This title appears in the Scientific Report :
2021
Please use the identifier:
http://dx.doi.org/10.3389/fphys.2021.716556 in citations.
Please use the identifier: http://hdl.handle.net/2128/29544 in citations.
Long-Term Desynchronization by Coordinated Reset Stimulation in a Neural Network Model With Synaptic and Structural Plasticity
Long-Term Desynchronization by Coordinated Reset Stimulation in a Neural Network Model With Synaptic and Structural Plasticity
Several brain disorders are characterized by abnormal neuronal synchronization. To specifically counteract abnormal neuronal synchrony and, hence, related symptoms, coordinated reset (CR) stimulation was computationally developed. In principle, successive epochs of synchronizing and desynchronizing...
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Personal Name(s): | Manos, Thanos (Corresponding author) |
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Diaz, Sandra (Corresponding author) / Tass, Peter A. | |
Contributing Institute: |
Jülich Supercomputing Center; JSC |
Published in: | Frontiers in physiology, 12 (2021) S. 716556 |
Imprint: |
Lausanne
Frontiers Research Foundation
2021
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DOI: |
10.3389/fphys.2021.716556 |
Document Type: |
Journal Article |
Research Program: |
Brain-Scale Simulations JL SMHB - Joint Lab Supercomputing and Modeling for the Human Brain (JL SMHB-2021-2027) Human Brain Project Specific Grant Agreement 2 SimLab Neuroscience Domain-Specific Simulation & Data Life Cycle Labs (SDLs) and Research Groups Doktorand ohne besondere Förderung |
Link: |
OpenAccess Get full text |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/29544 in citations.
Several brain disorders are characterized by abnormal neuronal synchronization. To specifically counteract abnormal neuronal synchrony and, hence, related symptoms, coordinated reset (CR) stimulation was computationally developed. In principle, successive epochs of synchronizing and desynchronizing stimulation may reversibly move neural networks with plastic synapses back and forth between stable regimes with synchronized and desynchronized firing. Computationally derived predictions have been verified in pre-clinical and clinical studies, paving the way for novel therapies. However, as yet, computational models were not able to reproduce the clinically observed increase of desynchronizing effects of regularly administered CR stimulation intermingled by long stimulation-free epochs. We show that this clinically important phenomenon can be computationally reproduced by taking into account structural plasticity (SP), a mechanism that deletes or generates synapses in order to homeostatically adapt the firing rates of neurons to a set point-like target firing rate in the course of days to months. If we assume that CR stimulation favorably reduces the target firing rate of SP, the desynchronizing effects of CR stimulation increase after long stimulation-free epochs, in accordance with clinically observed phenomena. Our study highlights the pivotal role of stimulation- and dosing-induced modulation of homeostatic set points in therapeutic processes. |