2008/01/17 by Miguel J. A. Láinez, Miguel J. A. Lainez, Luis-Millan Gonzalez +13
Medicine · Neuroscience · Physics and Astronomy · #FOS: Physical sciences #Genetic Neurodegenerative Diseases #Medical Physics (physics.med-ph) #Neurological disorders and treatments #Neuroscience and Neural Engineering #physics.med-ph
paper · pdf · doi:10.48550/arxiv.0801.2731
22 pages, 5 figures, 1 table
arxiv created 2008/01/17 · openalex publication_date 2008/01/17 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The influence of fatiguing stimuli applied to the quadriceps femoris on the tremor of the index finger on sixteen healthy subjects has been investigated, by measuring the acceleration and the electromyography activity of the extensor digitorum at two different speeds. No significant changes in the basal condition could be measured at 0.52 rad/s. However, at 1.05 rad/s the tremor amplitude (12.23%, p<0.05) and the electromyography activity (20.19%, p<0.05) increased in the time domain. In the frequential domain, the peak associated to the acceleration increased in 26.30% (p<0.05), while the electromiography activity experienced an increase of 81.34% (p<0.05). The largest change in frequency took place in the range 7-17 Hz. The discussion of the results leads to the conclusion that the supraespinal mechanism is responsible for the measured effect.