Assessment of electroencephalographic functional connectivity in term and preterm neonates

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Publication Details

Author list: Pereda E
Publisher: Elsevier: 12 months
Publication year: 2011
Volume number: 122
Issue number: 4
Start page: 696
End page: 702
Number of pages: 7
ISSN: 1388-2457
Languages: English-Great Britain (EN-GB)



study how functional connectivity of neonate EEG during sleep is
assessed by different interdependence indices and to analyze its
dependence on conceptional (CA), gestational (GA) and/or chronological
age (CRA).


data from eight cortical regions were recorded during active (AS) and
quiet sleep (QS) in three groups of seven neonates each: preterm (PT;
GA: 33-34 weeks; CA: 39-40 weeks), junior-term (JT; GA: 38-39 weeks; CA:
39-40 weeks) and senior-term neonates (ST; GA: 38-39 weeks; CA: 44-45
weeks). EEG functional connectivity was assessed by means of the
coherence function (its magnitude (MSC) and its imaginary part (IMC))
and a measure of phase synchronization called phase lag index (PLI).


connectivity: (a) during AS in the beta band, the MSC of the ST group
was greater than that of the PT group for the temporal region; (b)
during QS in the delta band, both PLI and IMC of the ST group were
different to those of the PT group for the frontopolar and central
regions, whereas ST-JT differences were only found for PLI.
Intra-hemispheric connectivity: (a) during AS in the beta band the MSC
of the ST group was greater than that of the PT group for the left
frontopolar-centrotemporal and right occipital-centrotemporal regions;
(b) during QS in the beta band, both IMC and PLI were different for the
JT group than for the PT and the ST groups for the right and left
occipital-centrotemporal regions.


inter- and intra-hemispheric functional connectivity in neonates during
sleep changes with the CA and CRA in delta and beta bands.


neonate's brain development during the first weeks of life can be
traced from changes in the characteristics of EEG functional


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Last updated on 2019-13-08 at 00:45