Astronauts returning from six-month missions describe a persistent 'observer' sensation — the feeling of watching their own lives from a half-step outside the frame, weeks after they're back on the ground
spacedaily.com
Astronauts returning from long ISS rotations consistently describe a half-step-outside-themselves sensation that flight surgeons recognize as part of the post-mission readjustment curve — a perceptual cost of spending six months in a body that had to learn a different world.