Periodic solutions to a mean-field model for electrocortical activity
@article{Veen2014PeriodicST, title={Periodic solutions to a mean-field model for electrocortical activity}, author={Lennaert van Veen and Kevin R. Green}, journal={The European Physical Journal Special Topics}, year={2014}, volume={223}, pages={2979-2988} }
We consider a continuum model of electrical signals in the human cortex, which takes the form of a system of semilinear, hyperbolic partial differential equations for the inhibitory and excitatory membrane potentials and the synaptic inputs. The coupling of these components is represented by sigmoidal and quadratic nonlinearities. We consider these equations on a square domain with periodic boundary conditions, in the vicinity of the primary transition from a stable equilibrium to time-periodic…
4 Citations
Transient neocortical gamma oscillations induced by neuronal response modulation
- BiologyJournal of Computational Neuroscience
- 2020
A mean field model of spatio-temporal electroencephalographic activity in the neocortex is used to computationally study the emergence of neocortical gamma oscillations as a result of neuronal response modulation and it is shown that Gamma oscillations emerge robustly in the solutions of the model and transition to beta oscillations through coordinated modulation of the responsiveness of inhibitory and excitatory neuronal populations.
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- BiologySymmetry
- 2018
It is shown that α oscillations in the solutions of the model appear globally across the neocortex, whereas γ oscillations can emerge locally as a result of a bifurcation in the dynamics of themodel.
On the Global Dynamics of an Electroencephalographic Mean Field Model of the Neocortex
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- 2017
Existence, uniqueness, and regularity of weak and strong solutions of the model are established in appropriate function spaces, and the associated initial-boundary value problems are proved to be well-posed.
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