Learning differentially shapes prefrontal and hippocampal activity during classical conditioning
- Radboud University, Netherlands
Abstract
The ability to use sensory cues to inform goal directed actions is a critical component of behavior. To study how sounds guide anticipatory licking during classical conditioning, we employed high-density electrophysiological recordings from the hippocampal CA1 area and the prefrontal cortex (PFC) in mice. CA1 and PFC neurons undergo distinct learning dependent changes at the single cell level and maintain representations of cue identity at the population level. In addition, reactivation of task-related neuronal assemblies during hippocampal awake Sharp-Wave Ripples (aSWR) changed within individual sessions in CA1 and over the course of multiple sessions in PFC. Despite both areas being highly engaged and synchronized during the task, we found no evidence for coordinated single cell or assembly activity during conditioning trials or aSWR. Taken together, our findings support the notion that persistent firing and reactivation of task-related neural activity patterns in CA1 and PFC support learning during classical conditioning.
Data availability
All data are publicly available on the Donders Repository (https://doi.org/10.34973/hp7x-4241). Analysis scripts can be downloaded via GitHub (https://github.com/chanlukas/AATCstudy).
Article and author information
Author details
Funding
Studienstiftung des Deutschen Volkes
- Jan L Klee
Nederlandse Organisatie voor Wetenschappelijk Onderzoek (612.001.853)
- Bryan C Souza
NWA 'Bio-Art' project
- Francesco P Battaglia
The funders had no role in study design, data collection and interpretation, or the decision to submit the work for publication.
Ethics
Animal experimentation: This study was approved by the Central Commissie Dierproeven (CCD) in the Netherlands and conducted in accordance with the Experiments on Animals Act and the European Directive 2010/63/EU on animal research.
Copyright
© 2021, Klee et al.
This article is distributed under the terms of the Creative Commons Attribution License permitting unrestricted use and redistribution provided that the original author and source are credited.
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Learning differentially shapes prefrontal and hippocampal activity during classical conditioning
eLife 10:e65456.
https://doi.org/10.7554/eLife.65456
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