Insulin controls olfactory gain at the first central synapse by regulating periglomerular neuron excitability
Merve Öncül, Cedric Stefens, Emma Smith, Shreya Choudhuri, B Filippi, Jamie Johnston
The paper shows insulin reduces olfactory sensitivity by inhibiting periglomerular neurons in mice, altering sensory input before it reaches mitral cells.
bioRxiv · Jul 27, 2026 · PreprintNeuroscience