On the spatio-temporal organisation of quadratic phase-couplings in 'tracé alternant' EEG pattern in full-term newborns

Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology
Herbert WitteT Suesse

Abstract

The time courses of quadratic phase-coupling (QPC) of electroencephalographic burst and interburst patterns of the 'trace alternant' (TA) in full-term newborns have been quantified. Using the Gabor expansion, a fast Fourier transformation based method, biamplitude, bicoherence and phase-bicoherence time courses of both burst and interburst patterns have been determined (common average reference EEG recordings). With a frequency resolution of 0.25 Hz and a frequency grid of 1-1.5 <==> 3.5-4.5 Hz (region-of-interest), a number of 15 frequency pairs result. These pairs have been investigated. The burst and the interburst patterns are characterized by temporally and topographically different QPC profiles. All differences are dominant at the electrode Fp1 followed by Fp2. There is a significant difference (combined multiple and global test strategy) in the QPC characteristics between both patterns within the time period from 0.75 to 1.5 s after the pattern onset at electrode Fp1. The maximal QPC in burst patterns (especially at Fp1) can be observed during this time period. In contrast to this finding, maximal QPC in interburst patterns (at Fp1) are reached immediately after the onset and at 3 s. Summarising all findings, a QPC-rhyth...Continue Reading

References

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Citations

Jul 25, 2009·Journal of Computational Neuroscience·Huixia He, David J Thomson
Mar 23, 2013·Annals of Biomedical Engineering·N J StevensonG B Boylan
Oct 29, 2009·Neuroscience Letters·Gert PfurtschellerChrista Neuper
Aug 7, 2010·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·H WitteL Leistritz
Oct 11, 2019·Human Brain Mapping·Mina NourhashemiFabrice Wallois
Nov 10, 2020·Neurophysiologie clinique = Clinical neurophysiology·Fabrice WalloisSahar Moghimi

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