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  • 1
    Electronic Resource
    Electronic Resource
    Some system considerations of neuron pools with feedback (1976)
    Springer
    Biological cybernetics 21 (1976), S. 79-83 
    Details
    ISSN: 1432-0770
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Computer Science , Physics
    Notes: Abstract This paper describes an approach to the analysis of the inputoutput relationships present in a neuron pool that receives a number of inputs. These inputs consist of primary inputs to the neuron pool and inputs resulting from feedback of information from the neuron pool as well. Multiple input-output relationships are obtained in terms of the synaptic weightings of the inputs, the membrane response characteristics of the neurons and the conduction delays on the feedback pathways.y=(I+MHD) -1 ·MFx is the explicit representation of the cell pool behavior assuming quasi-linear conditions, wherey is the output vector of cell responses,I is the identity matrix,M is the response matrix of the cells,H is the feedback synaptic weighting matrix,D is the delay matrix,F is the input weighting matrix, andx is the input vector. It is shown that a solution to this formulation exists, is unique, is stable, and can be computed by specified algorithms. An insight gained from this formulation suggests that the output of each cell in the pool is related to virtually all of the inputs to the pool and the outputs of all cells in the pool.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01259389
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Biological system transfer-function extraction using swept-frequency and correlation techniques (1972)
    Springer
    Medical & biological engineering & computing 10 (1972), S. 609-620 
    Details
    ISSN: 1741-0444
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Description / Table of Contents: Sommaire L'article décrit l'application d'une technique d'identification à système de balayage de fréquence, aux systèmes biologiques. En balayant linéairement la fréquence d'un signal sinusoïdal d'entrée à travers la gamme des fréquences sous observation, le profil de réponse à la fréquence d'un système biologique peut être déterminé rapidement. Les caractéristiques de transfer de système sont extraites de la densité spectrale de puissance d'entrée et des calculs de densité spectrale à puissance croisée sortie-entrée. Le bruit de fond, la distorsion harmonique et les considérations de durée de balayage sont données. Le balayage de fréquence logarithmique est suggéré comme moyen d'éviter la distorsion harmonique.
    Abstract: Inhaltsangabe Diese Arbeit beschreibt die Anwendung eines Frequenzwobbel-Erkennungsverfahrens auf biologische Systeme. Das Frequenzverhalten eines biologischen Systems kann sehr schnell bestimmt werden, idem die Frequenz des sinusförmigen Einganssignales über den interessierenden Frequenzbereich linear variiert wird. Die Systemübertragungsfunktion wird aus Berechnungen der eingangsseitigen spektralen Leistungsdichte und der spektralen Eingangs/Ausgangs-Übertragungsleistungsdichte erhalten. Überlegungen hinsichtlich Rauschens, harmonischer Verzerrungen und der Frequenzänderungsgeschwindigkeit werden angeführt. Zur Vermeidung harmonischer Verzerrungen wird eine logarithmische Frequenzvariation vorgeschlagen.
    Notes: Abstract The paper describes the application of a swept-frequency-system identification technique to biological systems. By linearly sweeping the frequency of the sinusoidal input signal over the range of frequencies of interest, the frequency-response profile of the biological system can be rapidly determined. System transfer characteristics are extracted from the input-power spectral density and output-input crosspower spectral-density computations. Noise, harmonic distortion and sweeptime considerations are given. Logarithmic frequencysweeping is suggested as a means of avoiding harmonic distortion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02476078
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  • 3
    Electronic Resource
    Electronic Resource
    Velocity dispersion in skeletal muscle efferent nerve bundle and its effect upon time and frequency response (1969)
    Springer
    Medical & biological engineering & computing 7 (1969), S. 283-288 
    Details
    ISSN: 1741-0444
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Description / Table of Contents: Sommaire On montre que les dispersions des vitesses de conduction dans un faisceau de nerfs desservant un muscle du squelette sont en première approximation sans effet sur le temps de réponse et la réponse en fréquence du muscle. Les effets secondaires dûs à une désynchronisation des salves afférentes provoquent entre le faisceau de nerfs et le muscle un ‘effet d'interface’. Cet effet d'interface peut être important pour des considérations biocybernétiques de l'action neuro-musculaire.
    Abstract: Zusammenfassung Es wird gezeigt, daß die Geschwindigkeitsverteilung in dem zu einem Skelettmuskel gehörigen Nervenbündel keinen signifikanten primären Effekt auf die Zeit und Frequenzansprechbarkeit des Muskels hat. Sekundäre Effekte, die auf Desynchronisation in der efferenten Entladung beruhen, können zwischen dem Nervenbündel und dem Muskel ‘Grenzflächeneffekte’ verursachen. Dieser ‘Grenzflächeneffekt’ kann für biokybernetische Betrachtungen der neuromuskulären Leistung von Bedeutung sein.
    Notes: Abstract Velocity dispersion in the nerve bundle subserving a skeletal muscle is shown not to have a significant primary effect on the time and frequency response of muscle. Secondary effects due to desynchronization in efferent volleys may produce an ‘interface effect’ between the nerve bundle and the muscle. This ‘interface effect’ may be important in biocybernetic considerations of neuromuscular action.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02474768
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  • 4
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    Some system considerations of neuron pools with feedback (1976)
    Springer
    Details
    Publication Date: 1976-06-01
    Print ISSN: 0340-1200
    Electronic ISSN: 1432-0770
    Topics: Biology , Computer Science , Physics
    Published by Springer
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  • 5
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    In Situ Neutron Diffraction Study of Crystallographic Evolution and Thermal Expansion Coefficients in U-22.5 at.%Zr During Annealing (2020)
    Springer
    Details
    Publication Date: 2020-03-04
    Print ISSN: 1047-4838
    Electronic ISSN: 1543-1851
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Published by Springer
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  • 6
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    Post-Irradiation Non-Destructive Analyses of the AFIP-7 Experiment (2017)
    Springer
    Details
    Publication Date: 2017-08-28
    Print ISSN: 1047-4838
    Electronic ISSN: 1543-1851
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Published by Springer
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