Hippocampus-dependent Place Learning Enables Spatial Flexibility in C57BL6/N Mice
Overview
Authors
Affiliations
Spatial navigation is a fundamental capability necessary in everyday life to locate food, social partners, and shelter. It results from two very different strategies: (1) place learning which enables for flexible way finding and (2) response learning that leads to a more rigid "route following." Despite the importance of knockout techniques that are only available in mice, little is known about mice' flexibility in spatial navigation tasks. Here we demonstrate for C57BL6/N mice in a water-cross maze (WCM) that only place learning enables spatial flexibility and relearning of a platform position, whereas response learning does not. This capability depends on an intact hippocampal formation, since hippocampus lesions by ibotenic acid (IA) disrupted relearning. In vivo manganese-enhanced magnetic resonance imaging revealed a volume loss of ≥60% of the hippocampus as a critical threshold for relearning impairments. In particular the changes in the left ventral hippocampus were indicative of relearning deficits. In summary, our findings establish the importance of hippocampus-dependent place learning for spatial flexibility and provide a first systematic analysis on spatial flexibility in mice.
Tessereau C, Xuan F, Mellor J, Dayan P, Dombeck D bioRxiv. 2025; .
PMID: 39829917 PMC: 11741294. DOI: 10.1101/2025.01.06.631465.
Pradhan A, Neumuller T, Klug C, Fuchs S, Schlegel M, Ballmann M Transl Psychiatry. 2023; 13(1):332.
PMID: 37891168 PMC: 10611770. DOI: 10.1038/s41398-023-02630-z.
NCK1 Modulates Neuronal Actin Dynamics and Promotes Dendritic Spine, Synapse, and Memory Formation.
Diab A, Wigerius M, Quinn D, Qi J, Shahin I, Paffile J J Neurosci. 2022; 43(6):885-901.
PMID: 36535770 PMC: 9908320. DOI: 10.1523/JNEUROSCI.0495-21.2022.
Neurobehavioral basis of Maier 3-table and other matching-to-place tasks.
Lalonde R, Strazielle C Cogn Affect Behav Neurosci. 2022; 23(2):237-247.
PMID: 36451026 DOI: 10.3758/s13415-022-01049-1.
Ebert T, Heinz D, Almeida-Correa S, Cruz R, Dethloff F, Stark T Front Aging Neurosci. 2021; 13:731603.
PMID: 34867270 PMC: 8633395. DOI: 10.3389/fnagi.2021.731603.