نتایج جستجو برای: heart rate variability signal

تعداد نتایج: 1762530  

ژورنال: پژوهش در پزشکی 2012
زالی, علیرضا , عارفیان, نور محمد ,

Abstract Many studies have been conducted on heart rate variability. Variability in the heart signal of two sequential beats is called heart rate variability (HRV). Short- and long- term variability reflects autonomic nervous system function, so that increased or decreased heart rate variability (HRV) is an indicator of human health. So, the analysis of these changes can predict sudden death...

ژورنال: پژوهش در پزشکی 2012
زالی, علیرضا , عارفیان, نور محمد ,

Abstract Many studies have been conducted on heart rate variability. Variability in the heart signal of two sequential beats is called heart rate variability (HRV). Short- and long- term variability reflects autonomic nervous system function, so that increased or decreased heart rate variability (HRV) is an indicator of human health. So, the analysis of these changes can predict sudden death...

Journal: :journal of medical signals and sensors 0
maryam mohebbi hassan ghassemian

this paper aims to propose an effective paroxysmal atrial fibrillation (paf) predictor which is based on the analysis of the heart rate variability (hrv) signal. predicting the onset of paf, based on non-invasive techniques, is clinically important and can be invaluable in order to avoid useless therapeutic intervention and to minimize the risks for the patients. this method consists of four st...

Journal: :BioMedical Engineering OnLine 2017

Journal: :Frontiers in Digital Health 2021

Journal: :journal of sleep sciences 0
omid aminian occupational sleep research center, baharloo hospital, tehran university of medical sciences, tehran, iran narges sadat shams-hosseini center for research on occupational diseases, tehran university of medical sciences, tehran, iran khosro sadeghniiat-haghighi occupational sleep research center, baharloo hospital, tehran university of medical sciences, tehran, iran

background and objective: obstructive sleep apnea syndrome (osas) is a prevalent disease in adults. limited evidence regarding the effect of severity of sleep apnea and depression on heart rate variability (hrv) indices exists. hence, we decided to focus on the association between hrv and severity of osas based on depression score. materials and methods: a total of 193 patients with confirmed o...

Journal: :international journal of advanced biological and biomedical research 2013
shweta agarwal a.k. wadhwani

in this paper the main objective is to quantify and compare the instantaneous value of heart rate for normal breathing patterns during meditation and non meditation conditions. this paper involves analysis of variance (anova) technique for the analysis of the heart rate variability patterns during the meditative and non meditative states. the analysis is divided into three stages i.e. data acqu...

Journal: :iranian journal of medical physics 0
ateke goshvarpour computational neuroscience laboratory, department of biomedical engineering, faculty of electrical engineering, sahand university of technology, tabriz, iran ataollah abbasi computational neuroscience laboratory, department of biomedical engineering, faculty of electrical engineering, sahand university of technology, tabriz, iran atefeh goshvarpour computational neuroscience laboratory, department of biomedical engineering, faculty of electrical engineering, sahand university of technology, tabriz, iran

introduction automatic human emotion recognition is one of the most interesting topics in the field of affective computing. however, development of a reliable approach with a reasonable recognition rate is a challenging task. the main objective of the present study was to propose a robust method for discrimination of emotional responses thorough examination of heart rate variability (hrv). in t...

2017
Chang Yan Peng Li Lizhen Ji Lianke Yao Chandan Karmakar Changchun Liu

BACKGROUND Heart rate fluctuates beat-by-beat asymmetrically which is known as heart rate asymmetry (HRA). It is challenging to assess HRA robustly based on short-term heartbeat interval series. METHOD An area index (AI) was developed that combines the distance and phase angle information of points in the Poincaré plot. To test its performance, the AI was used to classify subjects with: (i) a...

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