کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1861796 1037541 2009 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The inverse excitation-induced abnormal spiral wave
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک و نجوم (عمومی)
پیش نمایش صفحه اول مقاله
The inverse excitation-induced abnormal spiral wave
چکیده انگلیسی

The effects of a local constant forcing on spiral waves in two-dimensional excitable media described by Bär model are investigated. A constant external forcing is imposed on the core of spiral wave, leading to parameter variability of a medium. It is found that the forcing can significantly alter the shape and rotation period of spiral wave when the values of related parameters are properly chosen. The change of wave structure is attributed to the transition from normal excitation to inverse excitation in the forced medium. An abnormal spiral wave with a very thick spiral arm has been observed. The physical mechanism underlying these phenomena is theoretically analyzed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 374, Issue 2, 28 December 2009, Pages 241–246
نویسندگان
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