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last yr.

Study Finds Cognitive Changes in Astronauts During Space Missions Are Temporary

Research on astronauts aboard the ISS shows slowed mental processing during missions, but no long-term cognitive impairment.

In this photo provided by NASA, from left, astronauts Butch Wilmore, Suni Williams, Nick Hague and Don Pettit show their U.S. flag-themed socks aboard the International Space Station on Election Day, Tuesday, Nov. 5, 2024.
Astronaut Scott Kelly on a Spacewalk. (Copyright: NASA)
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Overview

  • A NASA study involving 25 astronauts revealed temporary cognitive changes, such as slower processing speed and reduced attention, during six-month stays on the International Space Station (ISS).
  • These changes were primarily observed early in the mission and gradually returned to baseline after astronauts returned to Earth, though some recovery took longer.
  • Key cognitive areas affected included processing speed, working memory, and attention, similar to stress-related changes seen on Earth.
  • The study found no evidence of permanent cognitive impairment or neurodegenerative decline, highlighting the resilience of the human brain in extreme environments.
  • The findings are expected to inform future missions to the Moon, Mars, and beyond, helping to anticipate and mitigate potential cognitive challenges in prolonged space exploration.