Controlling neocortical epileptic seizures using forced temporal spike-time stimulation: an in silico computational study

Frontiers in Computational Neuroscience

Neuroscience

Rachel V. Quinarez¹  Joseph Schmalz²  Mayuresh V. Kothare³  Gautam Kumar⁴ 

[1] Department of Aerospace Engineering, San José State University, San José, CA, United States;Department of Chemical and Biological Engineering, University of Idaho, Moscow, ID, United States;Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, PA, United States;Department of Chemical and Materials Engineering, San José State University, San José, CA, United States;

关键词: epilepsy;    FTSTS;    neocortical;    control;    excitatory;    inhibitory;    desynchronization;    spike-timing dependent plasticity;   

DOI  :  10.3389/fncom.2023.1084080

 received in 2022-10-29, accepted in 2023-06-09,  发布年份 2023

来源: Frontiers

【 摘 要 】

Epileptic seizure is typically characterized by highly synchronized episodes of neural activity. Existing stimulation therapies focus purely on suppressing the pathologically synchronized neuronal firing patterns during the ictal (seizure) period. While these strategies are effective in suppressing seizures when they occur, they fail to prevent the re-emergence of seizures once the stimulation is turned off. Previously, we developed a novel neurostimulation motif, which we refer to as “Forced Temporal Spike-Time Stimulation” (FTSTS) that has shown remarkable promise in long-lasting desynchronization of excessively synchronized neuronal firing patterns by harnessing synaptic plasticity. In this paper, we build upon this prior work by optimizing the parameters of the FTSTS protocol in order to efficiently desynchronize the pathologically synchronous neuronal firing patterns that occur during epileptic seizures using a recently published computational model of neocortical-onset seizures. We show that the FTSTS protocol applied during the ictal period can modify the excitatory-to-inhibitory synaptic weight in order to effectively desynchronize the pathological neuronal firing patterns even after the ictal period. Our investigation opens the door to a possible new neurostimulation therapy for epilepsy.

【 授权许可】

Unknown   
Copyright © 2023 Schmalz, Quinarez, Kothare and Kumar.