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CCS Seminar
Professor Plamen Ivanov
Boston University Physics Department
Friday - April 2, 2010
12:00 noon
Physics Research Building - Room 595
3 Cummington Street

"Scale-invariant aspects of physiologic dynamics"

Abstract:
Physiological systems under neural regulation exhibit erratic  fluctuations, which traditionally have been considered as noise and thus, often neglected. However, recent findings indicate that physiologic fluctuations exhibit a temporal scale-invariant structure spanning time scales from seconds to hours, resembling the behavior of nonequilibrium physical systems characterized by power-law long-range correlations and fractal 1/f-type behavior. We will briefly review scale-invariance as a fundamental concept in modern physics, and we will demonstrate its usefulness in studying physiologic dynamics on examples from three complex physiologic systems under integrated neural control -- cardiac dynamics, locomotion and sleep.
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Bio-sketch:
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Plamen Ch. Ivanov received a M.S. degree in Theoretical Physics/Condensed Matter Physics from Sofia University, Bulgaria, in 1988, a Ph.D. in Biophysics from Boston University in 1998, and a D.Sc. from the Bulgarian Academy of Sciences in 2007. He is currently a Research Associate Professor at the Physics Department at Boston University, and a Lecturer at the Division of Sleep Medicine at Harvard Medical School.

Dr. Ivanov's research interests include methods of analysis and modeling of integrated biological and physiological systems and networks; neural regulation; stochastic processes and phase transitions. He has served as an editor of Fluctuation and Noise Letters (FNL) in the period 2000-2002, and he currently serves as a Co-Editor of Europhysics Letters (EPL) and on the Editorial Board of the Journal of Biological Physics (JOBP).

 

 

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