Slow waves during sleep in crayfish: A time–frequency analysis

Mendoza-Ángeles, Karina; Cabrera, A.; Hernández‐Falcón, Jesús; Ramón, Fidel

doi:10.1016/j.jneumeth.2007.01.025

Cited by 21 publications

(10 citation statements)

References 26 publications

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“…Electrophysiological recordings from above the vertical lobe in the brain of the octopus have revealed trains of high-amplitude spikes associated with behavioral quiescence, suggesting a correspondence to the spikes observed during reptilian behavioral quiescence (Flanigan, 1973(Flanigan, , 1974. A recent study in the crayfish (Procambarus clarkii) also documented clear signs of behavioral sleep as well as a rebound in recovery sleep following enforced wakefulness (Ramon et al, 2004;Mendoza-Angeles et al, 2007). However, in contrast to findings in the octopus, continuous fast spikes occurred during behavioral wakefulness.…”

Section: Invertebratesmentioning

confidence: 89%

The phylogeny of sleep

Hartse¹

2011

Handbook of Clinical Neurology

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Section: Invertebratesmentioning

confidence: 89%

The phylogeny of sleep

Hartse¹

2011

Handbook of Clinical Neurology

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“…We have previously shown that unrestrained, chronically implanted crayfish with electrodes on the brain sleep (Ramón et al, 2004;Mendoza-Angeles et al, 2005;Mendoza-Angeles et al, 2007). However, the constraints of placing the electrodes in appropriate areas of the brain are limiting, as surgery has to be made rapidly, vision of the brain is partial because the hole for the electrode has to be small, and once the electrodes are implanted their position on the brain cannot be changed.…”

Section: Unrestrained and Tethered Crayfishmentioning

confidence: 99%

“…The multiple methods used by Hendricks et al (Hendricks et al, 2000) and by Shaw et al (Shaw et al, 2000) have provided more evidence on the existence of this function in invertebrates. Notwithstanding brain recordings from tethered mutant flies performed by Nitz et al (Nitz et al, 2002), reversible changes in the brain electrical activity from unrestrained or tethered invertebrates have been demonstrated only in crayfish (Ramon et al, 2004;Mendoza-Angeles et al, 2007).…”

Section: Recording From Different Brain Areasmentioning

confidence: 99%

Slow waves during sleep in crayfish. Origin and spread

Mendoza-Ángeles

Hernández‐Falcón

Ramón

2010

Journal of Experimental Biology

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SUMMARYPrevious results show that when unrestrained crayfish sleep, the electrical activity of the brain changes from multiple spikes (frequencies above 300Hz) on a flat baseline to continuous slow waves at a frequency of 15-20Hz. To study the temporal organization of such activity, we developed a tethered crayfish preparation that allows us to place electrodes on visually identified regions of the brain. Recording the electrical activity of different brain areas shows that when the animal is active (awake), slow waves are present only in the central complex. However, simultaneously with the animal becoming limp (sleeping), slow waves spread first to deuto-and then to protocerebrum, suggesting that the central complex of the crayfish brain acts as the sleep generator.

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“…Sleep has long been studied and described in mammalian species, but is now generally accepted as a universal neurological function experienced by a wide variety of species from humans, fish, lobsters, to insects (Mendoza-Angeles et al, 2007;Cirelli and Tononi, 2008;Zimmerman et al, 2008;Cirelli, 2009). Characteristics of sleep in the fruit fly, Drosophila melanogaster, are similar to those in mammalian species not only in terms of behavioral properties, such as circadian and homeostatic regulation and the changes in arousal threshold, but also in molecular and genetic properties (Hendricks et al, 2000;Shaw et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

Pan-Neuronal Knockdown of Calcineurin Reduces Sleep in the Fruit Fly,Drosophila melanogaster

Tomita¹,

Mitsuyoshi²,

Ueno³

et al. 2011

J. Neurosci.

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Sleep is a unique physiological state, which is behaviorally defined, and is broadly conserved across species from mammals to invertebrates such as insects. Because of the experimental accessibility provided by various novel animal models including the fruit fly, Drosophila melanogaster, there have been significant advances in the understanding of sleep. Although the physiological functions of sleep have not been fully elucidated, accumulating evidence indicates that sleep is necessary to maintain the plasticity of neuronal circuits and, hence, is essential in learning and memory. Calcineurin (Cn) is a heterodimeric phosphatase composed of CnA and CnB subunits and known to function in memory consolidation in the mammalian brain, but its neurological functions in the fruit fly are largely unknown. Here, we show that Cn is an important regulator of sleep in Drosophila. A pan-neuronal RNA interference-mediated knockdown of Cn expression resulted in sleep loss, whereas misexpression of the constitutively active form of a CnA protein led to increased sleep. Furthermore, CnA knockdown also impaired the retention of aversive olfactory memory. These results indicate a role for Cn and calcium-dependent signal transduction in sleep and memory regulation and may bring insight into the relationship between them.

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Slow waves during sleep in crayfish: A time–frequency analysis

Cited by 21 publications

References 26 publications

The phylogeny of sleep

The phylogeny of sleep

Slow waves during sleep in crayfish. Origin and spread

Pan-Neuronal Knockdown of Calcineurin Reduces Sleep in the Fruit Fly,Drosophila melanogaster

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