Search results for "object recognition memory"

showing 2 items of 2 documents

Specific Hippocampal Interneurons Shape Consolidation of Recognition Memory

2020

Summary A complex array of inhibitory interneurons tightly controls hippocampal activity, but how such diversity specifically affects memory processes is not well understood. We find that a small subclass of type 1 cannabinoid receptor (CB1R)-expressing hippocampal interneurons determines episodic-like memory consolidation by linking dopamine D1 receptor (D1R) signaling to GABAergic transmission. Mice lacking CB1Rs in D1-positive cells (D1-CB1-KO) display impairment in long-term, but not short-term, novel object recognition memory (NOR). Re-expression of CB1Rs in hippocampal D1R-positive cells rescues this NOR deficit. Learning induces an enhancement of in vivo hippocampal long-term potenti…

MaleAnimals CB1 receptor D1 receptor Dopamine Endocannabinoid system GABA Hippocampus Interneurons Long-term potentiation Male Memory Mice Novel object recognition Recognition PsychologyCB1 receptorCB1 cannabinoid receptorsD(1) receptorhippocampus[SDV]Life Sciences [q-bio]D1 receptorneuronsCB(1) receptorArticleCA1informationMiceGABAMemoryAnimalsendocannabinoid systemlong-term potentiationinterneuronsmusculoskeletal neural and ocular physiologyRecognition Psychologyepisodic memoryinhibition[SDV] Life Sciences [q-bio]modulationnervous systemdopamineLTPnovel object recognition memory
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Mitochondrial cannabinoid receptors gate corticosterone impact on novel object recognition

2023

: Corticosteroid-mediated stress responses require the activation of complex brain circuits involving mitochondrial activity, but the underlying cellular and molecular mechanisms are scantly known. The endocannabinoid system is implicated in stress coping, and it can directly regulate brain mitochondrial functions via type 1 cannabinoid (CB1) receptors associated with mitochondrial membranes (mtCB1). In this study, we show that the impairing effect of corticosterone in the novel object recognition (NOR) task in mice requires mtCB1 receptors and the regulation of mitochondrial calcium levels in neurons. Different brain circuits are modulated by this mechanism to mediate the impact of cortico…

mitochondrial calciumGABAretrieval.hippocampucorticosteronemitochondrial CB(1) receptorGeneral Neurosciencenoradrenalineobject recognition memoryendocannabinoidconsolidationlocus coeruleuNeuron
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