ArticleNPJ microgravity2021
Altered sleep spindles and slow waves during space shuttle missions.
Article in NPJ microgravity, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
10 citing papers in PubMed, 20 citations in OpenAlex.
- Changes to human sleep architecture during long-duration spaceflight.Journal of sleep research · 2025Article
- Is sleep affected after microgravity and hypergravity exposure? A pilot study.Journal of sleep research · 2025Article
- Simulating microgravity with 60 days of 6 degree head-down tilt bed rest compromises sleep.NPJ microgravity · 2024Article
- The Posterior Dominant Rhythm Remains Within Normal Limits in the Microgravity Environment.Brain sciences · 2024Article
- [Effects of Extreme Environments on Human Sleep].Sichuan da xue xue bao. Yi xue ban = Journal of Sichuan University. Medical science edition · 2024Review
- Effect of 60 days of head down tilt bed rest on amplitude and phase of rhythms in physiology and sleep in men.NPJ microgravity · 2024Article
- A perspective on the evidence for glymphatic obstruction in spaceflight associated neuro-ocular syndrome and fatigue.NPJ microgravity · 2024Review
- Review
- How Sleep Research in Extreme Environments Can Inform the Military: Advocating for a Transactional Model of Sleep Adaptation.Current psychiatry reports · 2023Review
- Sleep, time, and space-fatigue and performance deficits in pilots, commercial truck drivers, and astronauts.Sleep advances : a journal of the Sleep Research Society · 2022Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors at 4 institutions in 3 countries.
Funding
Abstract
Sleep deficiencies and associated performance decrements are common among astronauts during spaceflight missions. Previously, sleep in space was analyzed with a focus on global measures while the intricate structure of sleep oscillations remains largely unexplored. This study extends previous findings by analyzing how spaceflight affects characteristics of sleep spindles and slow waves, two sleep oscillations associated with sleep quality and quantity, in four astronauts before, during and after two Space Shuttle missions. Analysis of these oscillations revealed significantly increased fast spindle density, elevated slow spindle frequency, and decreased slow wave amplitude in space compared to on Earth. These results reflect sleep characteristics during spaceflight on a finer electrophysiological scale and provide an opportunity for further research on sleep in space.
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.