ArticleCommunications biology2022
Temperature-robust rapid eye movement and slow wave sleep in the lizard Laudakia vulgaris.
Article in Communications biology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed, 16 citations in OpenAlex.
- Wavelength-dependent sleep state manipulation using light pulses in Pogona vitticeps.Communications biology · 2026Article
- Neural temporal scaling accounts for robust hunting behavior across temperatures.Nature communications · 2026Article
- Sleep-dependent infraslow rhythms are evolutionarily conserved across reptiles and mammals.Nature neuroscience · 2026Article
- Sharp Waves, Bursts, and Coherence: Activity in a Songbird Vocal Circuit Is Influenced by Behavioral State.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025Article
- Local sleep in songbirds: different simultaneous sleep states across the avian pallium.Journal of sleep research · 2025Article
- Sleep homeostasis in lizards and the role of the cortex.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- ReptiLearn: An automated home cage system for behavioral experiments in reptiles without human intervention.PLoS biology · 2024Article
- Circadian control of sleep-related neuronal activity in lizards.PNAS nexus · 2024Article
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
During sleep our brain switches between two starkly different brain states - slow wave sleep (SWS) and rapid eye movement (REM) sleep. While this two-state sleep pattern is abundant across birds and mammals, its existence in other vertebrates is not universally accepted, its evolutionary emergence is unclear and it is undetermined whether it is a fundamental property of vertebrate brains or an adaptation specific to homeotherms. To address these questions, we conducted electrophysiological recordings in the Agamid lizard, Laudakia vulgaris during sleep. We found clear signatures of two-state sleep that resemble the mammalian and avian sleep patterns. These states switched periodically throughout the night with a cycle of ~90 seconds and were remarkably similar to the states previously reported in Pogona vitticeps. Interestingly, in contrast to the high temperature sensitivity of mammalian states, state switches were robust to large variations in temperature. We also found that breathing rate, micro-movements and eye movements were locked to the REM state as they are in mammals. Collectively, these findings suggest that two-state sleep is abundant across the agamid family, shares physiological similarity to mammalian sleep, and can be maintain in poikilothems, increasing the probability that it existed in the cold-blooded ancestor of amniotes.
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