Motor task manager protocol.
(A) Experimental setup of the motor task manager. Participants were seated in a quiet room in front of a computer screen displaying a central starting point and 4 peripheral targets, with the investigator observing the test on a separate screen positioned at a right angle to the participant. Hand and arm were concealed of the participant’s view, allowing no visual input regarding position and movement. (B) The directional error at peak velocity is the angle between the vector from the central starting point to the peripheral target and the vector from starting point (S) to the point of peak velocity during movement. (C) Protocol to test visuomotor adaptation and learning. Adaptation (A) and immediate recall (IR) were tested before sleep, post-sleep recall (PSR) the next morning after sleep. WO = washout.Movements were evaluated according to predefined criteria and excluded if necessary (see The direction of rotation was randomly assigned to the participant at 760 m and was subsequently inverted at 3,100 m to minimize the learning effect between first and second testing.The main parameter of interest was the directional error (DE) at peak velocity, describing the angle between the vector from start to target and the vector from start to the point of maximal velocity of the outbound movement (See Additionally, clinical examinations, arterial blood gas analysis, spirometry, respiratory sleep studies and questionnaires assessing AMS (Lake Louise Score [