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Remote heart rate detection without body-attached probes is a promising technology for health care, monitoring of elderly people, emergency, and security. In this paper, we use a continuous wave (CW) microwave Doppler radar. It is important to eliminate the effect of body movement that is irrelevant to heartbeat such as respiration. In general, the displacements of them are larger than those of heartbeat...
In this article we investigate the presence of gastric motility (GM) oscillation in the lower frequency range of photoplethysmography (PPG) signal. The objective of this article is to analyze the lower frequency oscillations of PPG signal using the novel autoregressive (AR) model and studying the presence of gastric motility (GM) rhythm in finger PPG. We acquired finger PPG and GM (measured using...
In this paper, based on the ideas of image texture analysis and motion tracking, we present a new method for left ventricular (LV) strain analysis from cine magnetic resonance images(MRI). First, the marking points are extracted with the Harris corner detector on or close to the endocardium and epicardium. Second, using the tree-structured wavelet algorithm, the corresponding marking points are matched...
Fitness centers offer a series of machines that can be used by participants independently from their training status. CardiowaveTM (CW) is a new device (Technogym R , Italy) that works simultaneously on three axes with a sliding movement of the lower limbs, activating different muscle groups according to the position maintained (i.e., Basic, B; Intermediate, I; Advanced, A; Free style, F). Thus, the...
The heart's mechanical activity while pumping out blood causes the vibration of physical and the object connecting with physical. The vibration is rhythmically with the heart rate and record as ballistocardiogram (BCG) on the spinal axis of the body. It is able to know humanpsilas heart rate by measuring the vibration. BCG is weak non-stationary random signal and contains a lot of noise caused by...
The seriousness of the obstructive sleep apnea/hypopnea syndrome is measured by the apnea-hypopnea index (AHI), the number of sleep apneas and hypopneas over the total sleep time (TST). Cardiorespiratory signals are used to detect respiratory events while the TST is usually assessed by the analysis of electroencephalogram traces in polysomnography (PSG) or wrist actigraphy trace in portable monitoring...
This study developed an analytical method for estimating and presenting the rating of perceived exertion (RPE) by using fluctuation analysis of largest Lyapunov exponent and heart rate variability. The method was applied to method to analyze a series of experiments conducted in various conditions including the use of a variety of driving seats to observing exertion and fatigue processes during a longer...
In this paper, we classified ballistocardiogram (BCG) signals for healthy and unhealthy persons using QuickLearn (QL), a novel supervised on-line learning algorithm, and the biorthogonal spline wavelets. At the first stage, the mapping level, the input data are represented to the multi input-single output mapping function (MF) with fixed weights during a training phase. We can select any kind of mathematical...
In this study, we applied biorthogonal wavelets to extract essential features of the ballistocardiogram (BCG) signal and to classify them using a novel neural network so-called supervised fuzzy adaptive resonance theory (SF-ART). SF-ART has two stages. At first stage, pre-classification level, the input data is clustered roughly to arbitrary (M) classes using self-organized fuzzy ART tuned for fast...
In this study, we applied biorthogonal wavelets to extract essential features of the ballistocardiogram (BCG) signal and to classify them using a novel neural network so-called supervised fuzzy adaptive resonance theory (SF-ART). SF-ART has two stages. At first stage, pre-classification level, the input data is clustered roughly to arbitrary (M) classes using self-organized fuzzy ART tuned for fast...
Cluster headache is a severe form of the primary headache syndromes, yet the basic pathology is unknown. We examined cardiac autonomic function in 14 subjects with Cluster Headache (CH) during headache period and 11 subjects in "quiescent" period (QP) versus a control group (C ,n=9). Subjects rested supine for 30 min before performing: Isometric Handgrip (HG) and Active Change in Posture...
Tagged magnetic resonance imaging (MRI) is currently the reference MR modality for myocardial motion and strain analysis. Mutual information (MI) based non rigid registration has proven to be an accurate method to retrieve cardiac deformation fields. However, this technique ignores high frequency information in tags. In a previous work this information was included by using feature vectors formed...
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