Sökning: "Reticulospinal Neurons"

Visar resultat 6 - 10 av 14 avhandlingar innehållade orden Reticulospinal Neurons.

  1. 6. Modulatory effects and interactions of substance P, dopamine and 5-HT in a neuronal network

    Författare :Erik Svensson; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Lamprey; spinal cord; neuromodulation; substance P; 5-HT; dopamine;

    Sammanfattning : The spinal neuronal network that generates the locomotor rhythm in lamprey contains excitatory and inhibitory interneurons, reticulospinal inputs from the brainstem, and motor neurons. In this thesis, I have studied how the spinal locomotor network cart be modulated by a tachykinin, dopamine and 5- HT that are co-localized in midline neurons situated below the central canal. LÄS MER

  3. 7. Vestibular control of body orientation in lamprey

    Författare :Elena Pavlova; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Postural control; orientation; vision; vestibular system; visuo-vestibular interaction; vestibular compensation; locomotion; supraspinal control; lamprey;

    Sammanfattning : Maintenance of body orientation (postural control) is a vital motor function of the brain. The general goal of this project was to understand the organization and operation of neuronal networks responsible for postural control. The lamprey (a lower vertebrate) was used as a model animal. LÄS MER

  4. 8. Neural mechanisms for the visual control of spatial orientation and locomotion : electrophysiological and behavioural studies of the supraspinal control of posture and steering in the lamprey central nervous system, with reference to visuo-motor mechanisms

    Författare :Fredrik Ullén; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Neural mechanisms for the supraspinal control of posture and steering, in particular visuo-motor control and visuo-vestibular interaction in postural control, were investigated, using the lamprey as a model system. Behavioural experiments on intact and chronically lesioned animals, intra- and extracellular recordings in vitro and retrograde staining of neurons with horseradish peroxidase were utilized. LÄS MER

  5. 9. On the role of metabotropic glutamate receptors in motor control : analysis of synaptic, cellular and network properties

    Författare :Patrik Krieger; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :calcium channels; lamprey; locomotion; metabotropic glutamate receptors; neuronal network; spinal cord; synaptic transmission;

    Sammanfattning : The organization of neurons into neuronal networks is a basic feature of the central nervous system. An understanding of the function of neuronal networks requires knowledge on both synaptic connectivity and cellular properties. LÄS MER

  7. 10. Mechanisms of rhythm generation in the lamprey locomotor network

    Författare :Lorenzo Cangiano; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Animals propel themselves through space, swimming, walking or flying, by rhythmic oscillatory movements of their body and limbs. In vertebrates these movements are mainly generated by specialized neuronal circuits in the spinal cord, called central pattern generators (CPGs) for locomotion. LÄS MER