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Séminaire – Tomonori Takeuchi

lundi 17 juin 2019 / 11:30

Memory consolidation, dopamine and two distinct novelty systems

Lieu : Centre Broca Nouvelle-Aquitaine


Tomonori Takeuchi, Associate Professor

Department of Biomedicine,
The Danish Research Institute of Translational Neuroscience (DANDRITE),
Aarhus Institute of Advanced Studies,
Aarhus University,
Denmark
http://dandrite.au.dk/people/team-leaders/tomonori-takeuchi/

Invité par Valentin Nägerl, IINS


Abstract:

Many people have vivid memories of the first dinner date with their partner, including details like the name of the restaurant and the food they had. In contrast, it is very difficult to remember what you had for dinner a few weeks ago. Most everyday memories may be formed automatically in the hippocampus. The key role of this memory system is to filter out unnecessary information, but keep the important memories by a mechanism that involves novelty-associated dopamine release in the hippocampus. Recently, our studies (Takeuchi et al., Nature, 2016) revealed that projections from neurons in the locus coeruleus to the hippocampus can drive novelty-associated enhancement of memory retention through non-canonical release of dopamine in the hippocampus, in line with the synaptic tagging and capture theory of initial memory consolidation. These studies also raise a possibility that the impact of distinct novel experiences which, by their very nature, bear minimal relationship to past experiences (‘distinct novelty’) may differ from novel experiences that share some commonality with past experiences (‘common novelty’) (Yamasaki and Takeuchi, Neural Plasticity, 2017; Duszkiewicz et al., Trends Neurosci, 2019). We now propose that memory of events accompanied by novelty can be selectively retained through two distinct dopaminergic mechanisms, depending on the nature of the novel experience itself.

Prochainement

  1. Conférence mensuelle (PhD seminar series) – Laurent Bourdieu

    vendredi 6 septembre 2019 / 11:30

    Fast 3D imaging of neuronal activity in visual cortex across multiple layers in awake mice

  2. Cajal lectures : Whole brain imaging

    lundi 9 septembre 2019 - vendredi 27 septembre 2019

    Free entrance lectures / Venue: CGFB

  3. Séminaire – Francisco Papaleo

    vendredi 13 septembre 2019 / 11:30

    Bottom-Up and Top-Down Control of Emotion Recognition.

  4. LabEx TRAIL scientific day

    lundi 16 septembre 2019 / 14:00 - 18:00

    Dedicated to brain connectivity.

  5. Journée Synapse

    mardi 17 septembre 2019

    Centre Broca Nouvelle-Aquitaine


Conférence internationale : REWARD

Du 2 au 4 octobre

L’événement en un coup d’oeil :
télécharger le livret (programme,
inscription, soumission d’abstract…)

brainconf.u-bordeaux.fr

Détails

Date :
lundi 17 juin 2019
Heure :
11:30
Catégorie d’Évènement: