Axonal subthreshold voltage signaling along hippocampal mossy fiber (Kamiya 2022)

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Subthreshold depolarization of soma passively propagates into the axons for a substantial distance and thereby caused enhancement of the transmitter release from the axon terminals of hippocampal mossy fibers. Here we developed the granule cell-mossy fiber model implemented with axonal sodium potassium and calcium channels and explored the mechanisms underlying analog modulation of the action potential-evoked transmitter release by subthreshold voltage signaling along the axons. Action potential-induced calcium entry to the terminals was reduced, while subthreshold depolarization itself caused small calcium entry.
1 . Kamiya H (2022) Modeling analysis of subthreshold voltage signaling along hippocampal mossy fiber axons Front Cell Neurosci
Model Information (Click on a link to find other models with that property)
Model Type: Axon;
Brain Region(s)/Organism: Hippocampus;
Cell Type(s): Dentate gyrus granule GLU cell;
Channel(s): I Calcium; I Sodium; I K;
Gap Junctions:
Receptor(s): AMPA; GabaA;
Transmitter(s): Glutamate; Gaba;
Simulation Environment: NEURON;
Model Concept(s): Action Potentials; Axonal Action Potentials; Analog coding; Subthreshold signaling;
Implementer(s): Kamiya, Haruyuki [kamiya at];
Search NeuronDB for information about:  Dentate gyrus granule GLU cell; GabaA; AMPA; I K; I Sodium; I Calcium; Gaba; Glutamate;
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