Brain scans of ISS astronauts show the organ quietly re-weighting its own senses during six months in orbit — turning down the silent inner ear and leaning almost entirely on the eyes to build a world

Six months on the International Space Station quietly rewires how astronauts sense the world — turning down inner-ear signals gravity has rendered useless, and handing orientation almost entirely to the eyes. Then they come home. Mike Fincke experienced a brief episode during his time on the International Space Station in which he had difficulty speaking. The incident, reported by CNN in May, sharpened a question that neuroscientists have been circling for a decade: what exac... [7946 chars]