ArticleNeuroscience1999
Sleep in the platypus.
Article in Neuroscience, 1999. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers.
What it found
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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.
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Who cites it
43 citing papers in PubMed, 122 citations in OpenAlex.
- REM-sleep twitching in adults and the maintenance of specialized sensorimotor systems.Current biology : CB · 2026Review
- Variation and convergence in the morpho-functional properties of the mammalian neocortex.Frontiers in systems neuroscience · 2024Review
- The unified theory of sleep: Eukaryotes endosymbiotic relationship with mitochondria and REM the push-back response for awakening.Neurobiology of sleep and circadian rhythms · 2023Article
- REM sleep function: Mythology vs. reality.Revue neurologique · 2023Review
- Sleep function: an evolutionary perspective.The Lancet. Neurology · 2022Review
- Article
- Sleep in ostrich chicks (Struthio camelus).Sleep · 2021Article
- Memory Consolidation Is Similar in Waking and Sleep.Current sleep medicine reports · 2021Article
- Mapping Network Activity in Sleep.Frontiers in neuroscience · 2021Review
- Do all mammals dream?The Journal of comparative neurology · 2020Review
- Budgerigars have complex sleep structure similar to that of mammals.PLoS biology · 2020Article
- What Is REM Sleep?Current biology : CB · 2020Review
- Local Aspects of Avian Non-REM and REM Sleep.Frontiers in neuroscience · 2019Review
- Partial homologies between sleep states in lizards, mammals, and birds suggest a complex evolution of sleep states in amniotes.PLoS biology · 2018Article
- Sleep research goes wild: new methods and approaches to investigate the ecology, evolution and functions of sleep.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2017Review
- Article
- Neuroscience: A Distributed Neural Network Controls REM Sleep.Current biology : CB · 2016Article
- The Case of the Disappearing Spindle Burst.Neural plasticity · 2016Review
- Unraveling the complexities of circadian and sleep interactions with memory formation through invertebrate research.Frontiers in systems neuroscience · 2014Review
- Sleep alterations in mammals: did aquatic conditions inhibit rapid eye movement sleep?Neuroscience bulletin · 2012Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors at 2 institutions in 2 countries.
Funding
Abstract
We have conducted the first study of sleep in the platypus Ornithorhynchus anatinus. Periods of quiet sleep, characterized by raised arousal thresholds, elevated electroencephalogram amplitude and motor and autonomic quiescence, occupied 6-8 h/day. The platypus also had rapid eye movement sleep as defined by atonia with rapid eye movements, twitching and the electrocardiogram pattern of rapid eye movement. However, this state occurred while the electroencephalogram was moderate or high in voltage, as in non-rapid eye movement sleep in adult and marsupial mammals. This suggests that the low-voltage electroencephalogram is a more recently evolved feature of mammalian rapid eye movement sleep. Rapid eye movement sleep occupied 5.8-8 h/day in the platypus, more than in any other animal. Our findings indicate that rapid eye movement sleep may have been present in large amounts in the first mammals and suggest that it may have evolved in pre-mammalian reptiles.
Indexed as
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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.