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Replay bursts in humans coincide with activation of the default mode and parietal alpha networks

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  • Cameron Higgins, University of Oxford
  • ,
  • Yunzhe Liu, University College London, Max Planck University College London Centre for Computational Psychiatry and Ageing Research
  • ,
  • Diego Vidaurre
  • Zeb Kurth-Nelson, Max Planck University College London Centre for Computational Psychiatry and Ageing Research, Alphabet Inc.
  • ,
  • Ray Dolan, University College London, Max Planck University College London Centre for Computational Psychiatry and Ageing Research
  • ,
  • Timothy Behrens, University of Oxford, University College London
  • ,
  • Mark Woolrich, University of Oxford

Our brains at rest spontaneously replay recently acquired information, but how this process is orchestrated to avoid interference with ongoing cognition is an open question. Here we investigated whether replay coincided with spontaneous patterns of whole-brain activity. We found, in two separate datasets, that replay sequences were packaged into transient bursts occurring selectively during activation of the default mode network (DMN) and parietal alpha networks. These networks are believed to support inwardly oriented attention and inhibit bottom-up sensory processing and were characterized by widespread synchronized oscillations coupled to increases in high frequency power, mechanisms thought to coordinate information flow between disparate cortical areas. Our data reveal a tight correspondence between two widely studied phenomena in neural physiology and suggest that the DMN may coordinate replay bursts in a manner that minimizes interference with ongoing cognition.

Original languageEnglish
JournalNeuron
Volume109
Issue5
Pages (from-to)882-893.e7
Number of pages20
ISSN0896-6273
DOIs
Publication statusPublished - 3 Mar 2021

    Research areas

  • default mode network, parietal alpha network, replay, resting-state networks, SLEEP, REPRESENTATIONS, RESTING STATE NETWORKS, FUNCTIONAL CONNECTIVITY, BOLD FMRI, MEMORY CONSOLIDATION, CORTEX, FLUCTUATIONS, MEDIAL TEMPORAL-LOBE, OSCILLATIONS, Humans, Male, Young Adult, Adult, Female, Default Mode Network/physiology, Frontal Lobe/physiology, Parietal Lobe/physiology, Alpha Rhythm, Brain/physiology, Temporal Lobe/physiology

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