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Narrowing of the central sulcus occurred in 17 of 18 astronauts after long-duration flights (mean flight time, 164.8 days) and in 3 of 16 astronauts after short-duration flights (mean flight time ...
Results showed a narrowing of the central sulcus in 17 of 18 (94%) astronauts after long-duration flights and in 3 of 16 (19%) astronauts after short-duration flights (P < .001).