Global organization of dynamics in oscillatory heterogeneous excitable media.
An oscillatory heterogeneous excitable medium undergoes a transition from periodic target patterns to a bursting rhythm driven by the spontaneous initiation and termination of spiral waves as coupling or density is reduced. We illustrate these phenomena in monolayers of chick embryonic heart cells u...
| Main Authors: | , , |
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| Format: | Journal article |
| Language: | English |
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2005
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| _version_ | 1797059403822661632 |
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| author | Bub, G Shrier, A Glass, L |
| author_facet | Bub, G Shrier, A Glass, L |
| author_sort | Bub, G |
| collection | OXFORD |
| description | An oscillatory heterogeneous excitable medium undergoes a transition from periodic target patterns to a bursting rhythm driven by the spontaneous initiation and termination of spiral waves as coupling or density is reduced. We illustrate these phenomena in monolayers of chick embryonic heart cells using calcium-sensitive fluorescent dyes. These results are modeled in a heterogeneous cellular automaton in which the neighborhood of interaction and cell density is modified. Parameters that give rise to bursting rhythms are organized in distinct zones in parameter space, leading to a global organization that should be applicable to the dynamics in a large class of excitable media. |
| first_indexed | 2024-03-06T20:03:45Z |
| format | Journal article |
| id | oxford-uuid:283981f1-4df7-4710-b352-f0a6005da8b9 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T20:03:45Z |
| publishDate | 2005 |
| record_format | dspace |
| spelling | oxford-uuid:283981f1-4df7-4710-b352-f0a6005da8b92022-03-26T12:11:34ZGlobal organization of dynamics in oscillatory heterogeneous excitable media.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:283981f1-4df7-4710-b352-f0a6005da8b9EnglishSymplectic Elements at Oxford2005Bub, GShrier, AGlass, LAn oscillatory heterogeneous excitable medium undergoes a transition from periodic target patterns to a bursting rhythm driven by the spontaneous initiation and termination of spiral waves as coupling or density is reduced. We illustrate these phenomena in monolayers of chick embryonic heart cells using calcium-sensitive fluorescent dyes. These results are modeled in a heterogeneous cellular automaton in which the neighborhood of interaction and cell density is modified. Parameters that give rise to bursting rhythms are organized in distinct zones in parameter space, leading to a global organization that should be applicable to the dynamics in a large class of excitable media. |
| spellingShingle | Bub, G Shrier, A Glass, L Global organization of dynamics in oscillatory heterogeneous excitable media. |
| title | Global organization of dynamics in oscillatory heterogeneous excitable media. |
| title_full | Global organization of dynamics in oscillatory heterogeneous excitable media. |
| title_fullStr | Global organization of dynamics in oscillatory heterogeneous excitable media. |
| title_full_unstemmed | Global organization of dynamics in oscillatory heterogeneous excitable media. |
| title_short | Global organization of dynamics in oscillatory heterogeneous excitable media. |
| title_sort | global organization of dynamics in oscillatory heterogeneous excitable media |
| work_keys_str_mv | AT bubg globalorganizationofdynamicsinoscillatoryheterogeneousexcitablemedia AT shriera globalorganizationofdynamicsinoscillatoryheterogeneousexcitablemedia AT glassl globalorganizationofdynamicsinoscillatoryheterogeneousexcitablemedia |