@article{HeringerWaltherMoreiraWesseletal.2005, author = {Heringer-Walther, Silvia and Moreira, M. C. V. and Wessel, Niels and Saliba, J. L. and Silvia-Barra, J. and Pena, J. L. B. and Becker, S. and Siems, W. E. and Schultheiss, H. P. and Walther, T.}, title = {Brain natriuretic peptide predicts survival in Chagas' disease more effectively than atrial natriuretic peptide}, issn = {1355-6037}, year = {2005}, language = {en} } @article{CarvajalWesselVallverduetal.2005, author = {Carvajal, R. and Wessel, Niels and Vallverdu, M. and Caminal, P. and Voss, Andreas}, title = {Correlation dimension analysis of heart rate variability in patients with dilated cardiomyopathy}, issn = {0169-2607}, year = {2005}, abstract = {A correlation dimension analysis of heart rate variability (HRV) was applied to a group of 55 patients with dilated cardiomyopathy (DCM) and 55 healthy subjects as controls. The 24-h RR time series for each subject was divided into segments of 10,000 beats to determine the correlation dimension (CD) per segment. A study of the influence of the time delay (tag) in the calculation of CD was performed. Good discrimination between both groups (p < 0.005) was obtained with tag values of 5 or greater. CD values of DCM patients (8.4 ± 1.9) were significantly lower than CD values for controls (9.5 ± 1.9). An analysis of CD values of HRV showed that for healthy people, CD night values (10.6 ± 1.8) were significant greater than CD day values (9.2 ± 1.9), revealing a circadian rhythm. In DCM patients, this circadian rhythm was lost and there were no differences between CD values in day (8.8 ± 2.4) and night (8.9 ± 2. 1). © 2005 Elsevier Ireland Ltd. All rights reserved}, language = {en} } @phdthesis{Wessel2005, author = {Wessel, Niels}, title = {Data analysis and modeling of the cardiovascular system}, address = {Potsdam}, pages = {Getr. Z{\"a}hlung : graph. Darst.}, year = {2005}, language = {en} } @article{BittmannGutschowLutheretal.2005, author = {Bittmann, Frank and Gutschow, Stephan and Luther, Sven and Wessel, Niels and Kurths, J{\"u}rgen}, title = {On the functional relationship between postural motor balance and performance at school}, year = {2005}, abstract = {In integrated medical considerations of the biological human system, both intellectual and motor performances in a similar manner are considered as a result of the function of the nervous system. Consequently, universal minimal dysfunctions of the central nervous system may lead to both intellectual and physical anomalies. Therefore, this study tests the hypothesis that there is a connection between the balance ability as a motor parameter and school success as an intellectual parameter. A postural measuring system based on the force-moment sensor technique was used to record the postural balance regulation of 773 children (circle divide 11 +/- 1 years). The school achievement of each child was determined by school grades. Data analysis was performed by linear as well as by nonlinear time series analyses. There are highly significant differences in balance regulation between good and poor pupils recognized by several linear and nonlinear parameters. Good pupils could be discriminated from pupils with bad results in learning to 80 \%. The results support the hypothesis mentioned above. One possible explanation for the poor regulation of balance in bad learners could be a deficit in the neural maturity. In future, further developments will be targeted on higher discrimination levels, possibly in order to predict school success. On the other hand, the effects of special movement exercises on the neural development in childhood will be the focus in our further work}, language = {en} }