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© Shalin E. Abraham, Michael Häusser, Christoph Schmidt-Hieber, University College London
The dentate gyrus is one of the few mammalian brain regions where new neurons are generated throughout life. The image was taken with a confocal microscope from a parasagittal slice of the mouse hippocampus. Cells were labelled with fluorescent markers: Newly generated neurons are red (doublecortin), mature neurons are green (NeuN), and nuclei are blue (DAPI)
Publication : Cell

Targeted Activation of Hippocampal Place Cells Drives Memory-Guided Spatial Behavior

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Cell - 10 Dec 2020

Robinson NTM, Descamps LAL, Russell LE, Buchholz MO, Bicknell BA, Antonov GK, Lau JYN, Nutbrown R, Schmidt-Hieber C, Häusser M

Link to Pubmed [PMID] – 33159859

Link to DOI – 10.1016/j.cell.2020.09.061

Cell . 2020 Dec 10;183(6):1586-1599

The hippocampus is crucial for spatial navigation and episodic memory formation. Hippocampal place cells exhibit spatially selective activity within an environment and have been proposed to form the neural basis of a cognitive map of space that supports these mnemonic functions. However, the direct influence of place cell activity on spatial navigation behavior has not yet been demonstrated. Using an ‘all-optical’ combination of simultaneous two-photon calcium imaging and two-photon optogenetics, we identified and selectively activated place cells that encoded behaviorally relevant locations in a virtual reality environment. Targeted stimulation of a small number of place cells was sufficient to bias the behavior of animals during a spatial memory task, providing causal evidence that hippocampal place cells actively support spatial navigation and memory.

https://www.cell.com/cell/fulltext/S0092-8674(20)31302-7