<?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>1688-4221</journal-id>
<journal-title><![CDATA[Ciencias Psicológicas]]></journal-title>
<abbrev-journal-title><![CDATA[Cienc. Psicol.]]></abbrev-journal-title>
<issn>1688-4221</issn>
<publisher>
<publisher-name><![CDATA[Universidad Católica del Uruguay.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1688-42212019000200275</article-id>
<article-id pub-id-type="doi">10.22235/cp.v13i2.1884</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Comparación del sueño ligero y profundo por medio de la variabilidad de la frecuencia cardíaca]]></article-title>
<article-title xml:lang="en"><![CDATA[Comparison of light and deep sleep through heart rate variability]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mateos Salgado]]></surname>
<given-names><![CDATA[Erik Leonardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ayala Guerrero]]></surname>
<given-names><![CDATA[Fructuoso]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pontones Pérez]]></surname>
<given-names><![CDATA[Karen Arisbeth]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gutiérrez Chávez]]></surname>
<given-names><![CDATA[Carlos Alberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional Autónoma México Facultad de Psicología ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma del Estado de México Facultad de Ciencias de la Conducta ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2019</year>
</pub-date>
<volume>13</volume>
<numero>2</numero>
<fpage>275</fpage>
<lpage>282</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.edu.uy/scielo.php?script=sci_arttext&amp;pid=S1688-42212019000200275&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.edu.uy/scielo.php?script=sci_abstract&amp;pid=S1688-42212019000200275&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.edu.uy/scielo.php?script=sci_pdf&amp;pid=S1688-42212019000200275&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: El análisis de la variabilidad de la frecuencia cardiaca (VFC) permite evaluar de forma no invasiva la actividad cardiovascular. La VFC presenta diferencias entre el sueño MOR y NMOR. Aunque, existen inconsistencias en el procedimiento de evaluación de la VFC en el sueño NMOR, hay estudios que lo dividen en sueño ligero y profundo mientras que otros no lo hacen. Nuestro objetivo fue determinar si había diferencias entre estos dos tipos de sueño en 12 medidas de la VFC. Se obtuvo la polisomnografía de 24 voluntarios sanos durante dos noches consecutivas. Se encontraron diferencias significativas entre ambos sueños en las medidas del dominio de tiempo DENN y LogVFC y en las del dominio no lineal DE2 y &#945;1. Estas medidas se caracterizan por proporcionar indicadores de la variabilidad en el funcionamiento cardiaco. Se concluye que al menos con estas medidas se justificaría la división del sueño NMOR en ligero y profundo]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: Heart rate variability (HRV) analysis allows a non-invasive assessment of the cardiovascular activity. It has been reported that HRV shows differences between REM and NREM sleep. However, there are inconsistencies in the HRV evaluation of NREM sleep, since there are studies that divide it into light and deep sleep and others do not. The objective of this research was to determine if there were differences between these two types of sleep in 12 measures of HRV. Polysomnography of 24 healthy volunteers was obtained during two consecutive nights. Significant differences were found between both sleep types in the measurements of the time domain SDNN and LogHRV, also in measurements of the non-linear domain SD2 and &#945;1. These measures are characterized by providing indicators of the variability in cardiac function. It is concluded that at least these measures would justify the division of the NREM sleep in light and deep sleep]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[actividad cardiovascular]]></kwd>
<kwd lng="es"><![CDATA[variabilidad de la frecuencia cardiaca]]></kwd>
<kwd lng="es"><![CDATA[sueño NMOR]]></kwd>
<kwd lng="es"><![CDATA[análisis no lineal]]></kwd>
<kwd lng="en"><![CDATA[cardiovascular activity]]></kwd>
<kwd lng="en"><![CDATA[heart rate variability]]></kwd>
<kwd lng="en"><![CDATA[NREM sleep]]></kwd>
<kwd lng="en"><![CDATA[non-linear analysis]]></kwd>
</kwd-group>
</article-meta>
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