came back to Earth and then showed a surprising mix of changes during a navigation test. Their performance edged upward on the task, yet their brains used less activity in several regions that usually help people keep track of position and direction. The result…








