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Changes of brain response induced by simulated weightlessness
Acta Astronautica, 1992The characteristics change of brain response was studied during 15 degrees head-down tilt (HDT) comparing with 45 degrees head-up tilt (HUT). The brain responses evaluated included the EEG power spectra change at rest and during mental arithmetic, and the event-related potentials (ERPs) of somatosensory, selective attention and mental arithmetic ...
J, Wei, G, Yan, Z, Guan
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Skeletal abnormalities in rats induced by simulated weightlessness
Metabolic Bone Disease and Related Research, 1982A hypokinetic model has been developed which attempts to simulate the weightlessness experienced during space flight. Male rats (approximately 130 g) were suspended from the model with a head-down tilt for a two-week period. Total mechanical unloading of the hind limbs and partial unloading of the fore limbs occurred.
T J, Wronski, E R, Morey
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Contributory factors to orthostatic intolerance after simulated weightlessness
Clinical Physiology, 1999Various factors may contribute to orthostatic intolerance (OI) observed after space flights or simulated weightlessness such as bed rest experiments: individual physical and physiological factors (arterial blood pressure (BP), height), physiological changes induced by real or simulated weightlessness (hypovolaemia, increase in venous distensibility ...
A, Pavy-Le Traon +4 more
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International Conferences on Biomedical and Bioinformatics Engineering, 2020
During spaceflight, microgravity can cause negative impact on emotion and cognitive function. However, few effectively preventive methods have been developed yet.
Ling Wang +4 more
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During spaceflight, microgravity can cause negative impact on emotion and cognitive function. However, few effectively preventive methods have been developed yet.
Ling Wang +4 more
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[Weightlessness or weightlessness simulation and vascular remodeling].
Hang tian yi xue yu yi xue gong cheng = Space medicine & medical engineering, 2003Weightlessness is inavoidable during spaceflight. It brings profound physiological effects on human body. Vascular remodeling is one of the important changes of cardiovascular system caused by weightlessness or simulated weightlessness. The paper summarized the studies on the effects of weightlessness or weightlessness simulation on vascular remodeling
Yong, Yue +3 more
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Effects of Simulated Weightlessness on Bone Mineral Metabolism
Endocrinology, 1984Space flight and bedrest result in a negative calcium balance and osteopenia. The mechanisms underlying these events are not well understood. In particular, it is not clear whether systemic or local factors are preeminent in mediating the effects of gravity on bone mineral content.
R K, Globus, D D, Bikle, E, Morey-Holton
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Human Autonomic Responses to Actual and Simulated Weightlessness
The Journal of Clinical Pharmacology, 1991Orthostatic dysfunction occurs after exposure to microgravity, and is not completely understood. The authors developed a device for stimulating carotid baroreceptors to test the hypothesis that exposure to microgravity leads to impairment of arterial baroreflex mechanisms.
D L, Eckberg, J M, Fritsch
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[Mechanism of cardiac atrophy under weightlessness/simulated weightlessness].
Sheng li xue bao : [Acta physiologica Sinica], 2017Cardiac remodeling is the heart's response to external or internal stimuli. Weightlessness/simulated weightlessness leads to cardiac atrophy and heart function declining. Understanding the mechanism of cardiac atrophy under weightlessness is important to help astronaut recover from unloading-induced cardiovascular changes after spaceflight.
Guo-Hui, Zhong +2 more
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[Thermoregulation under simulated weightlessness].
Hang tian yi xue yu yi xue gong cheng = Space medicine & medical engineering, 1998The effect of simulated weightlessness on thermoregulation was studied in 5 subjects. The experiment consisted of 3d baseline measurements, 7d head-down bed rest and 2d recovery. Circadian rhythm was assessed by continuous measurements of rectal temperature and skin temperature with 2h intervals.
M, Qiu +5 more
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1986
The phenomenon of gravitation is characterized by the mutual attraction of any two bodies. The universal character of gravitation was first recognized by Isaac Newton who found the well-known law for the attraction force F acting between two mass points or homogeneous spherical bodies $$\rm F\, = \,\gamma Mm/R^2 $$ (3.1) M, m are the masses ...
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The phenomenon of gravitation is characterized by the mutual attraction of any two bodies. The universal character of gravitation was first recognized by Isaac Newton who found the well-known law for the attraction force F acting between two mass points or homogeneous spherical bodies $$\rm F\, = \,\gamma Mm/R^2 $$ (3.1) M, m are the masses ...
openaire +1 more source