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Cetacean sleep: An unusual form of mammalian sleep
Our knowledge of the form of lateralized sleep behavior, known as unihemispheric slow wave sleep (USWS), seen in all members of the order Cetacea examined to date, is described. We trace theExpand
Relationship between sleep and eye state in Cetaceans and Pinnipeds.
We recorded EEG from both hemispheres and documented the state of the two eyes in two species of Cetaceans (one beluga and one bottlenose dolphin) and one species of Pinnipeds (two northern furExpand
Animal behaviour: Continuous activity in cetaceans after birth
All mammals previously studied take maximal rest or sleep after birth, with the amount gradually decreasing as they grow to adulthood, and adult fruitflies and rats die if they are forcibly deprivedExpand
Sleep and wakefulness in the southern sea lion
We recorded an electroencephalogram from the two hemispheres, a neck musculature electromyogram, an electrooculogram, and respiratory acts during sleep and wakefulness on land in three 1-year-old seaExpand
Sleep in the harp seal (Pagophilus groenlandica). Peculiarities of sleep in pups during the first month of their lives
SUMMARY  Two white‐coated (ten day‐old) and two grey‐spotted (one month‐old) pups of the harp seal were implanted with electrodes for recording the electrocorticograms of the two hemispheres,Expand
Unihemispheric slow wave sleep and the state of the eyes in a white whale
We recorded electroencephalogram (EEG) and simultaneously documented the state of both eyelids during sleep and wakefulness in a sub-adult male white whale over a 4-day-period. We showed that theExpand
Sleep in an Amazonian manatee,Trichechus inunguis
For the first time, sleep was studied in a representative of the order of Sirenia. Slow wave sleep occupied 27%, and paradoxical sleep 1% of the total recording time in the AmazonianExpand
Unilateral EEG activation during sleep in the Cape fur seal, Arctocehalus pusillus
Sleep and wakefulness on the land were studied electrophysiologically in one adult female Cape fur seal (Arctocephalus pusillus). In two 24-h sessions, slow-wave sleep and paradoxical sleep averagedExpand
Electroencephalogram asymmetry and spectral power during sleep in the northern fur seal
The fur seal (Callorhinus ursinus), a member of the Pinniped family, displays a highly expressed electroencephalogram (EEG) asymmetry during slow wave sleep (SWS), which is comparable with theExpand
Inactivity/sleep in two wild free-roaming African elephant matriarchs – Does large body size make elephants the shortest mammalian sleepers?
The current study provides details of sleep (or inactivity) in two wild, free-roaming African elephant matriarchs studied in their natural habitat with remote monitoring using an actiwatchExpand