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Lévy noise improves the electrical activity in a neuron under electromagnetic radiation
Juan Wu1,2,3,4, Yong Xu1,2,3,4, Jun Ma5
1Department of Applied Mathematics, Northwestern Polytechnical University, Xi'an, China.
Plos One
|March 31, 2017
Summary
External electromagnetic radiation, modeled as Lévy noise, influences neuron electrical activity. Increased Lévy noise intensity enhances neuron firing and induces transitions between different activity modes, including chaotic states.
Area of Science:
- Neuroscience
- Computational Biology
- Physics
Background:
- Nervous system bioelectricity exhibits complex, non-Gaussian fluctuations.
- External electromagnetic radiation can be modeled using Lévy noise distributions.
- Understanding these interactions is crucial for neuroscience and bioelectricity research.
Purpose of the Study:
- To investigate neuron electrical activities under external electromagnetic radiation modeled by Lévy noise.
- To analyze the impact of Lévy noise on neuron firing patterns and states.
- To identify parameter regions for chaotic electrical activity in neurons.
Main Methods:
- Utilized an improved Hindmarsh-Rose model for neuron simulation.
- Introduced Lévy noise to simulate external electromagnetic radiation effects.
- Analyzed stationary probability distribution functions and Lyapunov exponents.
Main Results:
- Observed mode transitions in electrical activity (rest to firing, spiking variations, spiking to bursting).
- Demonstrated that increased Lévy noise intensity enhances neuron firing.
- Identified parameter regions exhibiting chaotic electrical activity via Lyapunov exponents.
Conclusions:
- Lévy noise-driven electromagnetic radiation significantly alters neuron electrical activity modes.
- Neuron firing rate is positively correlated with Lévy noise intensity.
- The study provides insights into noise-induced dynamics and chaos in neuronal systems.