The Effect of the Subthreshold Oscillation Induced by the Neurons' Resonance Upon the Electrical Stimulation-dependent Instability
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Repetitive electrical nerve stimulation can induce a long-lasting perturbation of the axon's membrane potential, resulting in unstable stimulus-response relationships. Despite being observed in electrophysiology, the precise mechanism underlying electrical stimulation-dependent (ES-dependent) instability is still an open question. This study proposes a model to reveal a facet of this problem: how threshold fluctuation affects electrical nerve stimulations. This study proposes a new method based on a Circuit-Probability theory (C-P theory) to reveal the interlinkages between the subthreshold oscillation induced by neurons' resonance and ES-dependent instability of neural response. Supported by studies, this new model predicts several key characteristics of ES-dependent instability and proposes a stimulation method to minimize the instability. This model provides a powerful tool to improve our understanding of the interaction between the external electric field and the complexity of the biophysical characteristics of axons.
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Ershad F, Rao Z, Maharajan S, Mesquita F, Ha J, Gonzalez L Sci Adv. 2025; 11(4):eadt7210.
PMID: 39854455 PMC: 11759005. DOI: 10.1126/sciadv.adt7210.