The Lateral Habenula as a Relay of Cortical Information to Process Working Memory
| Autor: | Lucas Lecourtier, Alexandra Barbelivien, Victor Mathis, Monique Majchrzak, Chantal Mathis, Jean-Christophe Cassel |
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| Přispěvatelé: | Laboratoire de neurosciences cognitives et adaptatives (LNCA), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Male
0301 basic medicine Microinjections Cognitive Neuroscience [SDV]Life Sciences [q-bio] Prefrontal Cortex Neuropsychological Tests law.invention 03 medical and health sciences Cellular and Molecular Neuroscience chemistry.chemical_compound 0302 clinical medicine Reward Relay law Neural Pathways Animals Rats Long-Evans GABA-A Receptor Agonists Prefrontal cortex Process (anatomy) ComputingMilieux_MISCELLANEOUS Habenula Motivation Muscimol GABAA receptor Working memory Cognition Memory Short-Term 030104 developmental biology chemistry Disconnection Psychology Neuroscience 030217 neurology & neurosurgery |
| Zdroj: | Cerebral Cortex Cerebral Cortex, Oxford University Press (OUP), 2017, ⟨10.1093/cercor/bhw316⟩ |
| ISSN: | 1047-3211 1460-2199 |
| Popis: | Working memory is a cognitive ability allowing the temporary storage of information to solve problems or adjust behavior. While working memory is known to mainly depend on the medial prefrontal cortex (mPFC), very few is known about how cortical information are relayed subcortically. By its connectivity, the lateral habenula (lHb) might act as a subcortical relay for cortical information. Indeed, the lHb receives inputs from several mPFC subregions, and recent findings suggest a role for the lHb in online processing of spatial information, a fundamental aspect of working memory. In rats, in a delayed non-matching to position paradigm, using focal microinjections of the GABAA agonist muscimol we showed that inactivation of the lHb (16 ng in 0.2 µL per side), as well as disconnection between the prelimbic region of the mPFC (mPFC/PrL, 32 ng in 0.4 µL in one hemisphere) and the lHb (16 ng in 0.2 µL in the lHb in the contralateral hemisphere) impaired working memory. The deficits were unlikely to result from motivational or motor deficits as muscimol did not affect reward collection or cue responding latencies, and did not increase the number of omissions. These results show for the first time the implication of the lHb in mPFC-dependent memory processes, likely as a relay of mPFC/PrL information. They also open new perspectives in the understanding of the top-down processing of high-level cognitive functions. |
| Databáze: | OpenAIRE |
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