A2 Review article, Literature review, Systematic review
Rhythmic Memory Consolidation in the Hippocampus (2022)
Nokia, M. S., & Penttonen, M. (2022). Rhythmic Memory Consolidation in the Hippocampus. Frontiers in Neural Circuits, 16, Article 885684. https://doi.org/10.3389/fncir.2022.885684
JYU authors or editors
Publication details
All authors or editors: Nokia, Miriam S.; Penttonen, Markku
Journal or series: Frontiers in Neural Circuits
eISSN: 1662-5110
Publication year: 2022
Publication date: 01/04/2022
Volume: 16
Article number: 885684
Publisher: Frontiers Media
Publication country: Switzerland
Publication language: English
DOI: https://doi.org/10.3389/fncir.2022.885684
Publication open access: Openly available
Publication channel open access: Open Access channel
Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/80452
Additional information: Perspective article.
Abstract
Functions of the brain and body are oscillatory in nature and organized according to a logarithmic scale. Brain oscillations and bodily functions such as respiration and heartbeat appear nested within each other and coupled together either based on phase or based on phase and amplitude. This facilitates communication in wide-spread neuronal networks and probably also between the body and the brain. It is a widely accepted view, that nested electrophysiological brain oscillations involving the neocortex, thalamus, and the hippocampus form the basis of memory consolidation. This applies especially to declarative memories, that is, memories of life events, for example. Here, we present our view of hippocampal contribution to the process of memory consolidation based on the general ideas stated above and on some recent findings on the topic by us and by other research groups. We propose that in addition to the interplay between neocortical slow oscillations, spindles, and hippocampal sharp-wave ripples during sleep, there are also additional mechanisms available in the hippocampus to control memory consolidation: a rather non-oscillatory hippocampal electrophysiological phenomenon called the dentate spike might provide a means to not only consolidate but to also modify the neural representation of declarative memories. Further, we suggest that memory consolidation in the hippocampus might be in part paced by breathing. These considerations might open new possibilities for regulating memory consolidation in rest and sleep.
Keywords: memory (cognition); hippocampus; neural networks (biology); oscillations; sleep; respiration; electrophysiology
Free keywords: electrophysiology; respiration; brain oscillations; sleep; neuronal circuits
Contributing organizations
Related projects
- Optimizing learning - synchrony of the brain and body as a tool?
- Nokia, Miriam
- Research Council of Finland
- Dentate gyrus - the gateway to memory?
- Penttonen, Markku
- Research Council of Finland
Ministry reporting: Yes
Reporting Year: 2022
JUFO rating: 1