21 papers · ranked by Valyu relevance
Takeaki Yajima
Research on various neuro-inspired technologies has received much attention. However, while higher-order neural functions such as recognition have been emphasized, the fundamental properties of neural circuits as advanced control systems have not been fully exploited. Here, we applied the functions of central pattern…
Primoz Ravbar, Neil Zhang, Julie H Simpson, K VijayRaghavan + 1 more
'K VijayRaghavan'] Central pattern generators (CPGs) are neurons or neural circuits that produce periodic output without requiring patterned input. More complex behaviors can be assembled from simpler subroutines, and nested CPGs have been proposed to coordinate their repetitive elements, organizing control over…
Sarah M. Pugliese, Grant M. Chou, Elliott T.T. Abe, Denis Turcu + 3 more
Animal locomotion relies on rhythmic body movements driven by central pattern generators (CPGs): neural circuits that produce oscillating output without oscillating input. However, the circuit structure of a CPG for walking is not known in any animal. To identify the cells and synapses that underlie rhythmic leg…
Yuriy Pryyma, Sergiy Yakovenko
Complex biological systems evolved to control dynamics in the presence of noisy and often unpredictable inputs. The staple example is locomotor control, which is vital for survival. Control of locomotion results from interactions between multiple systems--from passive dynamics of inverted pendulum governing body motion…
Tham Yik Foong, Danilo Vasconcellos Vargas
This paper presents a method for reproducing a simple central pattern generator (CPG) using a modified Echo State Network (ESN). Conventionally, the dynamical reservoir needs to be damped to stabilize and preserve memory. However, we find that a reservoir that develops oscillatory activity without any external…
Pablo López-Osorio, Alberto Saucedo, Juan P. Dominguez‐Morales, Horacio Rostro‐González + 1 more
'Horacio Rostro‐González' 'Fernando Perez‐Peña'] In recent years, locomotion mechanisms exhibited by vertebrate animals have been the inspiration for the improvement in the performance of robotic systems. These mechanisms include the adaptability of their locomotion to any change registered in the environment through…
Jonas M. D. Enander, Adam M. Jones, Matthieu Kirkland, Jordan Hurless + 2 more
'Jordan Hurless' 'Henrik Jörntell' 'Gerald E. Loeb'] INTRODUCTION Motor commands from the brain are processed through the neuronal circuitry of the spinal cord, where they are integrated with sensory signals before producing output in Sherrington’s final common pathway of the motoneuron (MN) (1). Because the sensory…
Zhuangyu Han, Abhronil Sengupta
—Neuromorphic computing systems, where information is transmitted through action potentials in a bio-plausible fashion, is gaining increasing interest due to its promise of low-power event-driven computing. Application of neuromorphic computing in robotic locomotion research have largely focused on Central Pattern…
Norihisa Namura, Hiroya Nakao
Transitions in Hexapod Robots based on Phase Reduction Authors: ['Norihisa Namura' 'Hiroya Nakao'] We present a model of the central pattern generator (CPG) network that can control gait transitions in hexapod robots in a simple manner based on phase reduction. The CPG network consists of six weakly coupled limit-cycle…
Milad Shafiee, Guillaume Bellegarda, Auke Jan Ijspeert
— Quadruped animal locomotion emerges from the interactions between the spinal central pattern generator (CPG), sensory feedback, and supraspinal drive signals from the brain. Computational models of CPGs have been widely used for investigating the spinal cord contribution to animal locomotion control in computational…
Qiyue Yang, Yue Gao, Shaoyuan Li
—Inspired by biological motion generation, central pattern generators (CPGs) is frequently employed in legged robot locomotion control to produce natural gait pattern with lowdimensional control signals. However, the limited adaptability and stability over complex terrains hinder its application. To address this issue…
Qiang Zhang, Yi Cheng, Mei Zhou, Yue Dai
Locomotion is a fundamental movement in vertebrates produced by spinal networks known as central pattern generators (CPG). During fictive locomotion cat lumbar motoneurons (MNs) exhibit changes in membrane properties, including hyperpolarization of voltage threshold, reduction of afterhyperpolarization and input…
Kotaro Muramatsu, Hiroshi Kori
both oscillatory and convergent neuronal activities Authors: ['Kotaro Muramatsu' 'Hiroshi Kori'] The neural oscillator model proposed by Matsuoka is a piecewise affine system, which exhibits distinctive periodic solutions. Although such typical oscillation patterns have been widely studied, little is understood about…
Simon Gosgnach
In the past two decades we have learned an enormous amount of information regarding the identity of functional components of the neural circuitry responsible for generating locomotor activity in mammals. Molecular techniques, combined with classic electrophysiological and anatomical approaches, have resulted in the…
Andrea Di Russo, Dimitar Stanev, Anushree Sabnis, Simon M. Danner + 3 more
Studying the neural components regulating movement in human locomotion is obstructed by the inability to perform invasive experimental recording. Neuromechanical simulations can provide insights by modeling the locomotor circuits. Past neuromechanical models proposed control of locomotion either driven by central…
Savanna-Rae H Fahoum, Dawn M Blitz
Network flexibility is important for adaptable behaviors. This includes neuronal switching, where neurons alter their network participation, including changing from single-to dual-network activity. Understanding the implications of neuronal switching requires determining how a switching neuron interacts with each of…
Eric A. Kirk, Kangjia Cai, Britton A. Sauerbrei
Motor cortex is the principal driver of discrete, voluntary movements like reaching. Correspondingly, current theories describe muscle activity as a function of cortical dynamics. Tasks like speech and locomotion, however, require the integration of voluntary commands with ongoing movements orchestrated by largely…
Michelle Christine Larbi, Giulia Messa, Helin Jalal, Stella Koutsikou
Vertebrate locomotion is heavily dependent on descending control originating in the midbrain and subsequently influencing central pattern generators in the spinal cord. However, the midbrain neuronal circuitry and its connections with other brainstem and spinal motor circuits has not been fully elucidated. Basal…
Mufaddal I. Baghdadwala, Marina R. Sartori, Richard. J. A. Wilson
Breathing begins at birth and continues to death, providing a unique system to understand the architecture of rhythm-generating circuits in vertebrates. In mammals and frogs, three discrete rhythmogenic brainstem nuclei appear essential for generating different phases of breathing, with individual neurons intrinsically…
Kianoush Missaghi, Jean-Patrick Le Gal, Julien Mercier, Martin Grover + 5 more
'Martin Grover' 'Philippe-Antoine Beauséjour' 'Shannon Chartré' 'Omima Messihad' 'François Auclair' 'Réjean Dubuc'] In lampreys, respiration consists of a fast and a slow rhythm. This study was aimed at characterizing both anatomically and physiologically the brainstem regions involved in generating the two rhythms.…
Brendan D. McKay, Mehmet Aziz Yirik, Christoph Steinbeck
Chemical structure generators are used in cheminformatics to produce or enumerate virtual molecules based on a set of boundary conditions. The result can then be tested for properties of interest, such as adherence to measured data or for their suitability as drugs. The starting point can be a potentially fuzzy set of…