Neural representations during sleep: From sensory processing to memory traces

Hennevin, Elizabeth; Huetz, Chloé; Edeline, Jean‐Marc

doi:10.1016/j.nlm.2006.10.006

Cited by 121 publications

(84 citation statements)

References 314 publications

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“…the ability of the brain to change its structure in response to the environment such as when memories are reorganized and reactivated (Hennevin et al 2007). Extensive research has examined the relationship between plasticity and sleep, especially in regard to learning and memory (see Maquet 2001;Maquet et al 2003 and references therein;Hennevin et al 2007). Much of this work has been directed towards humans and laboratory rats.…”

Section: Why We Sleepmentioning

confidence: 99%

The ecological relevance of sleep: the trade-off between sleep, memory and energy conservation

Roth

Rattenborg

Pravosudov

2010

Phil. Trans. R. Soc. B

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All animals in which sleep has been studied express signs of sleep-like behaviour, suggesting that sleep must have some fundamental functions that are sustained by natural selection. Those functions, however, are still not clear. Here, we examine the ecological relevance of sleep from the perspective of behavioural trade-offs that might affect fitness. Specifically, we highlight the advantage of using food-caching animals as a system in which a conflict might occur between engaging in sleep for memory/learning and hypothermia/torpor to conserve energy. We briefly review the evidence for the importance of sleep for memory, the importance of memory for food-caching animals and the conflicts that might occur between sleep and energy conservation in these animals. We suggest that the food-caching paradigm represents a naturalistic and experimentally practical system that provides the opportunity for a new direction in sleep research that will expand our understanding of sleep, especially within the context of ecological and evolutionary processes.

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Section: Why We Sleepmentioning

confidence: 99%

The ecological relevance of sleep: the trade-off between sleep, memory and energy conservation

Roth

Rattenborg

Pravosudov

2010

Phil. Trans. R. Soc. B

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“…Such a mechanism has since been shown to modulate sensory responses in SWS (Massimini et al, 2003) and other nonsleep states (Stern et al, 1997;Poulet and Petersen, 2008). However, it remains unclear how sound-evoked activity in auditory cortex would be modified during SWS given, among other factors, the interplay of slow oscillations and reduced feedforward thalamic input (Hennevin et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Altered Neural Responses to Sounds in Primate Primary Auditory Cortex during Slow-Wave Sleep

Issa¹,

Wang²

2011

J. Neurosci.

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“…For example, in the avian brain, the selective responses for the BOS observed during periods of synchronized EEG (anesthesia or slow-wave sleep) were not observed in awake birds (Schmidt and Konishi, 1998;Schmidt, 2003, 2004). Similarly, the strength of evoked responses and the temporal discharge patterns in the mammalian auditory system differ considerably between anesthetized and awake animals (Torterolo et al, 2002;CotillonWilliams andEdeline, 2003, 2004;Massaux et al, 2004;Populin, 2005); for other references see (Hennevin et al, 2007). Thus, in the present study, to ensure that the anesthetic did not mask some aspect of the neural code that is in use in awake animals, we also analyzed neuronal spike trains recorded in the auditory cortex of awake guinea pigs.…”

Section: Introductionmentioning

confidence: 99%

A Spike-Timing Code for Discriminating Conspecific Vocalizations in the Thalamocortical System of Anesthetized and Awake Guinea Pigs

Huetz¹,

Philibert²,

Edeline³

2009

J. Neurosci.

103

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Understanding how communication sounds are processed and encoded in the central auditory system is critical to understanding the neural bases of acoustic communication. Here, we examined neuronal representations of species-specific vocalizations, which are communication sounds that many species rely on for survival and social interaction. In some species, the evoked responses of auditory cortex neurons are stronger in response to natural conspecific vocalizations than to their time-reversed, spectrally identical, counterparts. We applied information theory-based analyses to single-unit spike trains collected in the auditory cortex (n ϭ 139) and auditory thalamus (n ϭ 135) of anesthetized animals as well as in the auditory cortex (n ϭ 119) of awake guinea pigs during presentation of four conspecific vocalizations. Few thalamic and cortical cells (Ͻ10%) displayed a firing rate preference for the natural version of these vocalizations. In contrast, when the information transmitted by the spike trains was quantified with a temporal precision of 10 -50 ms, many cells (Ͼ75%) displayed a significant amount of information (i.e., Ͼ2SD above chance levels), especially in the awake condition. The computed correlation index between spike trains (R corr , defined by Schreiber et al., 2003) indicated similar spike-timing reliability for both the natural and time-reversed versions of each vocalization, but higher reliability for awake animals compared with anesthetized animals. Based on temporal discharge patterns, even cells that were only weakly responsive to vocalizations displayed a significant level of information. These findings emphasize the importance of temporal discharge patterns as a coding mechanism for natural communication sounds, particularly in awake animals.

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Neural representations during sleep: From sensory processing to memory traces

Cited by 121 publications

References 314 publications

The ecological relevance of sleep: the trade-off between sleep, memory and energy conservation

The ecological relevance of sleep: the trade-off between sleep, memory and energy conservation

Altered Neural Responses to Sounds in Primate Primary Auditory Cortex during Slow-Wave Sleep

A Spike-Timing Code for Discriminating Conspecific Vocalizations in the Thalamocortical System of Anesthetized and Awake Guinea Pigs

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