Popov K E, Roll R, Lipshits M I, Roll Zh P, Zhil'od Zh K, Gurfinkel' V S
Aviakosm Ekolog Med. 1999;33(2):3-5.
Three crew members of the Russian-French MIR mission were tested to determine errors in pointing to memorized visual targets. In the laboratory, all test-subjects consistently used to point to the spot below the actual target presentation. The mean Y-error (the vertical error) made up -31.6 +/- 21.8 mm. In microgravity, the Y-error moved "upward" so that the mean Y-error was -16.8 +/- 37.0 mm. The data demonstrate adaptation of the central program of aiming arm movement to the microgravity conditions.
