ArticleProceedings of the National Academy of Sciences of the United States of America2025
The reuniens thalamus recruits recurrent excitation in the medial prefrontal cortex.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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5 citing papers in PubMed.
- Interpretable Machine Learning Identifies an Emergent Absence Seizure Mechanism.bioRxiv : the preprint server for biology · 2026Article
- Thalamic, Hippocampal, and Amygdalar subregional volumetric alterations in neonates with isolated aEEG abnormalities.Neuroradiology · 2026Article
- Beyond seizure control: Identifying deficits in cognitive networks in absence epilepsy.Science advances · 2026Article
- The thalamic nucleus reuniens orchestrates prefrontal-hippocampal synchrony in memory, emotion, and disease.Frontiers in behavioral neuroscience · 2026Review
- Excitatory Synaptic Transmission Is Differentially Modulated by Opioid Receptors along the Claustrocingulate Pathway.eNeuro · 2025Article
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Abstract
The medial prefrontal cortex (mPFC) and hippocampus are critical for memory retrieval, decision making, and emotional regulation. While ventral CA1 (vCA1) shows direct and reciprocal connections with mPFC, dorsal CA1 (dCA1) forms indirect pathways to mPFC, notably via the thalamic reuniens nucleus (Re). Neuroanatomical tracing has documented structural connectivity of this indirect pathway through Re however, its functional operation is largely unexplored. Here, we used in vivo and in vitro electrophysiology along with optogenetics to address this question. Whole-cell patch-clamp recordings in acute mouse brain slices revealed both monosynaptic excitatory responses and disynaptic feedforward inhibition at Re-mPFC synapses. However, we also identified a prolonged excitation of mPFC by Re. These early monosynaptic and late recurrent components are in marked contrast to the primarily feedforward inhibition characteristic of thalamic inputs to the neocortex. Local field potential recordings in mPFC brain slices revealed prolonged synaptic activity throughout all cortical lamina upon Re activation, with the late excitation enhanced by blockade of parvalbumin neurons and GABA
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