Replay

Definition

Replay is the process of watching a video or sound recording more than once. Replay is often used in studies of animal behaviour where individual aspects of the behaviour need to be measured or monitored.

Latest Research and Reviews

  • Research | | open

    During non-REM sleep, the thalamus produces spindles and the cortex produces downstates, but the interaction between these two areas in these sleep phenomena is not understood. Here, authors describe the dynamic loop between the thalamus and cortex that organizes the production of spindles and downstates in the human brain.

    • Rachel A. Mak-McCully
    • , Matthieu Rolland
    • , Anna Sargsyan
    • , Chris Gonzalez
    • , Michel Magnin
    • , Patrick Chauvel
    • , Marc Rey
    • , Hélène Bastuji
    •  & Eric Halgren
  • Research | | open

    Episodic memory consolidation requires activity in hippocampal area CA1. Here the authors report that pharmacogenetic inhibition of CA1 PV+ interneuron firing after fear learning blocks memory consolidation and disrupts associated enhancement in network oscillations and stabilization of functional connectivity patterns.

    • Nicolette Ognjanovski
    • , Samantha Schaeffer
    • , Jiaxing Wu
    • , Sima Mofakham
    • , Daniel Maruyama
    • , Michal Zochowski
    •  & Sara J. Aton
  • Research |

    The authors used rewarding stimulations triggered by place cell activity during sleep to create a place preference for the related place field in mice once they woke up. This shows that an explicit memory trace can be created during sleep and demonstrates a causal role of place cells in spatial navigation.

    • Gaetan de Lavilléon
    • , Marie Masako Lacroix
    • , Laure Rondi-Reig
    •  & Karim Benchenane
    Nature Neuroscience 18, 493–495
  • Research |

    Recording from population of head-direction cells across brain states, the authors provide experimental demonstration of the existence of internally organized attractor: the sequential activity of head direction neurons observed in the waking mouse persists during sleep, and this 'neuronal compass' always points toward well-defined directions.

    • Adrien Peyrache
    • , Marie M Lacroix
    • , Peter C Petersen
    •  & György Buzsáki
    Nature Neuroscience 18, 569–575
  • Research |

    In this study, the authors show that optogenetic photostimulation of dopaminergic (DA) neurons in the ventral tegmental area during exploration can enhance subsequent sharp wave/ripple-mediated reactivation of spatial memory. These results suggest that midbrain DA neurons are key mediators of hippocampal-dependent memory persistence.

    • Colin G McNamara
    • , Álvaro Tejero-Cantero
    • , Stéphanie Trouche
    • , Natalia Campo-Urriza
    •  & David Dupret
    Nature Neuroscience 17, 1658–1660

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