Animal sleep: A review of sleep duration across phylogeny

Campbell, Scott S.; Tobler, Irene

doi:10.1016/0149-7634(84)90054-x

Cited by 688 publications

(508 citation statements)

References 106 publications

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“…In contrast to the mouse, it is generally understood that invertebrates lack the neural architecture to generate characteristic sleep EEG patterns (Campbell and Tobler, 1984). However, essential behavioral characteristics of sleep have been established for mammals, and one can determine whether an organism shares these defining features.…”

Section: Defining the Phenotypementioning

confidence: 99%

“…However, essential behavioral characteristics of sleep have been established for mammals, and one can determine whether an organism shares these defining features. These characteristics were codified by Henri Pieron at the turn of the last century, and were instrumental in validating the polysomnograph (Campbell and Tobler, 1984). They include: (1) behavioral quiescence, (2) specific sleeping site, (3) stereotypical sleeping posture, (4) increased arousal thresholds, and (5) rapid reversibility.…”

Section: Defining the Phenotypementioning

confidence: 99%

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Perchance to dream: Solving the mystery of sleep through genetic analysis

Shaw

Franken

2002

J. Neurobiol.

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Sleep has been identified in all mammals and nonmammalian vertebrates that have been critically evaluated. In addition, sleep-like states have also been identified and described in several invertebrates. Despite this prevalence throughout the animal kingdom, the function of sleep remains a mystery. The completion of several genome sequencing projects has led to the expectation that fundamental aspects of sleep can be elucidated through genetic dissection. Indeed, studies in both the mouse and fly have begun to reveal tantalizing suggestions about the underlying principles that regulate sleep homeostasis. In this article we will review recent studies that have used genetic techniques to evaluate sleep in the fruit fly and the mouse.

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Section: Defining the Phenotypementioning

confidence: 99%

Section: Defining the Phenotypementioning

confidence: 99%

Perchance to dream: Solving the mystery of sleep through genetic analysis

Shaw

Franken

2002

J. Neurobiol.

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“…Absence of movement is therefore routinely used as a proxy to measure sleep across a wide range of animals, spanning from jellyfish to elephants (16,24,25). In Drosophila too, sleep can be estimated by measuring the absence of walking bouts, generally using a commercially available device to detect whenever an isolated fly crosses the midline of a tube (26).…”

Section: Virtually Sleepless Flies Are Found In a Non-mutant Populationmentioning

confidence: 99%

Most sleep does not serve a vital function. Evidence from Drosophila melanogaster

Geissmann

Beckwith

Gilestro

2018

Preprint

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Sleep appears to be a universally conserved phenomenon among the animal kingdom but whether this striking evolutionary conservation underlies a basic vital function is still an open question.Using novel technologies, we conducted an unprecedentedly detailed high-throughput analysis of sleep in the fruit fly Drosophila melanogaster, coupled with a life-long chronic and specific sleep restriction. Our results show that some wild-type flies are virtually sleepless in baseline conditions and that complete, forced sleep restriction is not necessarily a lethal treatment in wild-type Drosophila melanogaster. We also show that circadian drive, and not homeostatic regulation, is the main contributor to sleep pressure in flies. We propose a three-partite model framework of sleep function, according to which, total sleep accounts for three components: a vital component, a useful component, and an accessory component.

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“…Phylogenetically, sleep variations have not been linked to memory function such as consolidation enhancement. Total sleep times range from 20 hours in the brown bat and 18 hours in the giant armadillo to 3 hours in the horse and 2 hours in the giraffe (Campbell & Tobler 1984), with humans midway at 8 hours in young adults and 14 hours at 6 months. However, the lack of any correlation with memory may simply reflect the evolution of distinct species-specific consolidation mechanisms.…”

Section: New Perspectives On Sleep Disturbances and Memory In Human Pmentioning

confidence: 99%

Where is the classic interference theory for sleep and memory?

Coenen

2005

Behav Brain Sci

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Walker's target article proposes a refinement of the well known two-stage model of memory formation to explain the positive effects of sleep on consolidation. After a first stage in which a labile memory representation is formed, a further stabilisation of the memory trace takes place in the second stage, which is dependent on (REM) sleep. Walker has refined the latter stage into a stage in which a consolidation-based enhancement occurs. It is not completely clear what consolidation-based enhancement implies and how it can be dissociated from a stage for memory-stabilisation. A more serious consideration, however, is whether a second stage in memory consolidation that is solely dependent on sleep, is really necessary. The classical, passive, interference theory is able to explain adequately the findings related to the effects of sleep and memory, and can lead perhaps better to an understanding of the highly variable data in this field.

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Animal sleep: A review of sleep duration across phylogeny

Cited by 688 publications

References 106 publications

Perchance to dream: Solving the mystery of sleep through genetic analysis

Perchance to dream: Solving the mystery of sleep through genetic analysis

Most sleep does not serve a vital function. Evidence from Drosophila melanogaster

Where is the classic interference theory for sleep and memory?

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