The tongue as an excitable medium

Geographic tongue (GT) is a medical condition affecting approximately 2% of the population, whereby the papillae covering the upper part of the tongue are lost due to a slowly expanding inflammation. The resultant dynamical appearance of the tongue has striking similarities with well known out-of-eq...

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Main Authors: Gabriel Seiden, Sofia Curland
Format: Article
Language:English
Published: IOP Publishing 2015-01-01
Series:New Journal of Physics
Subjects:
Online Access:https://doi.org/10.1088/1367-2630/17/3/033049
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author Gabriel Seiden
Sofia Curland
author_facet Gabriel Seiden
Sofia Curland
author_sort Gabriel Seiden
collection DOAJ
description Geographic tongue (GT) is a medical condition affecting approximately 2% of the population, whereby the papillae covering the upper part of the tongue are lost due to a slowly expanding inflammation. The resultant dynamical appearance of the tongue has striking similarities with well known out-of-equilibrium phenomena observed in excitable media, such as forest fires, cardiac dynamics, chemically driven reaction-diffusion systems and morphogenesis in multicellular organisms. Here we identify GT as a novel example of excitable media dynamics and explore the evolution of the condition from a dynamical systems perspective. We focus on two characteristic aspects of GT in particular: anisotropic expansion of lesions and re-entry of the inflammation into recovering regions. Our investigation sheds light on the evolution of the inflammation and suggests a practical way to classify the severity of the condition, based on the characteristic patterns observed in GT patients.
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spelling doaj.art-6f7264e8a0b540469fe1849ff505c40f2023-08-08T14:20:52ZengIOP PublishingNew Journal of Physics1367-26302015-01-0117303304910.1088/1367-2630/17/3/033049The tongue as an excitable mediumGabriel Seiden0Sofia Curland1Department of Earth and Planetary Sciences, Weizmann Institute of Science, Rehovot 76100, Israel; Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Str. 38, D-01187 Dresden, GermanyDepartment of Earth and Planetary Sciences, Weizmann Institute of Science, Rehovot 76100, IsraelGeographic tongue (GT) is a medical condition affecting approximately 2% of the population, whereby the papillae covering the upper part of the tongue are lost due to a slowly expanding inflammation. The resultant dynamical appearance of the tongue has striking similarities with well known out-of-equilibrium phenomena observed in excitable media, such as forest fires, cardiac dynamics, chemically driven reaction-diffusion systems and morphogenesis in multicellular organisms. Here we identify GT as a novel example of excitable media dynamics and explore the evolution of the condition from a dynamical systems perspective. We focus on two characteristic aspects of GT in particular: anisotropic expansion of lesions and re-entry of the inflammation into recovering regions. Our investigation sheds light on the evolution of the inflammation and suggests a practical way to classify the severity of the condition, based on the characteristic patterns observed in GT patients.https://doi.org/10.1088/1367-2630/17/3/033049excitable mediapattern formationdisease modelingcellular automata
spellingShingle Gabriel Seiden
Sofia Curland
The tongue as an excitable medium
New Journal of Physics
excitable media
pattern formation
disease modeling
cellular automata
title The tongue as an excitable medium
title_full The tongue as an excitable medium
title_fullStr The tongue as an excitable medium
title_full_unstemmed The tongue as an excitable medium
title_short The tongue as an excitable medium
title_sort tongue as an excitable medium
topic excitable media
pattern formation
disease modeling
cellular automata
url https://doi.org/10.1088/1367-2630/17/3/033049
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