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Spatio-temporal pro...
Spatio-temporal processing of surface EMG signals from the sternocleidomastoideus muscle to assess effects of radiotherapy on motor unit conduction velocity and firing rate : a pilot study
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- Grönlund, Christer (author)
- Umeå universitet,Centrum för medicinsk teknik och fysik (CMTF),Radiofysik
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- Östlund, Nils (author)
- Umeå universitet,Centrum för medicinsk teknik och fysik (CMTF),Radiofysik
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- Lindh, Jack (author)
- Umeå universitet,Onkologi
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- Bergström, Per (author)
- Umeå universitet,Onkologi
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- Karlsson, Stefan J (author)
- Umeå universitet,Radiofysik
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(creator_code:org_t)
- Elsevier, 2008
- 2008
- English.
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In: Biomedical Signal Processing and Control. - : Elsevier. - 1746-8094. ; 3:2, s. 163-168
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Radiation therapy causes both muscle and nerve tissue damage. However, the evolution and mechanisms of these damages are not fully understood. Information on the state of active muscle fibres and motoneurons can be obtained by measuring sEMG signals and calculating the conduction velocity (CV) and firing rate of individual motor units, respectively. The aim of this pilot study was to evaluate if the multi-channel surface EMG (sEMG) technique could be applied to the sternocleidomastoideus muscle (SCM) of radiotherapy patients, and to assess if the CV and firing rate are altered as a consequence of the radiation. Surface EMG signals were recorded from the radiated and healthy SCM muscles of 10 subjects, while subjects performed isometric rotation of the head. CV and firing rate were calculated using two recently proposed methods based on spatio-temporal processing of the sEMG signals. The multi-channel sEMG technique was successfully applied to the SCM muscle and CV and firing rates were obtained. The measurements were fast and simple and comfortable for the patients. Sufficient data quality was obtained from both sides of seven and four subjects for the CV and firing rate analysis, respectively. No differences in CV or firing rate were found between the radiated and non-radiated sides (p = 0.13 and p = 0.20, respectively). Firing rate and CV were also obtained from a myokymic discharge pattern. It was found that the CV decreased significantly (p = 0.01) during the bursts.
Keyword
- Multi-channel EMG
- Radiation therapy
- Conduction velocity
- Firing rate
- Myokymic discharges
Publication and Content Type
- ref (subject category)
- art (subject category)
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