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Spectral analysis of burst periods in EEG from healthy and post-asphyctic full-term neonates
Department of Clinical Neurophysiology, Institute of Neuroscience and Physiology, Sahlgrenska University Hospital, Göteborg, Sweden.
School of Engineering, University of Borås.
Department of Pediatrics, Queen Silvia Children's Hospital, Sahlgrenska University Hospital-Östra.
School of Engineering, University of Borås.
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2004 (English)In: Clinical Neurophysiology, ISSN 1388-2457, E-ISSN 1872-8952, Vol. 115, no 11, 2461-2466 p.Article in journal (Refereed) Published
Abstract [en]

OBJECTIVE: To investigate whether the periodic EEG patterns seen in healthy and sick full term neonates (trace alternant and burst suppression, respectively) have different frequency characteristics.

METHODS: Burst episodes were selected from the EEGs of 9 healthy and 9 post-asphyctic full-term neonates and subjected to power spectrum analysis. Powers in two bands were estimated; 0-4 and 4-30 Hz, designated low- and high-frequency activity, respectively (LFA, HFA). The spectral edge frequency (SEF) was also assessed.

RESULTS: In bursts, the LFA power was lower in periods of burst suppression as compared to those of trace alternant. The parameter that best discriminated between the groups was the relative amount of low- and high-frequency activity. The SEF parameter had a low sensitivity to the group differences. In healthy neonates, the LFA power was higher over the posterior right as compared to the posterior left region.

CONCLUSIONS: Spectral power of low frequencies differs significantly between the burst episodes of healthy and sick neonates.

SIGNIFICANCE: These results can be used when monitoring cerebral function in neonates.

Place, publisher, year, edition, pages
2004. Vol. 115, no 11, 2461-2466 p.
Keyword [en]
EEG, neonate, spectral analysis, asphyxia
National Category
Neurology
Identifiers
URN: urn:nbn:se:kth:diva-75352DOI: 10.1016/j.clinph.2004.05.019ISI: 000224720200004PubMedID: 15465433OAI: oai:DiVA.org:kth-75352DiVA: diva2:491045
Note
QC 20120206Available from: 2012-02-06 Created: 2012-02-05 Last updated: 2017-12-08Bibliographically approved

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