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During the last years several attempts have been made to describe changes in the mental efficiency of astronauts during space missions by means of performance monitoring studies. These studies are characterized by repeated multivariate assessment of different functions of the human information-processing system. In the present paper, a first review of(More)
During spaceflights, astronauts are exposed to many stressors (e.g., microgravity, confinement) that may impair human information-processing capabilities. In order to analyze the possible effects of the space environment on human time-sharing efficiency, a single-case experiment was conducted in which the time course of dual-task performance (unstable(More)
A series of step-tracking experiments was conducted before, during, and after a 3-week space mission to assess the effects of prolonged microgravity on a non-postural motor-control task. In- and post-flight accuracy was affected only marginally. However, kinematic analyses revealed a considerable change in the underlying movement dynamics: too-small force(More)
A subset of the AGARD-STRES battery including memory search, unstable tracking, and a combination of both tasks (dual-task), was applied repeatedly to the four chamber crew members before, during, and after the 60-day isolation period of EXEMSI. Five ground control group members served as a control group. A subjective state questionnaire was also included.(More)
Living in the space environment and exposure to microgravity induce a number of effects that may interfere with human cognitive and psychomotor performance. However, up to now very few attempts have been made to monitor possible impairments of human performance during space missions. In the present single-case study several cognitive and psychomotor(More)
During their stay in a space habitat, astronauts are exposed to many different stressors that may entail detrimental effects on mood and performance. In order to monitor the effects of the space environment on different human information processing functions during an extraordinary long-term space mission, the cognitive. visuo-motor and time-sharing(More)
In contrast to performance in cognitive tasks, tracking performance tends to deteriorate fairly consistently during spaceflight. We address the question whether this decrement results from specific effects of microgravity on motor control or from non-specific effects of the various other stressors present. In a case study we generalize the findings obtained(More)
A simulated space operations environment was used to investigate the effect of changes in the distance between levels of automation (LOA) on operator telerobotic performance. Participants were assigned to four experimental conditions corresponding to four different LOAs. During the simulation they both switched and did not switch between these LOAs.(More)
Der folgende Fall befasst sich mit der Impressumspflicht für Internetangebote nach dem Telemediengesetz und Rundfunkstaatsvertrag. Gleichzeitig werden damit im Zusammenhang stehende Fragen des Wettbewerbsrechts erörtert. 1. Wo ist die Pflicht zur Anbieterkennzeichnung geregelt? Anbieter von Telemedien müssen ihre Angebote gemäß § 55 Abs. 1, 2 RStV, § 5 TMG(More)
The increase of theta activity (4-7 Hz) in the electroencephalogram (EEG) during deep diving is commonly attributed to pathophysiologic mechanisms underlying the high pressure neurologic syndrome. The aim of this study was to clarify whether more precise cognitive aspects of the condition may be described in which theta activity occurs during a deep dive.(More)