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dc.contributor.author
Lesku, John A.
dc.contributor.author
Meyer, Leith C.R.
dc.contributor.author
Fuller, Andrea
dc.contributor.author
Maloney, Shane K.
dc.contributor.author
Dell'Omo, Giacomo
dc.contributor.author
Vyssotski, Alexei L.
dc.contributor.author
Rattenborg, Niels C.
dc.date.accessioned
2018-08-23T09:03:25Z
dc.date.available
2017-06-14T20:28:09Z
dc.date.available
2018-08-23T09:03:25Z
dc.date.issued
2011-08-24
dc.identifier.issn
1932-6203
dc.identifier.other
10.1371/journal.pone.0023203
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/161025
dc.identifier.doi
10.3929/ethz-b-000161025
dc.description.abstract
Mammals and birds engage in two distinct states of sleep, slow wave sleep (SWS) and rapid eye movement (REM) sleep. SWS is characterized by slow, high amplitude brain waves, while REM sleep is characterized by fast, low amplitude waves, known as activation, occurring with rapid eye movements and reduced muscle tone. However, monotremes (platypuses and echidnas), the most basal (or ‘ancient’) group of living mammals, show only a single sleep state that combines elements of SWS and REM sleep, suggesting that these states became temporally segregated in the common ancestor to marsupial and eutherian mammals. Whether sleep in basal birds resembles that of monotremes or other mammals and birds is unknown. Here, we provide the first description of brain activity during sleep in ostriches (Struthio camelus), a member of the most basal group of living birds. We found that the brain activity of sleeping ostriches is unique. Episodes of REM sleep were delineated by rapid eye movements, reduced muscle tone, and head movements, similar to those observed in other birds and mammals engaged in REM sleep; however, during REM sleep in ostriches, forebrain activity would flip between REM sleep-like activation and SWS-like slow waves, the latter reminiscent of sleep in the platypus. Moreover, the amount of REM sleep in ostriches is greater than in any other bird, just as in platypuses, which have more REM sleep than other mammals. These findings reveal a recurring sequence of steps in the evolution of sleep in which SWS and REM sleep arose from a single heterogeneous state that became temporally segregated into two distinct states. This common trajectory suggests that forebrain activation during REM sleep is an evolutionarily new feature, presumably involved in performing new sleep functions not found in more basal animals.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Public Library of Science
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/3.0/
dc.title
Ostriches Sleep like Platypuses
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 3.0 Unported
ethz.journal.title
PLoS ONE
ethz.journal.volume
6
en_US
ethz.journal.issue
8
en_US
ethz.journal.abbreviated
PLoS ONE
ethz.pages.start
e23203
en_US
ethz.size
7 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.nebis
006206116
ethz.publication.place
Lawrence, KS, USA
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02140 - Dep. Inf.technologie und Elektrotechnik / Dep. of Inform.Technol. Electrical Eng.::02533 - Institut für Neuroinformatik / Institute of Neuroinformatics::03774 - Hahnloser, Richard H.R. / Hahnloser, Richard H.R.
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02140 - Dep. Inf.technologie und Elektrotechnik / Dep. of Inform.Technol. Electrical Eng.::02533 - Institut für Neuroinformatik / Institute of Neuroinformatics::03774 - Hahnloser, Richard H.R. / Hahnloser, Richard H.R.
ethz.date.deposited
2017-06-14T20:30:37Z
ethz.source
ECIT
ethz.identifier.importid
imp59364e85b8f8574549
ethz.ecitpid
pub:66477
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2017-07-15T07:55:33Z
ethz.rosetta.lastUpdated
2018-11-07T23:39:33Z
ethz.rosetta.versionExported
true
ethz.COinS
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