<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0188-6266</journal-id>
<journal-title><![CDATA[Acta universitaria]]></journal-title>
<abbrev-journal-title><![CDATA[Acta univ]]></abbrev-journal-title>
<issn>0188-6266</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Guanajuato, Dirección de Investigación y Posgrado]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0188-62662021000100111</article-id>
<article-id pub-id-type="doi">10.15174/au.2021.2547</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Prototipo de una etapa de potencia para estimulación bimodal enfocada en rehabilitación de miembro superior]]></article-title>
<article-title xml:lang="en"><![CDATA[Prototype of a bimodal stimulation power stage aimed at upper-limb stroke rehabilitation]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Leyva Gutierrez]]></surname>
<given-names><![CDATA[Alejandro Emilio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández Popo]]></surname>
<given-names><![CDATA[Jonadab Ignacio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martínez Méndez]]></surname>
<given-names><![CDATA[Rigoberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma del Estado de México Facultad de Medicina ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra Departamento de Desarrollo Tecnológico ]]></institution>
<addr-line><![CDATA[CDMX ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Autónoma del Estado de México Facultad de Ingeniería ]]></institution>
<addr-line><![CDATA[Toluca Estado de México]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2021</year>
</pub-date>
<volume>31</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0188-62662021000100111&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0188-62662021000100111&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0188-62662021000100111&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen En pacientes con la enfermedad vascular cerebral (EVC) la discapacidad motriz es la secuela más común, compleja y difícil de rehabilitar. La estimulación eléctrica funcional (EEF) y la estimulación eléctrica medular (EEM) se encuentran entre las técnicas más prometedoras en la rehabilitación motora. Sin embargo, en su forma de aplicación actual, presentan la desventaja de requerir intervenciones invasivas (cirugías para la colocación de electrodos). Este trabajo describe el diseño y desarrollo de un prototipo para un estimulador no invasivo capaz de realizar EEF mediante el uso de pulsos bipolares y EEM mediante el uso de corriente continua. El objetivo final del prototipo es servir como herramienta para realizar investigación sobre una nueva terapia de rehabilitación en extremidades superiores utilizando EEF y EEM. En este artículo, se presentan las pruebas que permiten concluir que el sistema desarrollado es útil para realizar estimulaciones no invasivas, ya que es capaz de entregar de 0 mA a 200 mA pico-pico, con duración de pulso de 0 &#956;s a 500 &#956;s y un rango de frecuencia de 0 Hz a 150 Hz, características con las que no cuenta ningún otro estimulador actualmente y que son requeridas para este tipo de estimulación.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract In patients with cerebrovascular disease, motor disability is the most common, complex, and difficult-to-rehabilitate sequela. Functional electrical stimulation (FES) and spinal cord stimulation (SCS) are among the most promising techniques for motor rehabilitation. However, in their current form of application, they have the disadvantage of requiring invasive interventions (surgeries for placing electrodes). This work describes the design and development of a prototype for a non-invasive stimulator capable of performing FES using bipolar pulses and SCS using direct current (DC). The goal of the proposed device is to serve as a tool for conducting research on a new upper extremity rehabilitation therapy with FES and SCS. This article presents the tests and results that allow to conclude that the developed system is useful for non-invasive stimulations, since it can deliver 0 mA to 200 mA peak-peak, with a pulse duration of 0 &#956;s to 500 &#956;s, and a frequency range from 0 Hz to 150 Hz. Currently, no other stimulator possesses such characteristics, which are required for this type of stimulation.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Estimulación eléctrica funcional]]></kwd>
<kwd lng="es"><![CDATA[enfermedad vascular cerebral]]></kwd>
<kwd lng="es"><![CDATA[estimulación medular]]></kwd>
<kwd lng="es"><![CDATA[miembro superior]]></kwd>
<kwd lng="en"><![CDATA[Functional electrical stimulation]]></kwd>
<kwd lng="en"><![CDATA[cerebrovascular disease]]></kwd>
<kwd lng="en"><![CDATA[spinal cord stimulation]]></kwd>
<kwd lng="en"><![CDATA[upper limb]]></kwd>
</kwd-group>
</article-meta>
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