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Optimal use of electrophysiological indicators of muscular effort and fatigueElectromyograms (EMG) from working muscles convey information on effort and fatigue. Their application, e.g., to assess the demands of vehicle control tasks, is complicated by the cooperative action of sets of muscles, by both intrinsic and imposed filtering, and by numerous other sources of variation. Fourier analyses of these noise like signals offer one approach to interpretation; downward spectral shifts accompany fatigue. Techniques are being sought (in both time and frequency domains) for further condensing the wideband EMG signals, while retaining essential information, into a concise 'state vector' usable in comparing control system designs.
Document ID
19820015260
Acquisition Source
Legacy CDMS
Document Type
Other - Other
Authors
Updike, O. L.
(Virginia Univ. Charlottesville, VA, United States)
Date Acquired
August 10, 2013
Publication Date
August 20, 1981
Publication Information
Publication: Houston Univ. The 1981 NASA ASEE Summer Fac. Fellowship Program, Vol. 2
Subject Category
Aerospace Medicine
Accession Number
82N23134
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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