Cover of: Theory of excitable media | Vladislav Semenovich Markin

Theory of excitable media

  • 303 Pages
  • 1.61 MB
  • English
Wiley , New York
Neural conduction -- Mathematical models., Action potentials (Electrophysiology) -- Mathematical models., Excitation (Physiology), Neural circu
StatementV.S. Markin, V.F. Pastushenko, Y.A. Chizmadzhev.
SeriesNonequilibrium problems in the physical sciences and biology,, v. 6
ContributionsPastushenko, V. F., Chizmadzhev, I͡U︡riĭ Aleksandrovich.
LC ClassificationsQP363 .M3413 1987
The Physical Object
Paginationxi, 303 p. :
ID Numbers
Open LibraryOL2384516M
ISBN 100471816760
LC Control Number87013373

This book is devoted to theoretical physics methods in the theory of excitable media. The analogy between biological excitable media and active media is well known in physics and this information gives impetus to the approach used in this book.

An excitable medium is a nonlinear dynamical system which has the capacity to propagate a wave of some description, and which cannot support the passing of another wave until a certain amount of time has passed (known as the refractory time).

A forest is an example of an excitable medium: if a wildfire burns through the forest, no fire can return to a burnt spot until the vegetation has gone. The analogy between biological excitable media and active media is well known in physics and this information gives impetus to the approach used in this book.

This book is the result of investigations on excitable media theory carried out by the Institute of Electrochemistry during the last decade in the USSR. The answer is found in the remediation or layer model of media, broached already in the introduction, wherein media are essentially nothing but formal containers housing other pieces of media.

This is a claim most clearly elaborated on the opening pages of Marshall McLuhan’s Understanding Media.

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Spiral waves in diverse excitable media exhibit strikingly variegated behavior. Mechanistic interpretations of excitability in laboratory systems are commonly tested by comparing the wavelength, period, and meander patterns of the model’s spiral waves with laboratory observations, but models seem seldom to be rejected by such by: COVID Resources.

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In this paper, we develop a geometrical theory for waves in excitable reacting media. Using singular perturbation arguments and dispersion of traveling plane wave trains, we derive an approximate theory of wave front propagation which has strong resemblance to the geometrical diffraction theory of high frequency waves in hyperbolic systems, governed by the eikonal by: An introduction to excitable media.

Excitable media are nonlinear dynamic systems known for exhibiting complex behavior that can be observed as pattern formation. They are usually defined by a reaction-diffusion differential equation. A general theory of wave propagation in one- two- and three-dimensional excitable media, which has recently come to maturity, is quite successful in accounting for typical properties of such waves: dispersion, spiral rotation, and scroll-wave motion.

In a spatially homogeneous environment an excitable media is characterized by a globally stable equilibrium state, and also by a threshold mechanism which produces a large amplitude response to a sufficiently large by: In this shrewd and compelling book, Judith butler, the philosopher of Queer Theory and the performative theory of gender, takes up the thorniest problems of our day concerning the relation between speech and action, such as hate speech, pornography, and the military's policy that makes a declaration of homosexuality a punishable act.

Travelling waves in excitable media usually annihilate each other upon collision. The shell given in Figurehowever, shows crossings of oblique lines.

Keeping the space-time character of this pattern in mind, these crossings indicate the penetration of waves – a behaviour that is. Home › Feminism › Key Theories of Judith Butler.

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A.S. Mikhailov: “Kinematics of wave patterns in excitable media” in Nonlinear Wave Processes in Excitable Media, ed. by A.V. Holden, M. Markus, H.G.

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Varieties of spiral wave behavior: An experimentalist's approach to the theory of excitable media. Winfree AT(1). Author information: (1) BSW, University of Arizona, Tucson, Arizona Spiral waves in diverse excitable media exhibit strikingly variegated behavior.

Mechanistic interpretations of excitability in laboratory systems are Cited by: Split into 4 sections – Reading theory, Key thinkers and schools, Approaches and Media Theory in context; New to the second edition: New chapters on New Media, and Audiences as Producers; Reading Media Theory will assist you in developing close-reading and analytic skills.

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Description Theory of excitable media PDF

New Media Theory Although the practice of theorizing new media has a history as long as communication studies itself, the turn to new media theory has only formalized itself since the s.

The accelerated diffusion of digital media from telecommunications and information technology sectors in the s has led media and communication studiesFile Size: KB. A stimulating, eclectic accountof new media that finds its origins in old media, particularly the cinema.

In this book Lev Manovich offers the first systematic and rigorous theory of new media. He places new media within the histories of visual and media cultures of the last few centuries.

He discusses new media's reliance on conventions of old media, such as the rectangular frame and mobile 4/5(9). An excitable medium is a spatially distributed array of excitable elements, each element being a local dynamical system with an asymptotically stable steady state.

What makes an element excitable is that, although small disturbances decay directly back to the steady state, perturbations of sufficient magnitude send the dynamical system off in a Cited by: 2.

Normative media theory. Media theory refers to the complex of social-political-philosophical principles which organize ideas about the relationship between media and society. Within this is a type of theory called `normative theory', which is concerned with what the media ought to be doing in society rather than what they actually do.

In general, the dominant ideas about the obligations of. Historically speaking, the propagation of action potentials has inspired new mathematics, particularly with regard to the PDE theory of waves in excitable media.

More recently, continuum neural field models of large-scale brain networks have generated a new set of interesting mathematical questions with regard to the solution of nonlocal. Eras of Media Theory. There are four main eras of media theory. The four eras are mass society, scientific perspective, limited effects and cultural criticism.

Theories are constructed within media technology eras. These theories came about due to changes in. “Intersectionality” is the latest academic craze sweeping the American academy. it’s a recent neo-Marxist theory that argues that social oppression does not simply apply to single.

In the theory of autowave phenomena an autowave reverberator is an autowave vortex in a two-dimensional active medium. A reverberator appears a result of a rupture in the front of a plane autowave.

Such a rupture may occur, for example, via collision of the front with a nonexcitable obstacle. Chapter 1. “New Media” and Marshall McLuhan: An Introduction “Much of what McLuhan had to say makes a good deal more sense today than it did in because he was way ahead of his time.” - Okwor Nicholaas writing in the J Daily Champion (Lagos, Nigeria) “I don't necessarily agree with everything I say." – Marshall McLuhanFile Size: KB.

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In this book, all the key issues and debates in media studies are covered in a lively and accessible style, including the main features of global media corporations and approaches to the study of media effects, consumer power. A theory for spiral wave drift induced by ac and polarized electric fields in chemical excitable media Article (PDF Available) in Scientific Reports 7(1) December with 42 Reads.

Critical Theories of Mass Media is a key text for students of cultural studies, communications and media studies, and sociology. Paul A. Taylor is Senior Lecturer in Communications Theory, University of Leeds, UK.

Jan Ll. Harris is an independent scholar. Paul A. Taylor and Jan Ll. Harris THEN AND NOW CRITICAL THEORIES OF MASS MEDIA ISBN File Size: 1MB.This theory was founded by George Gerbner inand was based on the ideas that Television has a bigger influence on its viewers than any other form of mass media (Coenen 12).

Gerbner believed this because television has become a central part of our lives, and culture in the 21st century.Vladislav Semyonovich Markin, Russian Biophysicist.

Recipient State prize of Union of the Soviet Socialist Republics in science and technical, Council of .