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Heart rate (HR) is a biomedical parameter, which contains information about the autonomic nervous system activity, and thus, it can predict health related events. Non — contact acquisition of the HR can be of interest not only for clinical practice situations but also for more commercial oriented usage. In this paper, the estimation of HR from a video sequence acquired with a smartphone camera (non...
In this work we investigate an image based algorithm as a reliablemethod to perceive the eye movement and offer new possibilities for the activity recognition. In order to test the effectiveness of the algorithm, the eye movement data was recorded using an electrooculography system. Different patterns of eye movement were analyzed within the conducted study. Three different lighting and three activities...
The interdependences between the maternal heart rate (mHR), the electrohysterogram (EHG) and the fetal heart rate (fHR) are of great interest, indicating the well developing of pregnancy, and they were initially analyzed in the current study by using the spectral coherence. The mHR and fHR were obtained by applying independent component analysis (ICA)and event-synchronous canceller (ESC) algorithms...
The electrical activity of the uterus, i.e. the electrohysterogram (EHG), is one of the most prominent tool for preterm labour. There is no standard acquisition set up and often the EHG is corrupted with different types of noise: maternal and fetal electrocardiogram (mECG, fECG), electrical activity of the skeletal muscles, movement artifacts, power line interference (PLI) etc. Moreover, some of these...
The acquisition of the fetal electrocardiogram (fECG) signal via abdominal electrodes placed on the maternal abdomen represents an alternative method to the one used currently in clinical practice. It has the advantage that is noninvasive and can be used for long term monitoring of the fetal wellbeing. However, the limit is the low signal to noise ratio (SNR). The abdominal signal (ADS) recorded with...
The fetal heart rate (FHR) is a fundamental tool for clinical monitoring, when investigating the wellbeing of the fetus. The detection of the QRS complex of the fetal electrocardiogram using the abdominal signal enables the non-invasive evaluation of the FHR. There are many clinical causes for FHR variability, but a slight variance indicates a good evolution of the pregnancy. The current study evaluates...
The field of electrocardiography (ECG) has been in existence for over a century, but the analysis of fetal ECGs is still in its infancy. This is, partly due to a lack of availability of elegant standard databases, partly due to the relatively low signal to noise ratio of the fetal ECG compared to maternal ECG. In this paper we applied recurrence plot analysis method for noninvasively recorded abdominal...
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