Non-stationary myoelectric signals and muscle fatigue
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| Deutscher übersetzter Titel: | Nicht feststehende EMG-Signale und Muskelermuedung |
|---|---|
| Autor: | MacIsaac, D.; Parker, P.A.; Scott, R.N. |
| Erschienen in: | Methods of Information in Medicine |
| Veröffentlicht: | 39 (2000), 2, S. 125-129, Lit. |
| Format: | Literatur (SPOLIT) |
| Publikationstyp: | Zeitschriftenartikel |
| Medienart: | Gedruckte Ressource |
| Sprache: | Englisch |
| ISSN: | 0026-1270, 2511-705X |
| Schlagworte: | |
| Online Zugang: | |
| Erfassungsnummer: | PU199912407774 |
| Quelle: | BISp |
Abstract des Autors
A mathematical derivation for the mean frequency of a myoelectric signal (MES) is provided based on an amplitude modulation model for non-stationary MES. With this derivation, it is shown that mean frequency estimates of stationary and non-stationary myoelectric signals theoretically are not significantly different in a physiologically practical context. While this prediction is confirmed via a computer simulation, it is refuted with empirical evidence. Regardless, it is shown in a final study that mean frequency is capable of tracking a downward shift in the power spectrum with fatigue even in non-stationary myoelectric signals. Verf.-Referat