Time-frequency parameters of heart-rate variability
| Autor: | Martens Wlj, Joke H.M. Tulen, H.G. van Steenis |
|---|---|
| Přispěvatelé: | Psychiatry |
| Rok vydání: | 2002 |
| Předmět: |
Adult
Male Supine position Rest Posture Biomedical Engineering Cardiovascular control Orthostatic vital signs Electrocardiography Control theory Heart Rate medicine Supine Position Heart rate variability Homeostasis Humans Postural Balance Mathematics Aged Stochastic Processes Models Statistical medicine.diagnostic_test Healthy subjects Models Cardiovascular Reproducibility of Results Signal Processing Computer-Assisted General Medicine Middle Aged Time–frequency analysis Irregular periods medicine.symptom Algorithms |
| Zdroj: | IEEE Engineering in Medicine and Biology Magazine, 21(4), 46-58. Institute of Electrical and Electronics Engineers Inc. |
| ISSN: | 0739-5175 |
| Popis: | We have evaluated a new method to compute time-frequency parameters from cardiovascular time series. Apart from calculating the IA and the IF, characteristics of the oscillatory and irregular periods can be quantified that may be relevant to further unravel the situational- and state-dependent dynamics of homeostatic cardiovascular control processes. As a first approach, the method was applied to describe changes in time-frequency parameters and in the characteristics of the oscillatory and irregular periods from supine to standing posture, under steady-state conditions in healthy subjects. The parameters and characteristics discriminated differentially between supine rest and orthostatic challenge. Furthermore, the method can be applied to other cardiovascular time series provided they are monocomponent. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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