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- W2328586809 abstract "Neuronal hypersynchrony is implicated in epilepsy and other diseases. The low-frequency, spatially averaged electric fields from many thousands of neurons have been shown to promote synchrony. It remains unclear whether highly transient, spatially localized electric fields from single action potentials (ephaptic coupling) significantly affect spike timing of neighboring cells and in consequence, population synchrony. In this study, we simulated the extracellular potentials and the resulting coupling between neurons in the NEURON environment and generalized their connection rules to create an oscillator network model of a sheet of ephaptically coupled neurons. With the use of both models, we explained several aspects of epileptiform behavior not previously modeled by synaptically coupled networks. Importantly, reduction of neuron spacing induced synchronization via single-spike ephaptic coupling, agreeing with seizure suppression seen clinically and in vitro via extracellular volume adjustment. Further reduction of neuron spacing yielded locally synchronized clusters, providing a mechanism for recent in vitro observations of localized neuronal synchrony in the absence of synaptic and gap-junction coupling." @default.
- W2328586809 created "2016-06-24" @default.
- W2328586809 creator A5027981069 @default.
- W2328586809 creator A5052588728 @default.
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- W2328586809 date "2015-05-01" @default.
- W2328586809 modified "2023-09-25" @default.
- W2328586809 title "Computational study of synchrony in fields and microclusters of ephaptically coupled neurons" @default.
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- W2328586809 doi "https://doi.org/10.1152/jn.00546.2014" @default.
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