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Updated: Aug 12, 2025
10:40
High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy
Published on: June 28, 2016
7.6K
Double resonance induced by group coupling with quenched disorder
Cong Liu1, Zhi-Xi Wu1, Chong-Yang Wang2
1Lanzhou Center for Theoretical Physics and Key Laboratory of Theoretical Physics of Gansu Province, Lanzhou University, Lanzhou, Gansu 730000, China.
Chaos (Woodbury, N.Y.)
|February 1, 2023
Summary
Astrocytes actively regulate neural networks by influencing neuronal communication through heterogeneous couplings. This study reveals a novel double resonance phenomenon in neuron-astrocyte systems, enhancing signal response.
Area of Science:
- Neuroscience
- Computational Neuroscience
- Astrophysics
Background:
- Astrocytes play a crucial role in modulating neuronal activity and network dynamics.
- Understanding the impact of astrocyte heterogeneity on neural signal processing is essential.
Purpose of the Study:
- To investigate the regulatory role of astrocytes in neural signal response.
- To explore the effect of heterogeneous couplings in neuron-astrocyte interactions.
Main Methods:
- Utilized reduced dynamics models, including globally coupled overdamped bistable oscillators and the FitzHugh-Nagumo (FHN) neuron model.
- Employed numerical simulations and analytical techniques, including bifurcation analysis.
Main Results:
- Demonstrated two types of bell-shaped collective response curves, termed double resonance, as ensemble coupling strength or heterogeneity increased.
- Identified that resonant signal responses arise from the interplay between dispersion (heterogeneous coupling) and aggregation (positive pairwise coupling).
Conclusions:
- Astrocytes' regulatory capacity and heterogeneous couplings significantly influence signal propagation in neural networks.
- The findings offer new insights into signal processing in coupled systems with quenched disorder, highlighting a novel double resonance mechanism.
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