Sökning: "single-fiber EMG"

Hittade 4 avhandlingar innehållade orden single-fiber EMG.

  1. 1. MuSK Antibody(+) Versus AChR Antibody(+) Myasthenia Gravis : Clinical, Neurophysiological and Morphological Aspects

    Författare :Anna Rostedt Punga; Erik Stålberg; Hannu Kalimo; John Newsom-Davis; Uppsala universitet; []
    Nyckelord :Neurosciences; myasthenia gravis; MuSK antibody; AChR antibody; myopathy; single-fiber EMG; mitochondria; Swedish MG questionnaire; quality of life; Neurovetenskap;

    Sammanfattning : Myasthenia gravis (MG) is an autoimmune neuromuscular disorder that causes fluctuating muscle weakness. MG may be divided into an ocular form and a generalized form based on the involved muscles. Treatment differs between these different MG forms. LÄS MER

  3. 2. 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

  4. 3. Quantitative electromyographic studies of the perineal muscles in normal subjects and patients suffering from anal or urinary incontinence

    Författare :Øystein Aanestad; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Surgery; Interference pattern; quantitative EMG; perineal muscles; anal and urinary incontinence; Kirurgi; Surgery; Kirurgi; kirurgi; särskilt urologi; Urology;

    Sammanfattning : The aims of the study were to characterize the interference pattern in perineal muscles in healthy subjects with the use of quantitative EMG techniques, to evaluate if prostatic surgery had any effect on the interference pattern and furthermore to examine the interference pattern in the perineal muscles in patients suffering from urinary or anal incontinence.The interference pattern in the perineal muscles was examined with a computerized analysis, the Turns and Amplitude (T/A) analysis, and the innervation pattern of the muscles was examined with single fiber electromyography measuring the fiber density. LÄS MER

  5. 4. Effects of unloading on skeletal muscle mass and function in man

    Författare :Hans Berg; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Atrophy; bedrest; concentric and isometric and eccentric muscle actions; disuse; electromyography; fatigue; fiber types and size; humans; inactivity; maximal voluntary force; recovery; skeletal muscle cross-sectional area; strength; suspension; tomog;

    Sammanfattning : An experimental human model of skeletal muscle unloading of one lower limb and confined bedrest were employed to quantitate the adaptive responses to 10 days, 4 or 6 wk of unloading in healthy humans on quadricep skeletal muscle mass and function. Muscle cross-sectional area (CSA) was assessed using tomographic imaging (CT, MRI). LÄS MER