University of Calgary

Aicko Yves Schumann

  

Office Location: Science B, Room 503

Mailing address:

Department of Physics and Astronomy

University of Calgary

SB605 - 2500 University Drive NW

Calgary, Alberta T2N 1N4

Phone: +1 403 210 7904

Cell:     +1 403 630 4025

from Germany: +49 33845 42369

e-mail: ay.schumann(at)ucalgary.ca
I have been a postdoc in the Complexity Science Group since February 2010.

 

My research interests include statistical physics, time series analysis, extreme value statistics, sleep research, and physiology.

Summer Projects for German Bachelor or Diploma Students financed by DAAD:
Summer 2012

The application deadline has passed and students were selected. I thank all applicants for their interest!

  1. DAAD RISE worldwide: Partial Mutual Information in Complex Networks Project Description CA-PH-1493
    Student: Patrick Kesper from Georg-August-University Göttingen
  2. DAAD RISE worldwide: Portable Recording Devices in Deep Brain Stimulation Research Project Description CA-PH-1499
    Student: Niklas Gerdes from Jacobs University Bremen
  3. DAAD PROMOS: Dynamical Functional Networks
    Student: Esther-Danielle Weil from Justus-Liebig University Gießen
Summer 2011
  1. DAAD PROMOS: Functional Networks During Sleep Project Description CA-PH-793
    Student: Patrick Wohlfahrt from Martin-Luther University Halle-Wittenberg
  2. DAAD RISE worldwide: Extreme Value Statistics in Sleep Recordings Project Description CA-PH-794
    Student: Julian Kranz from Technical University Karlsruhe
  3. DAAD RISE worldwide: A Portable Recording Device for Physiological Signals Project Description CA-PH-795
    Student: Antje Sophie Brückner from Martin-Luther University Halle-Wittenberg

Scientific Career:

2010 - current Postdoctorial Fellow at Complexity Science Group, Dept. Physics & Astronomy, University of Calgary, Canada
2005 - 2010 Ph.D. thesis "Fluctuations and Synchronization in Complex Physiological Systems" (summa cum laude, Martin-Luther Award for PhD with distinction), Martin-Luther University Halle-Wittenberg, Germany
2005 Researcher at Institute of Mathematics, University of Potsdam, Germany
2005 Researcher at Max-Planck Institute for Colloids and Interfaces, Golm, Germany
2004 Visiting scholar at Institute for Nonlinear Science, University of California San Diego (UCSD), USA
1998-2004 Study of Physics, Diploma thesis "Wavelet analysis of sediment data with respect to age-depths models" (very good), University of Potsdam, Germany
1997-1999 Study of Geoecology (up to Vordiplom), University of Potsdam, Germany

For more details, please consult my CV.

Publications:

Book :

  
Fluctuations and Synchronization in Complex Physiological Systems,
Logos Verlag Berlin, ISBN 978-3-8325-2756-3, pp. 245, 2011
(basically a remastered version of my PhD thesis, published through
"Excellence Initiative" of Logos Verlag Berlin for selected
"summa cum laude" dissertations in Germany )
The book deals with topics from cardiology and sleep physiology, an introduction to the physiology of the heart and to basic sleep physiology is given, although, the main focus of the book is physics and methodology. The analysis focusses on ECG data used for mortality assessment in cardiology, as well as ECG, respiration, and EEG during sleep. Other polysomnographic signals are shortly mentioned but not analyzed in this book. Various (multifractal) methods of fluctuation analysis including (MF-)DFA are extensively discussed, as well as (B)PRSA for studying quasiocillations, and (phase-)synchronization- and cross-modulation analysis methods for analyzing non-linear correlations in signals. Other tools include spectral methods and wavelet transformation.

Journals: (newest first)
  1. R. P. Bartsch, A. Y. Schumann, Jan W. Kantelhardt, T. Penzel, and P. Ch. Ivanov, Phase Transitions in Physiologic Coupling, PNAS (in press, 2012)
  2. A. Y. Schumann, N. R. Moloney, and Jörn Davidsen, Extreme value and record statistics in heavy-tailed processes with long-range memory, (in print: AGU Monograph "Complexity and Extreme Events in Geoscience", 2012)
  3. A. Y. Schumann and J. W. Kantelhardt, Multifractal Modelling with Tuned Correlations and Multifractal Analysis with Centered Moving Averages, Physica A 390(14), 2637-2654 (2011), doi:10.1016/j.physa.2011.03.002
  4. J. Ludescher, M. I. Bogachev, J. W. Kantelhardt, A. Y. Schumann, and A. Bunde, On spurious and corrupted multifractality: The effects of additive noise, short-term memory and periodic trends, Physica A 390(13), 2480-2490 (2011), doi:10.1016/j.physa.2011.03.008
  5. K. Fuchs, J. W. Kantelhardt, A. Y. Schumann, D. Buck, and T. Penzel, Effects of Respiration and Sleep Stages on Human Baroreflex Sensitivity (submitted, 2010)
  6. A. Y. Schumann, R. P. Bartsch, P. Ch. Ivanov, T. Penzel, and J. W. Kantelhardt, Aging Effects on Cardiac and Respiratory Dynamics in Healthy Subjects across Sleep Stages, Sleep 33(7), 943–955 (2010)
  7. J. W. Kantelhardt, F. Gans, A. Y. Schumann, and T. Penzel, EEG Cross Modulation during Sleep and Wake, Proc. Int. Biosignal Processing Conf., Berlin Germany, 002 (2010)
  8. A. Kuhnhold, A. Y. Schumann, R. P. Bartsch, G. Schmidt, and J. W. Kantelhardt, Cardio-Respiratory Phase Synchronization from Reconstructed Respiration, Proc. Int. Biosignal Processing Conf., Berlin, Germany, 076 (2010)
  9. A. Y. Schumann, A. Kuhnhold, R. P. Bartsch, K. Fuchs, A. Bauer, G. Schmidt, and J. W. Kantelhardt, Reconstructed respiration and cardio-respiratory phase synchronization in post-infarction patients, Proc. 6th Conference of the European Study Group on Cardiovascular Oscillations, Berlin, Germany, 053 (2010)
  10. K. Fuchs, A. Y. Schumann, A. Kuhnhold, P. Guzik, J. Piskorski, G. Schmidt, and J. W. Kantelhardt, Comparing analysis of heart rate and blood pressure fluctuations in healthy subjects, Proc. 6th Conference of the European Study Group on Cardiovascular Oscillations, Berlin, Germany, 056 (2010)
  11. K. Stumpf, A.Y. Schumann, M. Plotnik, F. Gans, T. Penzel, I. Fietze, J.M. Hausdorff, and J.W. Kantelhardt, Effects of Parkinson's disease on brain-wave phase synchronisation and cross-modulation, Europhys. Lett. 89(4), 48001 (2010)
  12. F. Gans, A. Y. Schumann, J.W. Kantelhardt, T. Penzel, and I. Fietze, Cross-Modulated Amplitudes and Frequencies Characterize Interacting Components in Complex Systems, Phys. Rev. Lett. 102, 098701 (2009)
  13. C. Hamann, R. P. Bartsch, A. Y. Schumann, T. Penzel, S. Havlin, and J. W. Kantelhardt, Detection of cardiorespiratory synchronization based on reconstructed respiration, Chaos 19(1):015106 (2009)
  14. A. Y. Schumann, A. Bauer, T. Penzel, G. Schmidt, and J. W. Kantelhardt, Cardiovascular Oscillations and Correlations during Sleep, Proc. 5th Conference of the European Study Group on Cardiovascular Oscillations, Parma, Italy (2008)
  15. A. Y. Schumann, J. W. Kantelhardt, A. Bauer, and G. Schmidt, Bivariate phase-rectified signal averaging, Physica A 387, 5091 (2008)
  16. J. W. Kantelhardt, A. Bauer, A. Y. Schumann, P. Barthel, R. Schneider, M. Malik, and G. Schmidt, Phase-rectified signal averaging for the detection of quasiperiodicities and the prediction of cardiovascular risk, Chaos 17, 015112 (2007)
  17. A. Witt, A.Y. Schumann, Holocene Climate Variability on Millennial Scales Recorded in Greenland Ice Cores, Nonlinear Processes in Geophysics 12, 1-8 (2005), SRef-ID:1607-7946/npg/2005-12-1