Local cortical activity of distant brain areas can phase-lock to the olfactory bulb's respiratory rhythm in the freely behaving rat

Journal of Neurophysiology
Daniel Rojas-LíbanoPedro E Maldonado

Abstract

An important unresolved question about neural processing is the mechanism by which distant brain areas coordinate their activities and relate their local processing to global neural events. A potential candidate for the local-global integration are slow rhythms such as respiration. In this study, we asked if there are modulations of local cortical processing that are phase-locked to (peripheral) sensory-motor exploratory rhythms. We studied rats on an elevated platform where they would spontaneously display exploratory and rest behaviors. Concurrent with behavior, we monitored whisking through electromyography and the respiratory rhythm from the olfactory bulb (OB) local field potential (LFP). We also recorded LFPs from dorsal hippocampus, primary motor cortex, primary somatosensory cortex, and primary visual cortex. We defined exploration as simultaneous whisking and sniffing above 5 Hz and found that this activity peaked at ~8 Hz. We considered rest as the absence of whisking and sniffing, and in this case, respiration occurred at ~3 Hz. We found a consistent shift across all areas toward these rhythm peaks accompanying behavioral changes. We also found, across areas, that LFP gamma (70-100 Hz) amplitude could phase-lock to t...Continue Reading

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Citations

Jun 20, 2019·Journal of Neurophysiology·Detlef H HeckLeslie M Kay
Aug 28, 2019·The European Journal of Neuroscience·Matías CavelliPablo Torterolo
Dec 5, 2019·Nature Communications·Qingguang ZhangPatrick J Drew
Jan 24, 2019·Frontiers in Systems Neuroscience·James F A Poulet, Sylvain Crochet
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Oct 6, 2020·Frontiers in Neuroanatomy·Cindy F YangJack L Feldman
Feb 7, 2020·Neuroscience and Biobehavioral Reviews·Vojislav MaricJyoti Mishra
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Mar 31, 2021·Scientific Reports·Baptiste GirinNathalie Buonviso
Jul 24, 2021·Sleep·Maximilian HammerAdriano B L Tort

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