Breathing coordinates cortico-hippocampal dynamics in mice during offline states

Nikolaos Karalis () and Anton Sirota ()
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Nikolaos Karalis: Ludwig-Maximilian University
Anton Sirota: Ludwig-Maximilian University

Nature Communications, 2022, vol. 13, issue 1, 1-20

Abstract: Abstract Network dynamics have been proposed as a mechanistic substrate for the information transfer across cortical and hippocampal circuits. However, little is known about the mechanisms that synchronize and coordinate these processes across widespread brain regions during offline states. Here we address the hypothesis that breathing acts as an oscillatory pacemaker, persistently coupling distributed brain circuit dynamics. Using large-scale recordings from a number of cortical and subcortical brain regions in behaving mice, we uncover the presence of an intracerebral respiratory corollary discharge, that modulates neural activity across these circuits. During offline states, the respiratory modulation underlies the coupling of hippocampal sharp-wave ripples and cortical DOWN/UP state transitions, which mediates systems memory consolidation. These results highlight breathing, a perennial brain rhythm, as an oscillatory scaffold for the functional coordination of the limbic circuit that supports the segregation and integration of information flow across neuronal networks during offline states.

Date: 2022
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DOI: 10.1038/s41467-022-28090-5

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