Spontaneous neural activity of the anterodorsal lobe and entopeduncular nucleus in adult zebrafish: A putative homologue of hippocampal sharp waves

Vargas, Rafael; Þorsteinsson, Haraldur; Karlsson, Karl

doi:10.1016/j.bbr.2011.12.025

Cited by 23 publications

(24 citation statements)

References 63 publications

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“…A detailed comparison of sleep–wake cycle development in zebrafish with dense group sampling over the first weeks post-fertilization may be warranted. This is also a period of synaptogenesis and pruning of neural circuits and also the age in which the fish are, conveniently, highly amenable to many of the molecular and neurophysiological tools available ( Fetcho, 2005 , 2007 ; McLean and Fetcho, 2008 ; Appelbaum et al, 2010 ; Friedrich et al, 2010 ; Vargas et al, 2012 ). We suggest that in terms of delineating the neural circuits of sleep, focusing on mapping behavioral to neural changes over this period in early ontogeny will be fruitful.…”

Section: Discussionmentioning

confidence: 99%

The ontogeny of sleep–wake cycles in zebrafish: a comparison to humans

Sorribes

Þorsteinsson

Arnardóttir

et al. 2013

Front. Neural Circuits

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Zebrafish (Danio rerio) are used extensively in sleep research; both to further understanding of sleep in general and also as a model of human sleep. To date, sleep studies have been performed in larval and adult zebrafish but no efforts have been made to document the ontogeny of zebrafish sleep–wake cycles. Because sleep differs across phylogeny and ontogeny it is important to validate the use of zebrafish in elucidating the neural substrates of sleep. Here we describe the development of sleep and wake across the zebrafish lifespan and how it compares to humans. We find power-law distributions to best fit wake bout data but demonstrate that exponential distributions, previously used to describe sleep bout distributions, fail to adequately account for the data in either species. Regardless, the data reveal remarkable similarities in the ontogeny of sleep cycles in zebrafish and humans. Moreover, as seen in other organisms, zebrafish sleep levels are highest early in ontogeny and sleep and wake bouts gradually consolidate to form the adult sleep pattern. Finally, sleep percentage, bout duration, bout number, and sleep fragmentation are shown to allow for meaningful comparisons between zebrafish and human sleep.

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Section: Discussionmentioning

confidence: 99%

The ontogeny of sleep–wake cycles in zebrafish: a comparison to humans

Sorribes

Þorsteinsson

Arnardóttir

et al. 2013

Front. Neural Circuits

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“…The majority of sharp wave-ripple (SWR) and replay studies have been performed in mice or rats, but SWRs have also been described in vivo in cats 212,213 , bats 214 , rabbits 104,106 , monkeys 170,184,189,215,216 and humans 150,217–219 . SWR activity has also been described in the Australian bearded dragon (Pogona vitticeps) , but in a region that is not considered to be a hippocampal analogue 220 , and whole zebrafish brains in vitro show SWR-like activity 221 . Although sequential replay has been observed only in rodents, the relationship described in rodents between SWRs and memory-dependent behaviour has also been reported in rabbits 104,106 , non-human primates 184 and humans 217 .…”

Section: Fig 1 |mentioning

confidence: 99%

The hippocampal sharp wave–ripple in memory retrieval for immediate use and consolidation

2018

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Various cognitive functions have long been known to require the hippocampus. Recently, progress has been made in identifying the hippocampal neural activity patterns that implement these functions. One such pattern is the sharp wave-ripple (SWR), an event associated with highly synchronous neural firing in the hippocampus and modulation of neural activity in distributed brain regions. Hippocampal spiking during SWRs can represent past or potential future experience, and SWR-related interventions can alter subsequent memory performance. These findings and others suggest that SWRs support both memory consolidation and memory retrieval for processes such as decision-making. In addition, studies have identified distinct types of SWR based on representational content, behavioural state and physiological features. These various findings regarding SWRs suggest that different SWR types correspond to different cognitive functions, such as retrieval and consolidation. Here, we introduce another possibility — that a single SWR may support more than one cognitive function. Taking into account classic psychological theories and recent molecular results that suggest that retrieval and consolidation share mechanisms, we propose that the SWR mediates the retrieval of stored representations that can be utilized immediately by downstream circuits in decision-making, planning, recollection and/or imagination while simultaneously initiating memory consolidation processes.

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“…The red arrows indicate the lateral line organ. The ADP (magenta area) is proposed to be the homologue of mammalian hippocampus [4]. (b) Coronal section (from the white dashed arrow b in a) of the telencephalon.…”

Section: (C) Habenula: the Dorsal Diencephalonmentioning

confidence: 99%

Zebrafish forebrain and temporal conditioning

Cheng

Jesuthasan

Penney

2014

Phil. Trans. R. Soc. B

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The rise of zebrafish as a neuroscience research model organism, in conjunction with recent progress in single-cell resolution whole-brain imaging of larval zebrafish, opens a new window of opportunity for research on interval timing. In this article, we review zebrafish neuroanatomy and neuromodulatory systems, with particular focus on identifying homologies between the zebrafish forebrain and the mammalian forebrain. The neuroanatomical and neurochemical basis of interval timing is summarized with emphasis on the potential of using zebrafish to reveal the neural circuits for interval timing. The behavioural repertoire of larval zebrafish is reviewed and we demonstrate that larval zebrafish are capable of expecting a stimulus at a precise time point with minimal training. In conclusion, we propose that interval timing research using zebrafish and whole-brain calcium imaging at single-cell resolution will contribute to our understanding of how timing and time perception originate in the vertebrate brain from the level of single cells to circuits.

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Spontaneous neural activity of the anterodorsal lobe and entopeduncular nucleus in adult zebrafish: A putative homologue of hippocampal sharp waves

Cited by 23 publications

References 63 publications

The ontogeny of sleep–wake cycles in zebrafish: a comparison to humans

The ontogeny of sleep–wake cycles in zebrafish: a comparison to humans

The hippocampal sharp wave–ripple in memory retrieval for immediate use and consolidation

Zebrafish forebrain and temporal conditioning

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