Produced by: Manoj Kumar
Astronauts returning from space experienced slower cognitive performance, including reduced processing speed, visual working memory, and attention. These effects were most pronounced during their time aboard the ISS but gradually resolved on Earth.
Dr. Sheena Dev from NASA’s Behavioral Health and Performance Laboratory highlighted that stress in space could cause cognitive changes, similar to how stress impacts memory and attention on Earth.
The groundbreaking study, published in Frontiers in Physiology, analyzed 25 astronauts using speed and accuracy tests conducted before, during, and after their missions, revealing how space uniquely affects brain function.
Credit : NASA
Despite slower cognitive responses during space missions, astronauts’ cognitive skills normalized upon returning to Earth, showing no evidence of brain damage or long-term neurodegeneration.
Credit : NASA
Astronauts face extensive physiological challenges in space, including fluid redistribution, bone density loss, and muscle atrophy. Even with 2.5 hours of daily exercise, recovery from these effects takes years.
Credit : NASA
The study revealed astronauts showed reduced risk-taking behaviors during late and post-flight phases, suggesting that prolonged missions influence decision-making and emotional regulation.
Credit : NASA
The absence of gravity, high radiation exposure, and disrupted sleep cycles are suspected culprits behind these cognitive changes, though definitive reasons remain unclear, researchers said.
Credit : NASA
Interestingly, researchers found no significant differences in the impact of space stress across zodiac signs, humorously dismissing any celestial influence on astronaut performance.
Credit : NASA
Life aboard the International Space Station, a marvel orbiting Earth at 250 miles, provides vital insights into how prolonged space exposure alters both body and mind, advancing research for long-term missions.
NASA aims to use these findings to prepare astronauts for even longer missions, including Mars expeditions, emphasizing the importance of mitigating stress and maintaining mental sharpness in space.
Credit : NASA