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Feeding-induced olfactory cortex suppression reduces satiation

Binge feeding commonly leads to overeating. Experiencing flavor during food consumption contributes to satiation. Still, the interactions between flavor, binge feeding, and food intake remain unknown. Using miniscopes for in vivo calcium imaging in the anterior piriform cortex (aPC) in freely moving...

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Main Authors: Lo, Hung (Author) , Cañedo Riedel, Walter (Author) , Tantirigama, Malinda L. S. (Author) , Schoenherr, Anke (Author) , Moreno Velasquez, Laura (Author) , Faiss, Lukas (Author) , Kumar, Amit (Author) , Hakus, Aileen (Author) , Rost, Benjamin R. (Author) , Larkum, Matthew E. (Author) , Judkewitz, Benjamin (Author) , Stumpenhorst, Katharina (Author) , Rivalan, Marion (Author) , Winter, York (Author) , Russo, Eleonora (Author) , Kelsch, Wolfgang (Author) , Schmitz, Dietmar (Author) , Johenning, Friedrich W. (Author)
Format: Article (Journal)
Language:English
Published: 3 September 2025
In: Neuron
Year: 2025, Volume: 113, Issue: 17, Pages: 2856-2871,e1-e8
ISSN:1097-4199
DOI:10.1016/j.neuron.2025.07.020
Online Access:Verlag, kostenfrei, Volltext: https://doi.org/10.1016/j.neuron.2025.07.020
Verlag, kostenfrei, Volltext: https://www.sciencedirect.com/science/article/pii/S0896627325005471
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Author Notes:Hung Lo, Walter Cañedo Riedel, Malinda L.S. Tantirigama, Anke Schoenherr, Laura Moreno Velasquez, Lukas Faiss, Amit Kumar, Aileen Hakus, Benjamin R. Rost, Matthew E. Larkum, Benjamin Judkewitz, Katharina Stumpenhorst, Marion Rivalan, York Winter, Eleonora Russo, Wolfgang Kelsch, Dietmar Schmitz, and Friedrich W. Johenning
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Summary:Binge feeding commonly leads to overeating. Experiencing flavor during food consumption contributes to satiation. Still, the interactions between flavor, binge feeding, and food intake remain unknown. Using miniscopes for in vivo calcium imaging in the anterior piriform cortex (aPC) in freely moving mice, we identified specific excitatory neuronal responses to different food flavors during slow feeding. Switching from slow feeding to binge feeding transformed these specific responses into an unspecific global suppression of neuronal activity. Consummatory aPC suppression scaled with food value. GABAergic neurons in the olfactory tubercle (OT) projected to the aPC and mirrored activity patterns in the aPC under different feeding conditions, consistent with transmitting a value signal. Closed-loop optogenetic manipulations demonstrated that suppressing the aPC during binge bouts reduces satiation by selectively prolonging feeding bouts. We propose that aPC suppression by the OT enhances food intake by reducing sensory satiation during binge feeding-associated states of high motivation.
Item Description:Online verfügbar 15 August 2025, Version des Artikels 3 September 2025
Gesehen am 13.02.2026
Physical Description:Online Resource
ISSN:1097-4199
DOI:10.1016/j.neuron.2025.07.020

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