Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 14 of 14 for “"Central pattern generators"”.
-
Modeling central pattern generators in sand crabs
… general approaches are taken here to model the central pattern generators (CP Gs) that coordinate each appendage, and these CPG models are coupled together in order to describe the full network. First, CPGs comprise cells, or small groups of cells described by Morris-Lecar equations. Simply …
-
Design of flexible actuators using electro-active polymers and CPG-based control strategies
… analyzed. Further, mathematical modelling for Central Pattern Generators (CPGs) is presented. The condition for phase synchronization of coupled single chain oscil-lators is derived and various techniques for pattern generation using oscillator network are studied. Finally, octopus based …
-
Organization of brain and spinal cord locomotor networks in larval lamprey
… brain locomotor command systems activate spinal central pattern generators (CPGs) to initiate locomotor behavior. The size and pharmacology of brain command systems are unknown, and the movements that result from these command systems have not been investigated. In addition, it is uncertain …
-
Analysis of the swimming-to-crawling transition of Caenorhabditis elegans in viscous fluid
… be controlled by two separate neural circuits of central pattern generators. Here we studied the locomotion of young adult C. elegans in viscous fluids ranging from 0.001-1000 Pa s to determine whether there is a sharp or continuous transition between swimming and crawling. We characterized the …
-
Centrinių sekų generatorių algoritmų grįstų roboto judesių gerinimas /
… of robotics and Nature working together is central pattern generators – neural circuits found inside animals that are responsible for generating rhythmic, repetitive signals without the interference from a higher level control system. The central pattern generator algorithm was adapted for …
-
Modulation of corticospinal excitability during arm cycling in humans
Animal studies have shown that the basic pattern for locomotor activities are generated via neural networks found in the spinal cord, referred to as central pattern generators (CPGs) (Grillner, 1981). In humans, accumulating research evidence suggests that primates, including man, have a similar …
-
Genetically evolved dynamic control for quadruped walking
… through the use of genetically evolved central pattern generators. This strategy is tested both in simulation and on a walking robot. The design of the walker has been chosen to be statically unstable, so that during motion less than three supporting feet may be in contact with the …
-
RoboBat: dynamics and control of flapping flight micro aerial vehicles
… between coupled nonlinear oscillators called central pattern generators (CPGs). A dynamic model for the robotic bat based on the complex wing kinematics is presented, and the wing kinematic motions themselves are analyzed using a high-speed motion capture system. Mechanical coupling effects …
-
Using evolutionary artificial neural networks to design hierarchical animat nervous systems.
… motors). The action layer performed the task of Central Pattern Generators (CPG), which produce rhythmic patterns of activity. In particular, different biped and quadruped gait patterns were created. An original neural model was specifically developed for assisting in the creation of these …
-
Neuroinspired control strategies with applications to flapping flight
… for analysis and design. First, we consider central pattern generators (CPGs) to control flapping-flight dynamics. The key idea here is dimensional reduction - we want to convert complicated interactions of many degrees of freedom into a handful of parameters which have intuitive connections …
-
A mathematical and computational exploration of the effect of the A-current in determining the activity phase of follower neurons
Bursting oscillations are prevalent in neurons of central pattern generators (CPGs) that produce rhythmic motor activity, and the activity phase plays an important role in determining the normal or dysfunctional network output. The activity phase is the delay time-with respect to some reference …
-
Determining how stable network oscillations arise from neuronal and synaptic mechanisms
… behaviors involve the generation of rhythmic patterns and movements. These rhythmic patterns are commonly mediated by neural networks that produce an oscillatory activity pattern, where different neurons maintain a relative phase relationship. This thesis examines the relationships between the …
-
Modeling temporal coordination in speech production using an artificial central pattern generator neural network
… and more recently, some suprasegmental timing patterns. This dissertation explores how different levels of phonological organization (the gesture, syllable, stress group, and phrase) are coordinated in speech production by measuring the effects of that coordination on acoustic and behavioral …
-
Control of neuronal circuits: from biology to robotics
… is aligned with neuromodulation, which is central to the adaptation and robustness of animal nervous systems. We illustrate the potential of the event-based neuromorphic approach on the simple mechanical model of a pendulum. In addition to the pendulum controller, we also propose a …