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  • 1
    Electronic Resource
    Electronic Resource
    Operator error in multistate myoelectric control systems (1978)
    Springer
    Medical & biological engineering & computing 16 (1978), S. 296-301 
    Details
    ISSN: 1741-0444
    Keywords: Error analysis ; Myoelectric control
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Description / Table of Contents: Sommaire Un système de commandes myoélectriques est celui, où le fonctionnement d'un dispositif est contrôlé par le potentiel électrique produit par la contraction volontaire d'un muscle. Ces systèmes sont surtout employés pour la commande de membres artificiels. Les premiers types de systèmes de commande était empiriques, mais de récents travaux ont produit des bases théoriques, pouvant prédire leur performance. Ceci devrait pouvoir améliorer les systèmes déjà existants, et rendre possible le développement de prothèses plus complexes.
    Abstract: Zusammenfassung Bei einem myoelektrischen Steuersystem wird der Betrieb eines Geräts durch ein elektrisches Potential gesteuert, das durch freiillige Kontraktion eines Muskels erzeugt wird. Diese Systeme wurden hauptsächlich zur Kontrolle künstlicher Glieder verwendet. Frühere Entwürfe des Steuersystems waren empirisch, jedoch wurden kürzlich einige theoretische Grundlagen erarbeitet, die ihre Leistung vorbestimmen können. Dieses wird zur Verbesserung der bestehenden Systeme führen und die Entwicklung mehr komplexer Prothesen wahrscheinlicher machen.
    Notes: Abstract A myoelectric control system is one in which the operation of a device is controlled by the electric potential produced by voluntary contraction of a muscle. These systems have been used mainly for the control of artificial limbs. Early design of the control systems was empirical, but recent work has provided some theoretical basis for predicting their performance. This should lead to improvements in existing systems and make feasible the development of more complex prostheses.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02442431
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  • 2
    Electronic Resource
    Electronic Resource
    Low temperature performance of electric hands (1979)
    Springer
    Medical & biological engineering & computing 17 (1979), S. 779-780 
    Details
    ISSN: 1741-0444
    Keywords: Artificial hands ; Prostheses
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02441562
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  • 3
    Electronic Resource
    Electronic Resource
    A biphasic pulse burst generator for afferent nerve stimulation (1987)
    Springer
    Medical & biological engineering & computing 25 (1987), S. 77-80 
    Details
    ISSN: 1741-0444
    Keywords: Myoelectric control ; Nerve stimulator ; Pulse burst ; Sensory feedback
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02442825
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  • 4
    Electronic Resource
    Electronic Resource
    Uniform discrete random-variable generator (1973)
    Springer
    Medical & biological engineering & computing 11 (1973), S. 362-364 
    Details
    ISSN: 1741-0444
    Keywords: Message source ; discrete ; independent ; uniform
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02475550
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  • 5
    Electronic Resource
    Electronic Resource
    Error rate in five-state myoelectric control systems (1980)
    Springer
    Medical & biological engineering & computing 18 (1980), S. 287-290 
    Details
    ISSN: 1741-0444
    Keywords: Man-machine systems ; Multistate control ; Myoelectric control ; Prosthetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract A myoelectric control system is one in which the operation of a device is controlled by the electric potential produced by voluntary contraction of a muscle. The utilisation of a single muscle site for the 3-state control of a myoelectric prosthesis has proven beneficial for certain amputees. It has been proposed that a single muscle site could be used for 5-state control, perhaps for an elbow and hand. This paper presents a preliminary study of the error probability for 5-state control.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02443381
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  • 6
    Electronic Resource
    Electronic Resource
    Split power rails for battery operated equipment—design alternatives (1986)
    Springer
    Medical & biological engineering & computing 24 (1986), S. 325-328 
    Details
    ISSN: 1741-0444
    Keywords: Power supply ; Battery-operated equipment ; Circuit design
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02441632
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  • 7
    Electronic Resource
    Electronic Resource
    Epoxy moulding system for the encapsulation of microelectronic devices suitable for implantation (1986)
    Springer
    Medical & biological engineering & computing 24 (1986), S. 206-208 
    Details
    ISSN: 1741-0444
    Keywords: Epoxy encapsulants ; Epoxy moulding ; Implant encapsulation ; Implant packaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02443939
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  • 8
    Electronic Resource
    Electronic Resource
    Micropower pulse-position modulator for time-shared applications (1986)
    Springer
    Medical & biological engineering & computing 24 (1986), S. 531-535 
    Details
    ISSN: 1741-0444
    Keywords: Micropower ; Pulse-position modulator ; Synchronous
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02443971
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  • 9
    Electronic Resource
    Electronic Resource
    Amplifier input impedances for myoelectric control (1986)
    Springer
    Medical & biological engineering & computing 24 (1986), S. 527-530 
    Details
    ISSN: 1741-0444
    Keywords: Differential amplifiers ; Input impedance ; Myoelectric control
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract Normal requirements for differential and common-mode input impedance of amplifiers for biological signals are reviewed. It is shown that these are not sufficient for satisfactory performance of amplifiers in myoelectric control applications, where accidental opening of the input circuit through electrode movement must not make the system susceptible to external noise. The additional constraint imposed by this application is examined, and a circuit is presented illustrating its practical resolution.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02443970
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  • 10
    Electronic Resource
    Electronic Resource
    Study of the effects of motor unit recruitment and firing statistics on the signal-to-noise ratio of a myoelectric control channel (1990)
    Springer
    Medical & biological engineering & computing 28 (1990), S. 225-231 
    Details
    ISSN: 1741-0444
    Keywords: Motor unit firing ; Motor unit recruitment ; Myoelectric ; Signal-to-noise ratio
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract An important measure of the performance of a myoelectric control channel for powered artificial limbs is the myoelectric signal processor output signal-to-noise ratio (SNR). The signal and noise in this context are, respectively, the mean and variance of the estimate of some signal parameter to be used for control purposes. These quantities are determined by the signal processor, motor unit recruitment and motor unit firing statistics. The paper investigates, through analytical, simulation and experimental work, the role and significance of recruitment and firing statistics in channel performance. Equations are derived which express, for the single and multi-unit cases, channel SNR as a function of the number of active units, firing rates, action potential amplitude variation and action potential moments. A computer-simulated myoelectric signal is generated in which these variables can be controlled and SNR measured. The simulation results are compared with the theoretical and found to agree very well. Limited experiments with wire intramuscular electrodes and surface electrodes are performed to measurein vivo SNR from the biceps brachii muscle. The results of the experiments agree well with those of the simulation and theoretical work. The significance of this work is that it provides insight into the roles of important physiological parameters in myoelectric channel performance. It will also provide data necessary for the development of SNR enhancement techniques.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02442671
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