Zobrazeno 1 - 10
of 37
pro vyhledávání: '"H.G. van Steenis"'
Publikováno v:
Computer Methods & Programs in Biomedicine, 71, 211-224. Elsevier Ireland Ltd
The instantaneous frequency (IF) of cardiovascular time series is used to describe the time-varying spectral contents of the characteristic frequency bands that are of interest for psychophysiological and cardiovascular research. Four methods to comp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8fa9c17afbf438f662c510cd123eb2f2
https://doi.org/10.1016/S0169-2607(02)00113-X
https://doi.org/10.1016/S0169-2607(02)00113-X
Autor:
H.G. van Steenis, Joke H.M. Tulen
Publikováno v:
Computers and Biomedical Research. 29:174-193
Beat-to-beat fluctuations in cardiovascular time series comprise different frequency components which can be employed to describe autonomic regulatory processes. The Exponential Distribution (ED) is presented here as a specific time-frequency distrib
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ac1d38abbe887c2aed5672c91ac677d5
https://doi.org/10.1006/cbmr.1996.0015
https://doi.org/10.1006/cbmr.1996.0015
Autor:
A. J. Man In 'T Veld, Peter Moleman, H.G. van Steenis, F. M. L. Smeets, B. J. M. Van De Wetering, Joke H.M. Tulen
Publikováno v:
Journal of Cardiovascular Pharmacology. 22:112-119
Effects of four intravenous (i.v.) doses (0.25, 0.5, 1, and 2 micrograms/kg) of the alpha 2-adrenoceptor agonist clonidine (CLO) were studied in 7 normotensive male volunteers in a placebo-controlled double-blind randomized design to evaluate the rol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6cfd6c80792cb7e9fc42808ff5c5c58c
https://doi.org/10.1097/00005344-199307000-00018
https://doi.org/10.1097/00005344-199307000-00018
Autor:
Peter J. Blankestijn, F. Boomsma, A. J. Man In 'T Veld, Joke H.M. Tulen, H.G. van Steenis, Peter Moleman
Publikováno v:
Psychosomatic Medicine. 55:61-69
Psychological, cardiovascular, endocrine, and metabolic reactions to a sustained infusion of epinephrine (E) and norepinephrine (NE) were studied in 10 healthy male volunteers in a placebo-controlled randomized design. The subjects participated each
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::11987fad0534a6d07be7f8a160b90c2b
https://doi.org/10.1097/00006842-199301000-00011
https://doi.org/10.1097/00006842-199301000-00011
Publikováno v:
Psychopharmacology. 105:77-83
Dose-dependent effects of intravenously administered lorazepam on psychophysiological activity during rest and mental stress were studied in order to examine differential responses to doses which may induce anxiolysis or sedation. In a double-blind r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::afc1075092e5dd0229a5b60e8e7f4262
https://doi.org/10.1007/bf02316867
https://doi.org/10.1007/bf02316867
Autor:
Joke H.M. Tulen, H.G. van Steenis
Publikováno v:
Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society Volume 13: 1991.
Time-dependent beat-to-beat fluctuations in cardiovascular parameters can be studied by means of spectral analyses based on a nonequidistant sampling of the signals [1,2]. This method has been used to study variability in inter-beat interval length a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::153c9a29328ecc4ef77e92a257c99483
https://doi.org/10.1109/iembs.1991.684136
https://doi.org/10.1109/iembs.1991.684136
Publikováno v:
Proceedings of the First Joint BMES/EMBS Conference. 1999 IEEE Engineering in Medicine and Biology 21st Annual Conference and the 1999 Annual Fall Meeting of the Biomedical Engineering Society (Cat. No.99CH37015).
Describes a new method to quantify the time-varying spectral content of non-stationary cardiovascular time series by means of the instantaneous amplitude, frequency, and bandwidth. Though the described method is computational complex, it produces bet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc137902e8b36f2d63f0c13c99468a1a
https://doi.org/10.1109/iembs.1999.804164
https://doi.org/10.1109/iembs.1999.804164
Publikováno v:
IEEE Engineering in Medicine and Biology Magazine, 21(4), 46-58. Institute of Electrical and Electronics Engineers Inc.
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
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3ea0e52c1e95e9e3ff6af8cae29546eb
https://pubmed.ncbi.nlm.nih.gov/12222117
https://pubmed.ncbi.nlm.nih.gov/12222117
Publikováno v:
Medical Engineering & Physics, 16(5), 355-362. ELSEVIER SCI LTD
This paper compares two methods to estimate heart rate variability spectra i.e., the spectrum of counts and the instantaneous heart rate spectrum. Contrary to Fourier techniques based on equidistant sampling of the interbeat intervals, the spectrum o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6bb98f005d0efd4fbb232d72d4093557
https://pubmed.ncbi.nlm.nih.gov/7952673
https://pubmed.ncbi.nlm.nih.gov/7952673
Autor:
H.G. van Steenis, A. J. Man In 'T Veld, A. M. Van Roon, F. Boomsma, Peter J. Blankestijn, Peter Moleman, Joke H.M. Tulen
Publikováno v:
Journal of applied physiology (Bethesda, Md. : 1985). 76(5)
Spectral analysis of fluctuations in heart rate (HR) and arterial blood pressure (BP) during a 6-h infusion of epinephrine (15 ng.kg-1.min-1) or norepinephrine (30 ng.kg-1.min-1) in 10 normotensive males was used to analyze effects of peripheral symp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ed9564924eb522fc908e608e08d88f5d
https://pubmed.ncbi.nlm.nih.gov/8063650
https://pubmed.ncbi.nlm.nih.gov/8063650