title: Non-linear asymmetric interdependencies in the electroencephalogram of healthy term neonates during sleep.
abstract: The multichannel electroencephalograph (EEG) of six healthy term neonates was recorded during awake as well as during active and quiet sleep. The existence and nature of the interdependencies among the different brain areas were studied by means of a multivariate variant of the surrogate data method. Such interdependencies were then quantified by using the coherence function and a newly developed non-linear index. The results showed that during quiet sleep these interdependencies were mostly non-linear, asymmetric and greater than those found during both awake and active sleep. We conclude that the index might be useful to define patterns of EEG interdependencies in healthy neonates, thereby allowing the early detection of brain dysfunctions.
authors.affiliation: Department of Basic Physics, University of La Laguna, Tenerife, Spain.
authors.forename: Ernesto
authors.initials: E
authors.lastname: Pereda
authors.forename: Soledad
authors.initials: S
authors.lastname: Mañas
authors.forename: Luis
authors.initials: L
authors.lastname: De Vera
authors.forename: José M
authors.initials: JM
authors.lastname: Garrido
authors.forename: Santiago
authors.initials: S
authors.lastname: López
authors.forename: Julián J
authors.initials: JJ
authors.lastname: González
mesh_terms: D001931:Brain Mapping; D004569:Electroencephalography; D006801:Humans; D007231:Infant, Newborn / Q000502:physiology*; D012890:Sleep / Q000502:physiology*; D014851:Wakefulness