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Coupling of Hippocampal Theta and Ripples with Pontogeniculooccipital Waves by Ramirez-Villegas, Juan F.; Besserve, Michel; Murayama, Yusuke; Evrard, Henry C.; Oeltermann, Axel; Logothetis, Nikos K. is a Physics and Astronomy article available to read on EtoBox.
What is Coupling of Hippocampal Theta and Ripples with Pontogeniculooccipital Waves about?
The hippocampus has a major role in encoding and consolidating long-term memories, and undergoes plastic changes during sleep. These changes require precise homeostatic control by subcortical neuromodulatory structures. The underlying mechanisms of this phenomenon, however, remain unknown. Here, using multi-structure recordings in macaque monkeys, we show that the brainstem transiently modulates hippocampal network events through phasic pontine waves known as pontogeniculooccipital waves (PGO waves). Two physiologically distinct types of PGO wave appear to occur sequentially, selectively influencing high-frequency ripples and low-frequency theta events, respectively. The two types of PGO wave are associated with opposite hippocampal spike-field coupling, prompting periods of high neural synchrony of neural populations during periods of ripple and theta instances. The coupling between PGO waves and ripples, classically associated with distinct sleep stages, supports the notion that a global coordination mechanism of hippocampal sleep dynamics by cholinergic pontine transients may promote systems and synaptic memory consolidation as well as synaptic homeostasis.
Who reads Coupling of Hippocampal Theta and Ripples with Pontogeniculooccipital Waves?
It is typically read by researchers, students, and practitioners in Physics and Astronomy.
- Author
- Ramirez-Villegas, Juan F.; Besserve, Michel; Murayama, Yusuke; Evrard, Henry C.; Oeltermann, Axel; Logothetis, Nikos K.
- Publisher
- Nature Publishing Group; Springer Science and Business Media LLC; Society for Mining, Metallurgy and Exploration Inc.; Publons; ScienceOpen; Island Press (ISSN 0028-0836)
- Published
- 2020
- Language
- EN
- Field
- Physics and Astronomy (Physical Sciences)