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1 mar 2021 · Research over the past decade has demonstrated two co-occurring patterns of spaceflight effects on the brain and behavior: dysfunction and adaptive plasticity. Evidence indicates the spaceflight environment induces adverse effects on the brain, including intracranial fluid shifts, gray matter changes, and white matter declines.
Gravity also affects the flow of blood through the brain; at accelerations beyond 5g, this begins to affect the brain’s electrical activity, producing patterns that resemble epileptic seizures.
That is, we hypothesize that microgravity can have adverse effects on brain structure and function, that are accompanied by adaptive neural responses. For example, as noted in Section 4.3.2.2 , we have found some evidence for adaptive structural plasticity post-flight ( Koppelmans et al., 2017a ).
27 cze 2024 · In spaceflight, microgravity directly affects vestibular signalling, as otoliths use the effects of gravity to signal head position relative to the gravitational vector (up-down) on Earth. The altered vestibular signals inflight can result in space motion sickness.
4 lip 2022 · We have reviewed the effects of non-terrestrial gravity on the human brain and behaviour across the sensorimotor, cognitive, and socio-affective domains and have proposed a neurocognitive model based on the effect size of gravity effects on these key functions.
1 mar 2021 · We propose a framework to help organize and understand these microgravity effects on the human brain: Spaceflight Perturbation Adaptation Coupled with Dysfunction (SPACeD). We consider instructive parallels between patterns of brain effects associated with spaceflight and observations in human aging neuroscience.
15 kwi 2014 · Understanding the effects of increased and decreased gravity on central nervous system is essential for developing proper physical and cognitive countermeasures to assure safe and effective space missions and human survival in space.
