Sensory feedback expands dynamic complexity and aids in robustness against noise

White, Alexander James

doi:10.1007/s00422-021-00917-2

Biol Cybern

2022

DOI: 10.1007/s00422-021-00917-2

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Sensory feedback expands dynamic complexity and aids in robustness against noise

Alexander James White

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2024

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Cited by 2 publications

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The influence of synaptic strength and noise on the robustness of central pattern generator

Zhan,

Song,

Liu

2024

era

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<abstract><p>In this paper, we explore the mechanisms of central pattern generators (CPGs), circuits that can generate rhythmic patterns of motor activity without external input. We study the half-center oscillator, a simple form of CPG circuit consisting of neurons connected by reciprocally inhibitory synapses. We examine the role of asymmetric coupling factors in shaping rhythm activity and how different network topologies contribute to network efficiency. We have discovered that neurons with lower synaptic strength are more susceptible to noise that affects rhythm changes. Our research highlights the importance of asymmetric coupling factors, noise, and other synaptic parameters in shaping the broad regimes of CPG rhythm. Finally, we compare three topology types' regular regimes and provide insights on how to locate the rhythm activity.</p></abstract>

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The influence of synaptic strength and noise on the robustness of central pattern generator

Zhan,

Song,

Liu

2024

era

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Complex rhythm and synchronization of half-center oscillators under electromagnetic induction

Zhan,

Song

2024

era

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<p>Half-center oscillators are typical small circuits that are crucial for understanding CPG. The complex rhythms of CPG are closely related to certain diseases, such as epilepsy. This paper considered the influence of electromagnetic induction on the discharge mode of the half-center oscillators. First, we analyzed the response of individual firing neuron rhythms to electromagnetic induction when the slow-variable parameters vary. We also discussed the changes in the dynamic bifurcation structure when the intensity of electromagnetic induction varies. Furthermore, we determined the effects of mutually inhibitory and self-inhibitory synaptic parameters on the firing rhythm of the half-center oscillators. The different responses induced by electromagnetic induction interventions, showed that mutually inhibitory synapses modulate the firing rhythm weakly and self-inhibition synapses have a significant impact on firing rhythm. Finally, with the change of synaptic parameter values, the combined effects of autapse and mutually inhibitory synapses on the discharge rhythm of half-center oscillators were analyzed in symmetric and asymmetric autapse modes. It was found that the synchronous state of the half-center oscillators had a more robust electromagnetic induction response than the asynchronous state.</p>

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Sensory feedback expands dynamic complexity and aids in robustness against noise

Cited by 2 publications

References 16 publications

The influence of synaptic strength and noise on the robustness of central pattern generator

The influence of synaptic strength and noise on the robustness of central pattern generator

Complex rhythm and synchronization of half-center oscillators under electromagnetic induction

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