Frequency cluster formation and slow oscillations in neural populations with plasticity

Author(s)

Roehr, Vera ^[1] ; Berner, Rico ^{[2, 3]} ; Lameu, Ewandson L. ^{[4, 5]} ; Popovych, V, Oleksandr ; Yanchuk, Serhiy ^[2]

Affiliation

^[1] Tech Univ Berlin, Neurotechnol Grp, Berlin - Germany

^[2] Tech Univ Berlin, Inst Math, Berlin - Germany

^[3] Tech Univ Berlin, Inst Theoret Phys, Berlin - Germany

^[4] Humboldt Univ, Inst Phys, Berlin - Germany

^[5] Natl Inst Space Res INPE, Sao Jose Dos Campos, SP - Brazil

• Document type: Journal article
• Source: PLoS One; v. 14, n. 11 NOV 14 2019.
• Web of Science Citations: 0

Abstract

We report the phenomenon of frequency clustering in a network of Hodgkin-Huxley neurons with spike timing-dependent plasticity. The clustering leads to a splitting of a neural population into a few groups synchronized at different frequencies. In this regime, the amplitude of the mean field undergoes low-frequency modulations, which may contribute to the mechanism of the emergence of slow oscillations of neural activity observed in spectral power of local field potentials or electroencephalographic signals at high frequencies. In addition to numerical simulations of such multi-clusters, we investigate the mechanisms of the observed phenomena using the simplest case of two clusters. In particular, we propose a phenomenological model which describes the dynamics of two clusters taking into account the adaptation of coupling weights. We also determine the set of plasticity functions (update rules), which lead to multi-clustering. (AU)

• FAPESP's process: 16/23398-8 - Synaptic plasticity in neuronal networks with time delay
• Grantee: Ewandson Luiz Lameu
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 17/13502-5 - Synchronisation in time-delayed networks with synaptic plasticity
• Grantee: Ewandson Luiz Lameu
• Support Opportunities: Scholarships abroad - Research Internship - Post-doctor