Abstract

MATEOS SALGADO, Erik Leonardo; AYALA GUERRERO, Fructuoso; PONTONES PEREZ, Karen Arisbeth  and  GUTIERREZ CHAVEZ, Carlos Alberto. Comparison of light and deep sleep through heart rate variability. Cienc. Psicol. [online]. 2019, vol.13, n.2, pp.275-282.  Epub Dec 01, 2019. ISSN 1688-4094.  https://doi.org/10.22235/cp.v13i2.1884.

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 α1. 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

Keywords : cardiovascular activity; heart rate variability; NREM sleep; non-linear analysis.

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