Sökning: "EMG"

Visar resultat 26 - 30 av 136 avhandlingar innehållade ordet EMG.

1. 26. Work-related musculoskeletal disorders - exposure assessment and gender aspects

   Författare :Catarina Nordander; Avdelningen för arbets- och miljömedicin; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Skelett; Occupational health; Yrkesmedicin; industrial medicine; arbetsmiljömedicin; reumatologi; muskelsystem; rheumatology locomotion; muscle system; Skeleton; repetitive work; sex; occupational; myalgia; Surface EMG; muscular activity;

   Sammanfattning : Work-related musculoskeletal disorders are widespread, and are, for unclear reasons, more common among females than in males. Several risk factors have been described; constrained and awkward postures, repetitive and/or force demanding motions, and lack of recovery. LÄS MER

3. 27. 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. 28. 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. 29. Motion Analysis and Postural Stability of Transtibial Prosthesis Users

   Författare :David Rusaw; Göteborgs universitet; []
   Nyckelord :Artificial limb; balance; electromyography EMG ; motion analysis; postural stability;

   Sammanfattning : The AIMS of the thesis were to critically evaluate motion analysis methods used during investigations of transtibial prosthesis users, and to propose improvements to these methods. Additionally, the aim was to evaluate if vibratory feedback could be used to improve postural stability in transtibial prosthesis users and how being a prosthesis user influenced muscular response to postural perturbations. LÄS MER

7. 30. Rapid Facial Reactions to Emotionally Relevant Stimuli

   Författare :Monika Thunberg; Ulf Dimberg; Mats Fredrikson; Georg Stenberg; Uppsala universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Emotion; facial EMG; facial reactions; facial expressions; rapid responses; automatic responses; phobia; social fear; speech anxiety; Psychology; Psykologi;

   Sammanfattning : The present thesis investigated the relationship between rapid facial muscle reactions and emotionally relevant stimuli. In Study I, it was demonstrated that angry faces elicit increased Corrugator supercilii activity, whereas happy faces elicit increased Zygomaticus major activity, as early as within the first second after stimulus onset. LÄS MER