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An integrative model of the surface EMG in pathological tremor. 2010

Jakob L Dideriksen, and Dario Farina
Center for Sensory-Motor Interaction (SMI), Department of Health Science and Technology, Aalborg University, 9000, Denmark. jldi@hst.aau.dk

A novel integrative model for simulating the surface EMG signal during pathological tremor is presented. The model combines neuromuscular elements, biomechanical descriptions, and surface EMG generation. First single motor unit spike trains are generated based on the sum of the simulated descending drive, afferent input and an oscillatory noise causing tremor. Based on this activity pattern, the muscle force is estimated, from which the limb movement is derived. The surface EMG is simulated as the sum of the surface action potentials generated by the active motor units. The model was able to simulate several features of tremor that have been previously observed experimentally, including the spectral characteristics of the surface EMG during tremor and the pattern of activity of single motor units.

UI MeSH Term Description Entries
D008959 Models, Neurological Theoretical representations that simulate the behavior or activity of the neurological system, processes or phenomena; includes the use of mathematical equations, computers, and other electronic equipment. Neurologic Models,Model, Neurological,Neurologic Model,Neurological Model,Neurological Models,Model, Neurologic,Models, Neurologic
D004576 Electromyography Recording of the changes in electric potential of muscle by means of surface or needle electrodes. Electromyogram,Surface Electromyography,Electromyograms,Electromyographies,Electromyographies, Surface,Electromyography, Surface,Surface Electromyographies
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D013499 Surface Properties Characteristics or attributes of the outer boundaries of objects, including molecules. Properties, Surface,Property, Surface,Surface Property
D013569 Synapses Specialized junctions at which a neuron communicates with a target cell. At classical synapses, a neuron's presynaptic terminal releases a chemical transmitter stored in synaptic vesicles which diffuses across a narrow synaptic cleft and activates receptors on the postsynaptic membrane of the target cell. The target may be a dendrite, cell body, or axon of another neuron, or a specialized region of a muscle or secretory cell. Neurons may also communicate via direct electrical coupling with ELECTRICAL SYNAPSES. Several other non-synaptic chemical or electric signal transmitting processes occur via extracellular mediated interactions. Synapse
D014202 Tremor Cyclical movement of a body part that can represent either a physiologic process or a manifestation of disease. Intention or action tremor, a common manifestation of CEREBELLAR DISEASES, is aggravated by movement. In contrast, resting tremor is maximal when there is no attempt at voluntary movement, and occurs as a relatively frequent manifestation of PARKINSON DISEASE. Action Tremor,Intention Tremor,Resting Tremor,Coarse Tremor,Continuous Tremor,Darkness Tremor,Fine Tremor,Intermittent Tremor,Involuntary Quiver,Massive Tremor,Passive Tremor,Persistent Tremor,Pill Rolling Tremor,Rest Tremor,Saturnine Tremor,Senile Tremor,Static Tremor,Tremor, Limb,Tremor, Muscle,Tremor, Neonatal,Tremor, Nerve,Tremor, Perioral,Tremor, Semirhythmic,Action Tremors,Coarse Tremors,Continuous Tremors,Darkness Tremors,Fine Tremors,Intention Tremors,Intermittent Tremors,Involuntary Quivers,Limb Tremor,Limb Tremors,Massive Tremors,Muscle Tremor,Muscle Tremors,Neonatal Tremor,Neonatal Tremors,Nerve Tremor,Nerve Tremors,Passive Tremors,Perioral Tremor,Perioral Tremors,Persistent Tremors,Pill Rolling Tremors,Quiver, Involuntary,Rest Tremors,Resting Tremors,Saturnine Tremors,Semirhythmic Tremor,Semirhythmic Tremors,Senile Tremors,Static Tremors,Tremor, Action,Tremor, Coarse,Tremor, Continuous,Tremor, Darkness,Tremor, Fine,Tremor, Intention,Tremor, Intermittent,Tremor, Massive,Tremor, Passive,Tremor, Persistent,Tremor, Pill Rolling,Tremor, Rest,Tremor, Resting,Tremor, Saturnine,Tremor, Senile,Tremor, Static,Tremors

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