Sökning: "microneurography"

Visar resultat 1 - 5 av 12 avhandlingar innehållade ordet microneurography.

  1. 1. Studies of sympathetic nerve activity in cutaneous nerves in healthy subjects using intraneural microneurography : The relationship between nerve activity and effector organ response

    Författare :Pirkko Hynninen; Anna Rostedt Punga; Roland Flink; Kristin Ørstavik; Uppsala universitet; []
    Nyckelord :Human; microneurography; neurophysiology; sympathetic nerve activity;

    Sammanfattning : The aim of the research presented in this thesis is to gain new knowledge of the characteristic features of sympathetic nerve activity of cutaneous nerves in healthy adult humans using intraneural microneurography. One further goal is to study the relationship between nerve activity and effector organ response. LÄS MER

  3. 2. Physiological properties of unmyelinated low-threshold tactile (CT) afferents in the human hairy skin

    Författare :Katarina Wiklund Fernström; Göteborgs universitet; []
    Nyckelord :Human; microneurography; mechanoafferent; unmyelinated; sensory; touch; temperature; capsaicin;

    Sammanfattning : For more than a decade it has been known that human skin is supplied with a system of slowly conducting unmyelinated afferents that respond strongly to innocuous skin deformation (Nordin, 1990; Vallbo et al., 1993). LÄS MER

  4. 3. Classification of muscle stretch receptor afferents in humans

    Författare :Benoni B. Edin; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Muscle spindles; Golgi tendon organs; Classification of muscle receptors; Microneurography; Human hand; Stretch sensitization; Voluntary contraction; Static position sensitivity; Fusimotor control;

    Sammanfattning : The response patterns of human stretch receptors in the finger extensor muscles of the forearm were studied using the microneurography technique. Single-unit recordings were obtained from one-hundred and twenty-four afferents. LÄS MER

  5. 4. A pathway for pleasant touch: linking peripheral receptors to central processing and hedonic experience

    Författare :Line Sofie Löken; Göteborgs universitet; []
    Nyckelord :pleasant; touch; microneurography; human; CT afferent; unmyelinated;

    Sammanfattning : This thesis investigates the mechanisms underpinning pleasant touch, describes a pathway from peripheral nerve endings in the skin to the insular cortex, and relates these findings to the subjective hedonic experience of touch. In Paper I, the relationship between primary afferent encoding and perception of pleasantness was investigated by combining microneurography recordings from human mechanoreceptors with psychophysical measurements during soft brush stroking at 6 different velocities between 0. LÄS MER

  7. 5. A Signal Processing Approach to Practical Neurophysiology : A Search for Improved Methods in Clinical Routine and Research

    Författare :Björn Hammarberg; Dick Stegeman; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Systemteknik; matched filter; asynchronous detection; Kalman filter; initialization; MHT; Wiener deconvolution; line source model; electromyography; needle EMG; motor unit potential; MUAP; mean fiber concentration; jitter; microneurography; C-fiber; spike sorting; Systemteknik; Systems engineering; Systemteknik; Signal Processing; signalbehandling;

    Sammanfattning : Signal processing within the neurophysiological field is challenging and requires short processing time and reliable results. In this thesis, three main problems are considered.First, a modified line source model for simulation of muscle action potentials (APs) is presented. LÄS MER