Results 21 to 30 of about 2,769 (184)
Biomedicines, 2022 Calcium (Ca2+) elevation is an essential secondary messenger in many cellular processes, including disease progression and adaptation to external stimuli, e.g., gravitational load.
Andreas Hammer +17 more
doaj +1 more source
Back to the future—revisiting Skylab data on ocular counter-rolling and motion sickness
Frontiers in Physiology, 2023 In the early 1970s, nine astronauts participated in missions to the Skylab space station. During two preflight testing sessions at the Naval Aerospace Medical Research Laboratory in Pensacola, the amplitudes of their ocular counter-rolling (OCR) during ...
Gilles Clément +4 more
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Effects of Simulated Microgravity and Hypergravity Conditions on Arm Movements in Normogravity
Frontiers in Neural Circuits, 2021 The human sensorimotor control has evolved in the Earth’s environment where all movement is influenced by the gravitational force. Changes in this environmental force can severely impact the performance of arm movements which can be detrimental in ...
Marko Jamšek +9 more
doaj +1 more source
Muscle in Variable Gravity: “I Do Not Know Where I Am, But I Know What to Do”
Frontiers in Physiology, 2021 Purpose: Fascicle and sarcomere lengths are important predictors of muscle mechanical performance. However, their regulation during stretch-shortening cycle (SSC) activities in usual and challenging conditions is poorly understood.
Elena Monti +12 more
doaj +1 more source
Impact of different ground-based microgravity models on human sensorimotor system
Frontiers in Physiology, 2023 This review includes current and updated information about various ground-based microgravity models and their impact on the human sensorimotor system.
Alina Saveko +11 more
doaj +1 more source
Parabolic flight as a spaceflight analog [PDF]
Journal of Applied Physiology, 2016 Ground-based analog facilities have had wide use in mimicking some of the features of spaceflight in a more-controlled and less-expensive manner. One such analog is parabolic flight, in which an aircraft flies repeated parabolic trajectories that provide short-duration periods of free fall (0 g) alternating with high- g pullout or recovery phases ...
openaire +2 more sources
Effects of Local Gravity Compensation on Motor Control During Altered Environmental Gravity
Frontiers in Neural Circuits, 2021 Our sensorimotor control is well adapted to normogravity environment encountered on Earth and any change in gravity significantly disturbs our movement.
Tjasa Kunavar +10 more
doaj +1 more source
Fluidic shaping and in-situ measurement of liquid lenses in microgravity
npj Microgravity, 2023 In the absence of gravity, surface tension dominates over the behavior of liquids. While this often poses a challenge in adapting Earth-based technologies to space, it can also provide an opportunity for novel technologies that utilize its advantages. In
Omer Luria +11 more
doaj +1 more source
Predicting motion sickness during parabolic flight [PDF]
Autonomic Neuroscience, 2002 There are large individual differences in susceptibility to motion sickness. Attempts to predict who will become motion sick have had limited success. In the present study, we examined gender differences in resting levels of salivary amylase and total protein, cardiac interbeat intervals (R-R intervals), and a sympathovagal index and evaluated their ...
Deborah L, Harm, Todd T, Schlegel
openaire +2 more sources
Heavy‐Atom Tunneling at Room Temperature Revealed by Instanton Theory
Angewandte Chemie, EarlyView.Usually, tunneling does not play a significant role in chemical reactions except at low temperature, especially when heavy atoms are involved. However, using nonadiabatic instanton theory we find that heavy‐atom tunneling dominates the reaction mechanism for spin‐forbidden processes in the synthesis of strained organic molecules even at room ...
Debaarjun Mukherjee +2 more
wiley +2 more sources