Robust time-frequency analysis of newborn EEG seizure corrupted by impulsive artefacts

James Brotchie; Luke Rankine; Mostefa Mesbah; Paul Colditz; Boualem Boashash

doi:10.1109/IEMBS.2007.4352210

Robust time-frequency analysis of newborn EEG seizure corrupted by impulsive artefacts

Annu Int Conf IEEE Eng Med Biol Soc. 2007:2007:11-4. doi: 10.1109/IEMBS.2007.4352210.

Authors

James Brotchie¹, Luke Rankine, Mostefa Mesbah, Paul Colditz, Boualem Boashash

Affiliation

¹ Perinatal Research Centre, School of Medicine, University of Queensland, Royal Brisbane and Women's Hospital, Brisbane, Australia.

PMID: 18001876
DOI: 10.1109/IEMBS.2007.4352210

Abstract

The newborn EEG seizure is a nonstationary signal. The time-varying nature of the newborn EEG seizure can be characterized by time-frequency representations (TFRs) such as quadratic time-frequency distributions. The underlying time-frequency signatures of newborn EEG seizure, however, can be severely masked by short-time and high amplitude (STHA), or impulsive, artefacts. This type of artefact can be modelled as heavy-tailed noise. Robust time-frequency distributions (RTFDs) have been proposed as methods for TFRs which are robust to heavy-tailed noise. In this paper, we investigate the use of RTFDs for representing the underlying time-frequency characteristics of newborn EEG seizure in the presence of STHA artefacts.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Electroencephalography / methods*
Humans
Infant, Newborn / physiology*
Seizures / diagnosis*
Signal Processing, Computer-Assisted*
Statistical Distributions