Results 271 to 280 of about 568,915 (313)

Excitation and Conduction in the Nervous System

Annual Review of Physiology, 1953
It is appropriate to open this review by recording the death of Sir Charles Scott Sherrington, on March 4, 1952. The great indebtedness of neurophysi­ ology to him and to his students is amply recognized and has been sketched by one who knew him well (63).
M G, LARRABEE, C, EDWARDS
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Exciters and Systems of Excitation

Transactions of the American Institute of Electrical Engineers, 1920
IN laying out excitation systems for central power stations continuity of service is the primary requirement. First cost and economy in operation are secondary requirments which must be given due weight.
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Chaotic Behavior in Excitable Systems

Annals of the New York Academy of Sciences, 1990
This paper has dealt with biophysically accurate, or plausible, excitation systems. These are obtained from experiments, and so are complicated, often of high order, and are continually being updated by new experimental results. This is especially true for the excitation equations that represent cardiac tissue.
A V, Holden, M J, Lab
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Muscle fiber excitation system

2016 38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), 2016
Persons unable to exercise due to old age, immobility or medical condition may develop low bone density, decline in muscle contraction, blood pooling or clot. Due to musculoskeletal fragility caution is required in bone and muscle strengthening. Similarly, caution is required to use anticoagulant drug to prevent blood clot due to side effect, and ...
Bertram N. Ezenwa, Thomas Kernozek
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Excitable chemical reaction systems I. Definition of excitability and simulation of model systems

Journal of Mathematical Biology, 1975
Using a computer program based on the well-known Crank-Nicolson method, a number of onedimensional chemical reaction-diffusion systems showing “regenerative excitability” are simulated, both on a finite interval and on a circle. Hereby several phenomena known from nerve physiology as travelling trains and pulse omissions have been reproduced.
Karfunkel, H. R., Seelig, F. F.
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Excitation Spectrum of a Fermion System

Journal of Mathematical Physics, 1962
By the method of ``modes'' introduced by Sawada, the excitation spectra of a fermion system with singular interactions have been obtained in three cases; (1) with one additional particle above and and one hole below the Fermi surface, (2) with one additional particle above the Fermi surface, and (3) with two particles above the Fermi surface.
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On excitable dynamic systems with delays

Kybernetes, 2009
PurposeThe purpose of this paper is to discuss the properties of transparency and excitability of positive linear time‐invariant systems under internal point delays.Design/methodology/approachThe problem is solved by combining the algebraic conditions for positivity, excitability, and transparency for the case of linear and time‐invariant dynamic ...
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Excitation transfer in disordered systems

1981
Disorder profoundly affects excitation transport in solids. Plane wave solutions lose relevancy, and marked departures from conventional band transport can occur. In particular, in the limit of strong disorder, the wave functions of an otherwise pure crystal become localized. At zero temperature, transport becomes impossible.
T. Holstein, S. K. Lyo, R. Orbach
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The Critical Excitation of Nonlinear Systems

Journal of Applied Mechanics, 1977
The critical excitation of a mechanical system, in the terminology of this paper, is one that drives the system to a larger response peak than any other in some class of allowed excitations. The critical excitation is of interest in questions related to the reliability and safety because the magnitude of the response peak is frequently an indicator of ...
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OSCILLATIONS IN AN EXCITABLE SYSTEM WITH TIME-DELAYS

International Journal of Bifurcation and Chaos, 2003
Transition from excitability to asymptotic periodicity in an excitable system, modeled by the FitzHugh–Nagumo equations, with multiple time-delays, is analyzed. It is demonstrated that, for intermediate time-lags, the system has two coexisting attractors, a hyperbolic stable fixed point and a stable limit cycle.
Nikola Buric, Nebojsa Vasovic
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