<?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>2631-2581</journal-id>
<journal-title><![CDATA[Revista Ecuatoriana de Neurología]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Ecuat Neurol]]></abbrev-journal-title>
<issn>2631-2581</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Médica Ecuatoriana de Neurología]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2631-25812020000200058</article-id>
<article-id pub-id-type="doi">10.46997/revecuatneurol29200058</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Validación de un paradigma de razonamiento abstracto para Resonancia Magnética funcional (RMf)]]></article-title>
<article-title xml:lang="en"><![CDATA[Validation of an abstract reasoning paradigm for functional magnetic resonance (fMR)]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Shunta Cocha]]></surname>
<given-names><![CDATA[Fernando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Estévez Abad]]></surname>
<given-names><![CDATA[Fernando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aguirre Reyes]]></surname>
<given-names><![CDATA[Daniel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alvarado Cando]]></surname>
<given-names><![CDATA[Omar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López Hidalgo]]></surname>
<given-names><![CDATA[Andrés]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Peña Tapia]]></surname>
<given-names><![CDATA[Pablo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bueno Pacheco]]></surname>
<given-names><![CDATA[Alexandra]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad del Azuay SOLCA Núcleo de Loja ]]></institution>
<addr-line><![CDATA[Cuenca ]]></addr-line>
<country>Ecuador</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2020</year>
</pub-date>
<volume>29</volume>
<numero>2</numero>
<fpage>58</fpage>
<lpage>66</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.senescyt.gob.ec/scielo.php?script=sci_arttext&amp;pid=S2631-25812020000200058&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.senescyt.gob.ec/scielo.php?script=sci_abstract&amp;pid=S2631-25812020000200058&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.senescyt.gob.ec/scielo.php?script=sci_pdf&amp;pid=S2631-25812020000200058&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Los paradigmas son las tareas experimentales que se usan para mapear el cerebro a través de Resonancia Magnética funcional. Su validación previa es fundamental para garantizar un registro exitoso de la actividad cognitiva a investigar. Se validó un paradigma de razonamiento abstracto formado por una tarea de analogías semánticas y una tarea de analogías visuales en jóvenes-adultos entre 18 y 30 años de edad de la ciudad de Cuenca-Ecuador. Se programó el paradigma en el software libre PsychoPy 3 para experimentos de neurociencia. Los resultados indicaron que el paradigma fue comprensible y sencillo de resolver. También se halló que el tiempo promedio de respuesta en la tarea de razonamiento semántico fue significativamente menor al tiempo promedio de resolución de la tarea de razonamiento visual. Por lo tanto, se pudo establecer el número de estímulos necesarios y su tiempo promedio de exposición para garantizar la potencia de contraste y significancia estadística al utilizarlo en un Resonador Magnético.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The paradigms are the experimental tasks that are used to map the brain through functional Magnetic Resonance Imaging. Its previous validation is essential to guarantee a successful record of the cognitive activity. A paradigm of abstract reasoning formed by a task of semantic and visual analogies was validated in young-adults between 18 and 30 years in the city of Cuenca-Ecuador. The paradigm was programmed in PsychoPy 3, a free software for neuroscience experiments. The results indicated that the experimental paradigm was understandable and easy to solve. It was also found that the average response time in the semantic reasoning task was significantly lower than the average resolution time of the visual reasoning task. Therefore, it was possible to establish the number of stimuli and their average exposure time needed for a functional Magnetic Resonance Imaging.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[paradigma]]></kwd>
<kwd lng="es"><![CDATA[validación]]></kwd>
<kwd lng="es"><![CDATA[resonancia magnética funcional]]></kwd>
<kwd lng="es"><![CDATA[razonamiento abstracto]]></kwd>
<kwd lng="es"><![CDATA[PsychoPy.]]></kwd>
<kwd lng="en"><![CDATA[paradigm]]></kwd>
<kwd lng="en"><![CDATA[validation]]></kwd>
<kwd lng="en"><![CDATA[functional magnetic resonance imaging]]></kwd>
<kwd lng="en"><![CDATA[abstract reasoning]]></kwd>
<kwd lng="en"><![CDATA[PsychoPy.]]></kwd>
</kwd-group>
</article-meta>
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