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The emergence of wave emitting centres in an excitable medium

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F06%3A00016687" target="_blank" >RIV/60461373:22340/06:00016687 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    The emergence of wave emitting centres in an excitable medium

  • Original language description

    The response of an excitable biological medium to a double local stimulus is considered within the context of a mathematical model for a layer of starving cells of Dictyostelium discoideum, with both spatially one- and two-dimensional (1D and 2D) systembeing investigated. In contrast to the response usually seen in excitable media, whereby each superthreshold stimulus delivered to the relaxed medium results in the initiation of just one travelling wave, a source emitting a sequence of waves can developin the present excitable medium after the second stimulus. In a 1D system, only transient wave sources forming a limited number of waves are found. In 2D systems, a permanent wave sources consisting in a pair of spirals are observed as well as the transient wave sources forming circular wave patterns. The general features of the medium dynamics that underlie the observed responses to the double stimulus are discussed.

  • Czech name

    Vznik center emitujících vlny v excitabilních médiích

  • Czech description

    Práce se zaměřuje na matematické modelování šíření vln v biologickém exitabilním médiu, ve vrstvě hladovějících buněk hlenky Dictyostelium discoideum. V excitabilních médiích může prahový podnět vyvolat vznik jedné postupující vlny a po druhém stimulu dochází k šíření sekvence vln. V 1-D systému se vytváří pouze přechodný zdroj emitující omezený počet vln. U 2-D systému se objevují jak trvalá centra vysílající spirálové vlny, tak přechodná centra emitující kruhové vlny.

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    CI - Industrial chemistry and chemical engineering

  • OECD FORD branch

Result continuities

  • Project

    <a href="/en/project/GD104%2F03%2FH141" target="_blank" >GD104/03/H141: Reaction and transport phenomena in complex homogeneous and heterogeneous systems</a><br>

  • Continuities

    Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2006

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    JOURNAL OF THEORETICAL BIOLOGY

  • ISSN

    0022-5193

  • e-ISSN

  • Volume of the periodical

    240

  • Issue of the periodical within the volume

    1

  • Country of publishing house

    GB - UNITED KINGDOM

  • Number of pages

    13

  • Pages from-to

    136-148

  • UT code for WoS article

  • EID of the result in the Scopus database