Search for dissertations about: "central pattern generator"

Showing result 11 - 15 of 17 swedish dissertations containing the words central pattern generator.

2. 11. Dopaminergic and serotonergic modulation of cellular and locomotor network properties in the lamprey spinal cord

   Author : Martin Wikström; Karolinska Institutet; Karolinska Institutet; []
   Keywords : 5-hydroxytryptamine; Dopamine; Calcium channels; Calcium-dependent potassium channels; Afterhyperpolarization; Membrane potential oscillation; Synaptic transmission; Modulation; Central pattern generator; Locomotion; Spinal cord; Lamprey;

   Abstract : Motor activity is the basis for all behavior. It is therefore important to study the processes generating movement such as the neuronal networks in the spinal cord that generates and controls locomotion. The lamprey is used as a model system for the study of locomotion. READ MORE

4. 12. Ion channels and intrinsic membrane properties of locomotor network neurons in the lamprey spinal cord

   Author : Di Wang; Karolinska Institutet; Karolinska Institutet; []
   Keywords : Ion channels; calcium activated non-selective cation current ICAN ; L-type LVA calcium channels Cav 1.3 ; calcium channels; calcium imaging; NMDA; postinhibitory rebound PIR ; lamprey; central pattern generator CPG ; locomotion;

   Abstract : NMDA-receptor dependent membrane potential oscillations and postinhibitory rebound are examples of intrinsic membrane properties of many neurons of rhythm-generating networks, and are considered to play major roles in the operation of the spinal locomotor network of the lamprey vertebrate model. A significant feature of many lamprey spinal cord neurons is their ability to generate pacemaker-like membrane potential oscillations in the presence of the glutamate agonist NMDA. READ MORE

5. 13. Swimming with the current : Fictive locomotion reveals subtle phenotypes in the zebrafish locomotor network

   Author : Harmen Kornelis Koning; Henrik Boije; David McLean; Uppsala universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; dmrt3a; wt1a; spinal cord; Mauthner cell; neural development; locomotor network; zebrafish;

   Abstract : Neural networks are the functional building blocks of the central nervous system. To better understand how these networks develop and operate, we turned to the zebrafish locomotor network, with a focus on subtypes of interneurons expressing dmrt3a and wt1a. READ MORE

6. 14. Generation and Optimization of Motor Behaviors in Real and Simulated Robots

   Author : Krister Wolff; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; behavior-based robotics; bipedal robots; behavior selection; evolutionary robotics; linear genetic programming; autonomous robots;

   Abstract : In this thesis, the problems of generating and optimizing motor behaviors for both simulated and real, physical robots have been investigated, using the paradigms of evolutionary robotics and behavior-based robotics. Specifically, three main topics have been considered: (1) On-line evolutionary optimization of hand-coded gaits for real, physical bipedal robots. READ MORE

7. 15. Spinal Control of Locomotion : Developmental and Functional Aspects

   Author : Nadine Rabe; Klas Kullander; Artur Kania; Uppsala universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; neuronal network; commissural interneuron; developmental interneuron subtypes; V3; mouse genetics; Pitx2; axon guidance; netrin-1; DCC; EphA4; Neuroscience; Neurovetenskap; Neuroscience; Neurovetenskap; Medicinsk utvecklings- och neurobiologi; Developmental Neurosciences; Molekylär genetik; Molecular Genetics;

   Abstract : Neuronal networks are the central functional units of the nervous system. Knowledge about the identity of participating neurons and the assembly of these during development is crucial for the understanding of CNS function. READ MORE