Neural mechanisms underlying memory of spatial contexts, goal distance and events
Sébastien Royer
Korea Institute of Science and Technologie

Résumé
In this seminar, I will present our research on various facets of episodic memory using the combination of silicon probe recordings, treadmill learning tasks and neural network modeling. The learning of a spatial context, such as the sequence of cafés and restaurants along a street, was investigated by monitoring the development of dentate gyrus place cells as mice learned a sequence of visual-tactile cues fixed on a treadmill belt. The learning of an event, such as the encounter of a butterfly, was investigated by monitoring place cell responses to the occasional encounter of a motorized butterfly dummy at a specific position of the treadmill. Neural network models based on competitive learning could reproduced the transformation of place cells accompanying belt learning and butterfly encounters, suggesting that the same mechanism of competitive learning support both the slow learning of spatial environments and the fast ‘one-shot’ encoding of events.

Invité par David Robbe

Vendredi 17 juillet 2026 à 11h – Salle de conférence de l’Inmed