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Precise coupling of the thalamic head-direction system to hippocampal ripples

Author

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  • Guillaume Viejo

    (McGill University)

  • Adrien Peyrache

    (McGill University)

Abstract

The anterior thalamus is a key relay of neuronal signals within the limbic system. During sleep, the occurrence of hippocampal sharp wave-ripples (SWRs), believed to mediate consolidation of explicit memories, is modulated by thalamocortical network activity, yet how information is routed around SWRs and how this communication depends on neuronal dynamics remains unclear. Here, by simultaneously recording ensembles of neurons in the anterior thalamus and local field potentials in the CA1 area of the hippocampus, we show that the head-direction (HD) cells of the anterodorsal nucleus are set in stable directions immediately before SWRs. This response contrasts with other thalamic cells that exhibit diverse couplings to the hippocampus related to their intrinsic dynamics but independent of their anatomical location. Thus, our data suggest a specific and homogeneous contribution of the HD signal to hippocampal activity and a diverse and cell-specific coupling of non-HD neurons.

Suggested Citation

  • Guillaume Viejo & Adrien Peyrache, 2020. "Precise coupling of the thalamic head-direction system to hippocampal ripples," Nature Communications, Nature, vol. 11(1), pages 1-14, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-15842-4
    DOI: 10.1038/s41467-020-15842-4
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    Cited by:

    1. Kadjita Asumbisa & Adrien Peyrache & Stuart Trenholm, 2022. "Flexible cue anchoring strategies enable stable head direction coding in both sighted and blind animals," Nature Communications, Nature, vol. 13(1), pages 1-15, December.
    2. Thomas Schreiner & Elisabeth Kaufmann & Soheyl Noachtar & Jan-Hinnerk Mehrkens & Tobias Staudigl, 2022. "The human thalamus orchestrates neocortical oscillations during NREM sleep," Nature Communications, Nature, vol. 13(1), pages 1-16, December.

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