Aging of human alpha rhythm.

Détails

ID Serval
serval:BIB_46D2B6DF3921
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Aging of human alpha rhythm.
Périodique
Neurobiology of aging
Auteur(s)
Knyazeva M.G., Barzegaran E., Vildavski V.Y., Demonet J.F.
ISSN
1558-1497 (Electronic)
ISSN-L
0197-4580
Statut éditorial
Publié
Date de publication
09/2018
Peer-reviewed
Oui
Volume
69
Pages
261-273
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Résumé
Alpha rhythm (AR) changes are the most pronounced electroencephalogram phenomenon in the aging brain. We analyzed them based on the inherent AR structure obtained by parallel factor analysis decomposition in the cortical source space. AR showed a stable multicomponent structure in 78% of sixty 20- to 81-year-old healthy adults. Typically, it consists of 2 components. The distribution of the higher frequency occipito-parietal component widens with age, with its maximum moving from BA18/19 to BA37. The low-frequency component originating from the occipito-temporal regions in young adults also moves anteriorly with age, while maintaining its maximum within BA37. Both components slow down by 1 Hz over the adult lifespan. The multicomponent AR is more common in younger subjects, whereas a single-component AR in older subjects. This uneven occurrence as well as the increasing spatial and frequency overlaps between components suggest transformation of the multicomponent AR into the single-component AR with age. A detailed knowledge of AR component structure would be useful to monitor age-related neurodegenerative processes in humans.
Mots-clé
Adult, Aged, Aged, 80 and over, Aging, Alpha Rhythm, Brain/physiology, Data Interpretation, Statistical, Female, Humans, Male, Middle Aged, Signal Processing, Computer-Assisted, Young Adult, Alpha rhythm slowing, Component structure of alpha rhythm, Oscillations, PARAFAC, Resting state, Source localization
Pubmed
Web of science
Création de la notice
29/06/2018 17:34
Dernière modification de la notice
27/05/2019 6:11
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