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Design and development of an electronic system for the selective stimulation and simultaneous measurement of the skin impedance

It has been found that electrical current applied to the human skin stimulates some of the peripheral nerves and fibers of the human body, causing several reactions such as the increase of sweat production. Moreover the analyses of such reactions can be used to diagnose some diseases, for example di...

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Autor principal:	Esser, Eduardo Mussoi
Formato:	Dissertação
Idioma:	Inglês
Publicado em:	Universidade Tecnológica Federal do Paraná 2015
Assuntos:	Estimulação elétrica transcutânea do nervo Estimulação neural Eletrofisiologia Tecidos (Anatomia e fisiologia) - Análise Engenharia elétrica Transcutaneous electrical nerve stimulation Neural stimulation Electrophysiology Tissues - Analysis Electric engineering
Acesso em linha:	http://repositorio.utfpr.edu.br/jspui/handle/1/1048
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spelling	riut-1-10482015-03-07T06:20:39Z Design and development of an electronic system for the selective stimulation and simultaneous measurement of the skin impedance Esser, Eduardo Mussoi Gamba, Humberto Remigio Nguyen, Phuc Estimulação elétrica transcutânea do nervo Estimulação neural Eletrofisiologia Tecidos (Anatomia e fisiologia) - Análise Engenharia elétrica Transcutaneous electrical nerve stimulation Neural stimulation Electrophysiology Tissues - Analysis Electric engineering It has been found that electrical current applied to the human skin stimulates some of the peripheral nerves and fibers of the human body, causing several reactions such as the increase of sweat production. Moreover the analyses of such reactions can be used to diagnose some diseases, for example diabetes. Nevertheless, most of the electrical stimulation devices, which use mostly square wave signals, are not optimal since they stimulate not only the desired glands (C-fiber) but also the Aδ-fibers of the body, responsible for the fast pain sensation. In this context, this work presents the development of a microcontroller based electronic system for controlling the electrical stimulation of human skin. The objective of the system was to make it possible to test different patterns of electric current pulses, in order to obtain the ideal shape for maximizing the desired stimulation effects with minimal pain. The result of the project was an electronic device that generates electrical pulses based on pre-programmed signals, which are received through a USB interface from a PC. Moreover the system was able to measure the skin impedance value during the electrical stimulation, complementing the diagnosis. The results of the tests carried out with the system showed that the pain intensity during the stimulation could be minimized according to the pulse shape not changing the amplitude and energy of the signal. Moreover a slight difference in the skin impedance was observed when different shapes were applied. A aplicação de corrente elétrica na pele humana estimula alguns dos nervos periféricos e fibras do corpo humano, causando diversas reações tais como o aumento da produção de suor. Além disso, a análise dessas reações pode ser usada para diagnosticar doenças como diabetes. No entanto, grande parte dos aparelhos de estimulação elétrica comerciais utilizam sinais de onda quadrada. Esses sinais não são ideais uma vez que estimulam não somente as glândulas desejadas (fibras C), mas também as fibras A-delta do corpo, responsáveis pela sensação rápida de dor. Neste contexto, este trabalho apresenta o desenvolvimento de um sistema eletrônico para controlar a estimulação elétrica da pele humana. O objetivo do sistema é tornar possível o teste diferentes padrões de pulsos de corrente elétrica, a fim de obter a forma ideal para maximizar os efeitos desejados com um mínimo de dor. Como resultado do projeto tem-se o desenvolvimento de um dispositivo eletrônico microcontrolado que gera pulsos elétricos baseados em sinais pré-programados recebidos de um PC via USB. Além disso, o sistema é capaz de medir o valor da impedância da pele durante a estimulação elétrica, o que pode complementar o processo de diagnóstico. Os resultados dos testes realizados com o sistema mostraram que a intensidade da dor durante a estimulação pode ser minimizada apenas com a forma do pulso, sem a alteração da amplitude e da energia do sinal. Além disso, uma pequena diferença na impedância da pele foi observada quando diferentes formas de onda foram aplicadas. 2015-02-09T16:33:44Z 2015-02-09T16:33:44Z 2011-02-11 masterThesis ESSER, Eduardo Mussoi. Design and development of an electronic system for the selective stimulation and simultaneous measurement of the skin impedance. 2011. 145 f. Dissertação (Mestrado em Engenharia Elétrica e Informática Industrial) – Universidade Tecnológica Federal do Paraná, Curitiba, 2011. http://repositorio.utfpr.edu.br/jspui/handle/1/1048 eng application/pdf Universidade Tecnológica Federal do Paraná Curitiba Programa de Pós-Graduação em Engenharia Elétrica e Informática Industrial
institution	Universidade Tecnológica Federal do Paraná
collection	RIUT
language	Inglês
topic	Estimulação elétrica transcutânea do nervo Estimulação neural Eletrofisiologia Tecidos (Anatomia e fisiologia) - Análise Engenharia elétrica Transcutaneous electrical nerve stimulation Neural stimulation Electrophysiology Tissues - Analysis Electric engineering
spellingShingle	Estimulação elétrica transcutânea do nervo Estimulação neural Eletrofisiologia Tecidos (Anatomia e fisiologia) - Análise Engenharia elétrica Transcutaneous electrical nerve stimulation Neural stimulation Electrophysiology Tissues - Analysis Electric engineering Esser, Eduardo Mussoi Design and development of an electronic system for the selective stimulation and simultaneous measurement of the skin impedance
description	It has been found that electrical current applied to the human skin stimulates some of the peripheral nerves and fibers of the human body, causing several reactions such as the increase of sweat production. Moreover the analyses of such reactions can be used to diagnose some diseases, for example diabetes. Nevertheless, most of the electrical stimulation devices, which use mostly square wave signals, are not optimal since they stimulate not only the desired glands (C-fiber) but also the Aδ-fibers of the body, responsible for the fast pain sensation. In this context, this work presents the development of a microcontroller based electronic system for controlling the electrical stimulation of human skin. The objective of the system was to make it possible to test different patterns of electric current pulses, in order to obtain the ideal shape for maximizing the desired stimulation effects with minimal pain. The result of the project was an electronic device that generates electrical pulses based on pre-programmed signals, which are received through a USB interface from a PC. Moreover the system was able to measure the skin impedance value during the electrical stimulation, complementing the diagnosis. The results of the tests carried out with the system showed that the pain intensity during the stimulation could be minimized according to the pulse shape not changing the amplitude and energy of the signal. Moreover a slight difference in the skin impedance was observed when different shapes were applied.
format	Dissertação
author	Esser, Eduardo Mussoi
author_sort	Esser, Eduardo Mussoi
title	Design and development of an electronic system for the selective stimulation and simultaneous measurement of the skin impedance
title_short	Design and development of an electronic system for the selective stimulation and simultaneous measurement of the skin impedance
title_full	Design and development of an electronic system for the selective stimulation and simultaneous measurement of the skin impedance
title_fullStr	Design and development of an electronic system for the selective stimulation and simultaneous measurement of the skin impedance
title_full_unstemmed	Design and development of an electronic system for the selective stimulation and simultaneous measurement of the skin impedance
title_sort	design and development of an electronic system for the selective stimulation and simultaneous measurement of the skin impedance
publisher	Universidade Tecnológica Federal do Paraná
publishDate	2015
citation	ESSER, Eduardo Mussoi. Design and development of an electronic system for the selective stimulation and simultaneous measurement of the skin impedance. 2011. 145 f. Dissertação (Mestrado em Engenharia Elétrica e Informática Industrial) – Universidade Tecnológica Federal do Paraná, Curitiba, 2011.
url	http://repositorio.utfpr.edu.br/jspui/handle/1/1048
_version_	1805313247963774976
score	10,814766

Design and development of an electronic system for the selective stimulation and simultaneous measurement of the skin impedance

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