Age differences in the variability and distribution of sleep spindle and rapid eye movement densities.

The present study had two main objectives. The first objective was to compare the sleep architecture of young and older adults, with an emphasis on sleep spindle density and REM density. The second objective was to examine two aspects of age differences that have not been considered in previous stud...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Kevin R Peters, Laura B Ray, Stuart Fogel, Valerie Smith, Carlyle T Smith
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2014
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/50e5773d817e45fb94a50b91e8bc6974
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:50e5773d817e45fb94a50b91e8bc6974
record_format	dspace
spelling	oai:doaj.org-article:50e5773d817e45fb94a50b91e8bc69742021-11-18T08:29:34ZAge differences in the variability and distribution of sleep spindle and rapid eye movement densities.1932-620310.1371/journal.pone.0091047https://doaj.org/article/50e5773d817e45fb94a50b91e8bc69742014-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24599302/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203The present study had two main objectives. The first objective was to compare the sleep architecture of young and older adults, with an emphasis on sleep spindle density and REM density. The second objective was to examine two aspects of age differences that have not been considered in previous studies: age differences in the variability of sleep measures as well as the magnitude of age differences in phasic events across the distribution of values (i.e., at each decile rather than a single measure of location such as the mean or median. A total of 24 young (mean age=20.75 ± 1.78 years) and 24 older (mean age=71.17 ± 6.15 years) adults underwent in-home polysomnography. Whole-night spindle density was significantly higher in young adults than older adults. The two age groups did not differ significantly in whole-night REM density, although significant increases in REM density across the night were observed in both age groups. These results suggest that spindle density is more affected by age than REM density. Although age differences were observed in the degree of absolute variability (older adults had significantly larger variances than young adults for sleep efficiency and time spent awake after sleep onset), a similar pattern was also observed within the two age groups: the four sleep measures with the lowest degrees of relative variability were the same and included time spent in REM and Stage 2 sleep, total sleep time, and sleep efficiency. The distributional analysis of age differences in sleep spindle density revealed that the largest age differences were initially observed in the middle of the distributions, but as the night progressed, they were seen at the upper end of the distributions. The results reported here have potential implications for the causes and functional implications of age-related changes in sleep architecture.Kevin R PetersLaura B RayStuart FogelValerie SmithCarlyle T SmithPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 9, Iss 3, p e91047 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Kevin R Peters Laura B Ray Stuart Fogel Valerie Smith Carlyle T Smith Age differences in the variability and distribution of sleep spindle and rapid eye movement densities.
description	The present study had two main objectives. The first objective was to compare the sleep architecture of young and older adults, with an emphasis on sleep spindle density and REM density. The second objective was to examine two aspects of age differences that have not been considered in previous studies: age differences in the variability of sleep measures as well as the magnitude of age differences in phasic events across the distribution of values (i.e., at each decile rather than a single measure of location such as the mean or median. A total of 24 young (mean age=20.75 ± 1.78 years) and 24 older (mean age=71.17 ± 6.15 years) adults underwent in-home polysomnography. Whole-night spindle density was significantly higher in young adults than older adults. The two age groups did not differ significantly in whole-night REM density, although significant increases in REM density across the night were observed in both age groups. These results suggest that spindle density is more affected by age than REM density. Although age differences were observed in the degree of absolute variability (older adults had significantly larger variances than young adults for sleep efficiency and time spent awake after sleep onset), a similar pattern was also observed within the two age groups: the four sleep measures with the lowest degrees of relative variability were the same and included time spent in REM and Stage 2 sleep, total sleep time, and sleep efficiency. The distributional analysis of age differences in sleep spindle density revealed that the largest age differences were initially observed in the middle of the distributions, but as the night progressed, they were seen at the upper end of the distributions. The results reported here have potential implications for the causes and functional implications of age-related changes in sleep architecture.
format	article
author	Kevin R Peters Laura B Ray Stuart Fogel Valerie Smith Carlyle T Smith
author_facet	Kevin R Peters Laura B Ray Stuart Fogel Valerie Smith Carlyle T Smith
author_sort	Kevin R Peters
title	Age differences in the variability and distribution of sleep spindle and rapid eye movement densities.
title_short	Age differences in the variability and distribution of sleep spindle and rapid eye movement densities.
title_full	Age differences in the variability and distribution of sleep spindle and rapid eye movement densities.
title_fullStr	Age differences in the variability and distribution of sleep spindle and rapid eye movement densities.
title_full_unstemmed	Age differences in the variability and distribution of sleep spindle and rapid eye movement densities.
title_sort	age differences in the variability and distribution of sleep spindle and rapid eye movement densities.
publisher	Public Library of Science (PLoS)
publishDate	2014
url	https://doaj.org/article/50e5773d817e45fb94a50b91e8bc6974
work_keys_str_mv	AT kevinrpeters agedifferencesinthevariabilityanddistributionofsleepspindleandrapideyemovementdensities AT laurabray agedifferencesinthevariabilityanddistributionofsleepspindleandrapideyemovementdensities AT stuartfogel agedifferencesinthevariabilityanddistributionofsleepspindleandrapideyemovementdensities AT valeriesmith agedifferencesinthevariabilityanddistributionofsleepspindleandrapideyemovementdensities AT carlyletsmith agedifferencesinthevariabilityanddistributionofsleepspindleandrapideyemovementdensities
_version_	1718421738910384128

Age differences in the variability and distribution of sleep spindle and rapid eye movement densities.

Ejemplares similares