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Coupling analysis of transient cardiovascular dynamics


, : Coupling analysis of transient cardiovascular dynamics. Biomedizinische Technik. Biomedical Engineering 58(2): 131-139

The analysis of effects from coupling in and between systems is important in data-driven investigations as practiced in many scientific fields. It allows deeper insights into the mechanisms of interaction emerging among individual smaller systems when forming complex systems as in the human circulatory system. For systems featuring various regimes, usually only the epochs before and after a transition between different regimes are analyzed, although relevant information might be hidden within these transitions. Transient behavior of cardiovascular variables may emerge, on the one hand, from the recovery of the system after a severe disturbance or, on the other hand, from adaptive behavior throughout changes of states. It contains important information about the processes involved and the relations between state variables such as heart rate, blood pressure, and respiration. Therefore, we apply an ensemble approach to extend the method of symbolic coupling traces to time-variant coupling analysis. These new ensemble symbolic coupling traces are capable of determining coupling direction, strength, and time offset τ from transient dynamics in multivariate cardiovascular data. We use this method to analyze data recorded during an orthostatic test to reveal a transient structure that cannot be detected by classic methods.

US$19.90

PMID: 23446924

DOI: 10.1515/bmt-2012-0030


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Mackor, A.J.; Van-Bijsterveld, O.P., 1988: Tear function parameters in keratoconjunctivitis sicca with and without association with sjogren's syndrome. In a group of patients with keratoconjunctivitis sicca (KCS) associated with Sjogren's syndrome (SJ) a significant decrease in tear fluid lactoferrin concentration and tear film break-up time was demonstrated in comparison with a matched grou...

Hanset, R., 1966: The inheritability of the duration of gestation in the cattle breed of middle and high Belgium. The causes of variation of the period of gestation have been studied for the breed of Middle and High Belgium. The average period of gestation, for this breed, is of 281.9 days, with a standard deviation of 6.9 days. The difference, due to sex, is...

Warhadpande, R.M.; Dutta, K.K.; Mahanta, J.D.; Hazarika, M., 2010: Effect of incorporation of chicken blood plasma on physico-chemical properties of cakes. Level of inclusion of chicken blood plasma (CBP) in the preparation of cakes was assessed in respect of certain physico-chemical quality traits. The cakes were prepared with and without added flavour. In each group, seven cakes were prepared from...

Stocker G.C., 1981: Conservation of plants in northern australia. Proceedings of the International Botanical Congress 13: 215

Nontasut, P.; Waikagul, J.; Yamput, S.; Muennoo, C., 2001: Efficacy of multiple dose mebendazole against trichuriasis in Thai and Karen patients. Treatment of trichuriasis with mebendazole 500 mg for three days, and 100 mg twice daily for three days, yielded cure rates of 93.9 and 88.9% in Thai patients, while the cure rates in Karen patients were 96.2 and 95.5% respectively. The total numb...

Cook, H.H.; Soni, N.N.; Montgonery, J.C., 1971: The effects of pulsed, high-frequency radio waves on the rate of osteogenesis in the healing of extraction wounds in dogs. Oral Surgery, Oral Medicine, and Oral Pathology 32(6): 1008-1016

Chern W.H.; Dauterman W.C., 1983: The metabolism and excretion of 1 naphthol 1 naphthyl beta d glucuronide and 1 naphthyl beta d glucoside in the mouse. Radiolabeled 1-naphthyl-.beta.-D-glucuronide and 1-naphthyl-.beta.-D-glucoside were synthesized from 1-[14C]naphthol. The fate of the 3 compounds in male mice was studied. After an oral dose of 45 mg/kg 1-naphthol, 100 mg/kg 1-naphthyl glucuronide...

Botwinick, G.; Bell, D.; Johnson, R.L.; Sell, R.L.; Friedman, L.B.; Dodds, S.; Shaw, K.; Martinez, J.; Siciliano, C.; Walker, L.E.; Sotheran, J.L., 2003: Making waves: systems change on behalf of youth with HIV/AIDS. To document the effects of five Special Projects of National Significance (SPNS), funded by the Health Resources and Services Administration (HRSA), on HIV care, related service systems, policy, planning, and funding for youth with HIV/AIDS. Liter...

Auer, J., 1948: The development of the human pulmonary vein and its major variations. In a series of human embryos from 2-7 mm. crown rump length transverse sections stained with haematoxylin-eosin have been studied. As a continuation of the author's studies in rat and rabbit embryos it has now been revealed that the dorsal wa...

Rechardt L.; Julien J P.; Vilja P.; Liesi P., 1986: In situ hybridization by using biotin labeled complementary probe to demonstrate 68000 neurofilament nf protein transcript. Acta Histochemica et Cytochemica 19(3): 403