1998/05/08 by J. Timmer, Jens Timmer, M. Lauk +7
Biochemistry, Genetics and Molecular Biology · Engineering · Medicine · Neuroscience · Physics and Astronomy · #Chaotic Dynamics (nlin.CD) #FOS: Biological sciences #FOS: Physical sciences #Muscle activation and electromyography studies #Neurological disorders and treatments #Neuroscience and Neural Engineering #Quantitative Biology (q-bio) #chao-dyn #nlin.CD #q-bio
paper · pdf · doi:10.48550/arxiv.chao-dyn/9805012
10 pages, 11 figures, to appear in Biological Cybernetics
arxiv created 1998/05/08 · openalex publication_date 1998/05/08 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We investigate the relationship between synchronized muscle activity and tremor time series in (enhanced) physiological tremor by cross-spectral analysis. Special attention is directed to the phase spectrum and its possibilities to clarify the contribution of reflex mechanisms to physiological tremor. The phase spectra are investigated under the assumptions that the EMG synchronization was caused by a reflex, respectively a central oscillator. In comparison of these results to phase spectra of measured data we found a significant contribution of reflexes. But reflexes only modify existing peaks in the power spectrum. The main agents of physiological tremor are an efferent pace and the resonant behavior of the biomechanical system.