Synchrony-induced modes of oscillation of a neural field model
We investigate the modes of oscillation of heterogeneous ring-networks of quadratic integrate-and-fire (QIF) neurons with non-local, space-dependent coupling. Perturbations of the equilibrium state with a particular wave number produce transient standing waves with a specific temporal frequency, ana...
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| Format: | Article |
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American Physical Society
2017
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| Online Access: | https://eprints.nottingham.ac.uk/47803/ |
| _version_ | 1848797633009680384 |
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| author | Esnaola-Acebes, Jose M. Roxin, Alex Avitabile, Daniele Montbrio, Ernest |
| author_facet | Esnaola-Acebes, Jose M. Roxin, Alex Avitabile, Daniele Montbrio, Ernest |
| author_sort | Esnaola-Acebes, Jose M. |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | We investigate the modes of oscillation of heterogeneous ring-networks of quadratic integrate-and-fire (QIF) neurons with non-local, space-dependent coupling. Perturbations of the equilibrium state with a particular wave number produce transient standing waves with a specific temporal frequency, analogous to those in a tense string. In the neuronal network, the equilibrium corresponds to a spatially homogeneous, asynchronous state. Perturbations of this state excite the network’s oscillatory modes, which reflect the interplay of episodes of synchronous spiking with the excitatory-inhibitory spatial interactions. In the thermodynamic limit, an exact low-dimensional neural field model (QIF-NFM) describing the macroscopic dynamics of the network is derived. This allows us to obtain formulas for the Turing eigenvalues of the spatially-homogeneous state, and hence to obtain its stability boundary. We find that the frequency of each Turing mode depends on the corresponding Fourier coefficient of the synaptic pattern of connectivity. The decay rate instead, is identical for all oscillation modes as a consequence of the heterogeneity-induced desynchronization of the neurons. Finally, we numerically compute the spectrum of spatially-inhomogeneous solutions branching from the Turing bifurcation, showing that similar oscillatory modes operate in neural bump states, and are maintained away from onset. |
| first_indexed | 2025-11-14T20:06:58Z |
| format | Article |
| id | nottingham-47803 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T20:06:58Z |
| publishDate | 2017 |
| publisher | American Physical Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-478032020-05-04T19:17:26Z https://eprints.nottingham.ac.uk/47803/ Synchrony-induced modes of oscillation of a neural field model Esnaola-Acebes, Jose M. Roxin, Alex Avitabile, Daniele Montbrio, Ernest We investigate the modes of oscillation of heterogeneous ring-networks of quadratic integrate-and-fire (QIF) neurons with non-local, space-dependent coupling. Perturbations of the equilibrium state with a particular wave number produce transient standing waves with a specific temporal frequency, analogous to those in a tense string. In the neuronal network, the equilibrium corresponds to a spatially homogeneous, asynchronous state. Perturbations of this state excite the network’s oscillatory modes, which reflect the interplay of episodes of synchronous spiking with the excitatory-inhibitory spatial interactions. In the thermodynamic limit, an exact low-dimensional neural field model (QIF-NFM) describing the macroscopic dynamics of the network is derived. This allows us to obtain formulas for the Turing eigenvalues of the spatially-homogeneous state, and hence to obtain its stability boundary. We find that the frequency of each Turing mode depends on the corresponding Fourier coefficient of the synaptic pattern of connectivity. The decay rate instead, is identical for all oscillation modes as a consequence of the heterogeneity-induced desynchronization of the neurons. Finally, we numerically compute the spectrum of spatially-inhomogeneous solutions branching from the Turing bifurcation, showing that similar oscillatory modes operate in neural bump states, and are maintained away from onset. American Physical Society 2017-11-13 Article PeerReviewed Esnaola-Acebes, Jose M., Roxin, Alex, Avitabile, Daniele and Montbrio, Ernest (2017) Synchrony-induced modes of oscillation of a neural field model. Physical Review E, 96 (5). 052407/1-052407/12. ISSN 1550-2376 https://journals.aps.org/pre/abstract/10.1103/PhysRevE.96.052407 doi:10.1103/PhysRevE.96.052407 doi:10.1103/PhysRevE.96.052407 |
| spellingShingle | Esnaola-Acebes, Jose M. Roxin, Alex Avitabile, Daniele Montbrio, Ernest Synchrony-induced modes of oscillation of a neural field model |
| title | Synchrony-induced modes of oscillation of a neural field model |
| title_full | Synchrony-induced modes of oscillation of a neural field model |
| title_fullStr | Synchrony-induced modes of oscillation of a neural field model |
| title_full_unstemmed | Synchrony-induced modes of oscillation of a neural field model |
| title_short | Synchrony-induced modes of oscillation of a neural field model |
| title_sort | synchrony-induced modes of oscillation of a neural field model |
| url | https://eprints.nottingham.ac.uk/47803/ https://eprints.nottingham.ac.uk/47803/ https://eprints.nottingham.ac.uk/47803/ |