Browsing by Author "Colditz P."
Now showing items 1-13 of 13
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Accelerometer-based fetal movement detection
Mesbah, M.; Khlif, M.S.; East, C.; Smeathers, J; Colditz, P.; Boashash, B.... more authors ... less authors ( IEEE , 2011 , Conference Paper)Monitoring fetal wellbeing is a compelling problem in modern obstetrics. Clinicians have become increasingly aware of the link between fetal activity (movement), well-being, and later developmental outcome. We have recently ... -
Analysis of the time-varying cortical neural connectivity in the newborn EEG: A time-frequency approach
Omidvarnia, A; Mesbah, M; O'Toole, J.M.; Colditz, P; Boashash, B ( IEEE , 2011 , Conference Paper)Relationships between cortical neural recordings as a representation of functional connectivity between cortical brain regions were quantified using different time-frequency criteria. Among these, Partial Directed Coherence ... -
Detecting Fetal Movements Using Non-Invasive Accelerometers: A Preliminary Analysis
Girier, T.; O'Toole, J.; Mesbah, M.; Boashash, B.; Clough, I.; Wilson, S.; Fuentes, M.; Callan, S.; East, C.; Colditz, P.... more authors ... less authors ( IEEE , 2010 , Article)Monitoring fetal movement is important to assess fetal health. Standard clinical fetal monitoring technologies include ultrasound imaging and cardiotocography. Both have limited prognostic value and require significant ... -
Detection of neonatal seizure using multiple filters
Khlif, M.S.; Mesbah, M.; Boashash, Boualem; Colditz, P. ( IEEE , 2010 , Conference Paper)It is often impossible to accurately differentiate between seizure and non-seizure related activities in irifants based on clinical manifestations alone. The electroencephalogram (EEG) is therefore the best tool available ... -
EEG amplitude and correlation spatial decay analysis for neonatal head modelling
Odabaee M.; Layeghy S.; Mesbah M.; Azemi G.; Boashash B.; Colditz P.; Vanhatalo S.... more authors ... less authors (2012 , Conference Paper)There is an increased need to better understand the relation between brain structures and functions in newborns by using EEG source localization techniques. This requires a realistic head model that would take into account ... -
Effective implementation of time–frequency matched filter with adapted pre and postprocessing for data-dependent detection of newborn seizures
Khlif, M; Colditz, P; Boashash, B ( Elsevier , 2013 , Article)Neonatal EEG seizures often manifest as nonstationary and multicomponent signals, necessitating analysis in the time–frequency (TF) domain. This paper presents a novel neonatal seizure detector based on effective implementation ... -
Generalised phase synchrony within multivariate signals: An emerging concept in time-frequency analysis
Omidvarnia A.; Boashash B.; Azemi G.; Colditz P.; Vanhatalo S. (2012 , Conference Paper)This paper introduces the notion of the instantaneous frequency (IF) based generalized phase synchrony in time-frequency analysis based on the concept of cointegration. This phase synchrony is then quantified by investigating ... -
Generalized Mean Phase Coherence for asynchrony abnormality detection in multichannel newborn EEG
Omidvarnia A.; Vanhatalo S.; Mesbah M.; Azemi G.; Colditz P.; Boashash B.... more authors ... less authors (2012 , Conference Paper)Inter-hemispheric asynchrony within the multichannel recordings of newborn EEG is associated with abnormal functionality of the newborn brain. Mean Phase Coherence (MPC) as a bivariate phase synchrony measure is widely ... -
Kalman filter-based time-varying cortical connectivity analysis of newborn EEG
Omidvarnia, A.H.; Mesbah, M.; Khlif, M.S.; O'Toole, J.M.; Colditz, P.; Boashash, B.... more authors ... less authors ( IEEE , 2011 , Conference Paper)Multivariate Granger causality in the timefrequency domain as a representation of time-varying cortical connectivity in the brain has been investigated for the adult case. This is, however, not the case in newborns as ... -
Non-invasivemonitoring of fetal movements using time-frequency features of accelerometry
Layeghy S.; Azemi G.; Colditz P.; Boashash B. ( Institute of Electrical and Electronics Engineers Inc. , 2014 , Conference Paper)This paper presents a time-frequency approach for fetal movement monitoring which is based on the instantaneous amplitude (IA) and instantaneous frequency (IF) of signals collected using 3axial accelerometers placed over ... -
Orthogonalized partial directed coherence for functional connectivity analysis of newborn EEG
Omidvarnia A.H.; Azemi G.; Boashash B.; O'Toole J.M.; Colditz P.; Vanhatalo S.... more authors ... less authors (2012 , Conference Paper)The aim of this study is to develop a time-frequency method and test its applicability to investigating directional cortical connectivity in the newborn brain considering the effect of volume conduction. We modified ... -
Time-Frequency Characterization of Tri-Axial Accelerometer Data for Fetal Movement Detection
Khlif, M.S.; Boashash, B; Layeghy, S; Ben-Jabeur, T; Mesbah, M; East, C; Colditz, P... more authors ... less authors ( IEEE , 2011 , Conference Paper)Monitoring fetal wellbeing is a significant problem in modern obstetrics. Clinicians have become increasingly aware of the link between fetal activity and its well-being. Using data acquired by accelerometry sensors, we ... -
Time-frequency methodologies in neurosciences
Boashash, B.; Stevenson, N.J.; Rankine, L.J.; Stevenson, N.J.; Azemi, G.; Sejdić, E.; Aviyente, S.; Akan, A.; Mert, A.; Dong, S.; Omidvarnia, A.; Zarjam, P.; O'Toole, J.M.; Colditz, P.... more authors ... less authors ( Elsevier Inc. , 2016 , Book chapter)This chapter presents a number of time-frequency (t,f) techniques that can provide advanced solutions to several problems in neuro-sciences with focus on the monitoring of brain abnormalities using EEG and other physiological ...