Bulgarian Institute of Solid State Physics
Bulgarian Academy of Sciences














Union of the Physicists in Bulgaria

Created 7.1.2018
Updated 9.8.2019

Stiliyan Nikolov Kalitzin


Born: in Sofia (13.09.1959)


  1. (1973 – 1976) National Mathematical Secondary School, Sofia

  2. (1976 – 1981) Nuclear physics and nuclear technology at the University of Sofia

  3. (1988) Ph.D. in physics from the Bulgarian Academy of Sciences

  4. (December 2002) registered as general clinical physicist from the Dutch Society for Clinical Physics

  5. Bulgarian, Russian, English, Dutch

Technical skills:
  1. Expert in Matlab® technical computing and Simulink® modeling.

  2. Radiation protection level 3 certified.

  3. TMS (transcranial magnetic stimulation) application operator.

  1. 1997, SNN/STW grant “Neural Network Approach to Scale Space Grouping in Image Analysis” (UGN.4496).

  2. 2010,TOP grant, ZonMw foundation in The Netherlands, “Development of a Multimodal Seizure Detection Instrument to improve out-of-hospital safety and disease management of Epilepsy patients.

Professional Experience:
  1. (December 1981 – October 1990) research staff member in the Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, Sofia, Bulgaria

  2. (October 1990 – October 1992) post doctoral position at the University of Utrecht in the Institute for Theoretical Physics

  3. (November 1992 – March 1996) post doctoral position in the Netherlands Ophthalmic Research Institute in Amsterdam Medical Center, department of Visual System Analysis

  4. (March 1996 – October 1999) Research position in the Image Sciences Institute at the University Medical Center in Utrecht

  5. (Since October 1999) Permanent employment as head of medical physics department at Stichting Epilepsie Instellingen Nederland, Heemstede.


  1. International patent, WO 2002/13139 (US 6,725,174 B4; CA 2 417 749; DE 601 02 247 T2 2005.02.24), “Edge preserving enhancement of seismic images by nonlinear anisotropic diffusion”

  1. J. van Andel1, C. Ungureanu, J. Arends, F. Tan, J. Van Dijk, G. Petkov, S. Kalitzin, T. Gutter, Al de Weerd, B. Vledder, R. Thijs, G. van Thiel, K. Roes, F. Leijten, Multimodal, automated detection of nocturnal motor seizures at home: is a reliable seizure detector feasible? (2017)

  2. S. Kalitzin, Integrated Automated System for Epileptic Seizure Alerts (2017)

  3. S. Kalitzin, B. Schipper, D. Spencer, H. Zaveri, F. da Silva, Conjoint Observation of Distinct Oscillatory Brain States in Intracranial and Scalp EEG (2017)

  4. P. Bauer, R. Thijs, R. Lamberts, D. Velis, G. Visser, E. Tolner, J. Sander, F. Lopes da Silva, S. Kalitzin, Dynamics of convulsive seizure termination and postictal generalized EEG suppression, Brain, January 2017

  5. P. Bauer, R. Thijs, R. Lamberts, D.Velis, G. Visser, E. Tolner, J. Sander, F. Lopes da Silva, S. Kalitzin, Dynamics of convulsive seizure termination and postictal generalized EEG suppression, Brain (2016)

  6. S. Kalitzin, P. Bauer, R. Lamberts, D. Velis, R. Thijs, F. Lopes Da Silva, Automated Video Detection Of Epileptic Convulsion Slowing As a Precursor For Post-Seizure Neuronal Collapse, International Journal of Neural Systems, December 2016, DOI: 10.1142/S0129065716500271

  7. S. Kalitzin, M. Koppert, G. Petkov, F. da Silva, Multiple oscillatory states in models of collective neuronal dynamics, International Journal of Neural Systems, Int. J. Neur. Syst. 24 (06) 1450020 (2014)

  8. G. Petkov, N. Mladenov, S. Kalitzin, Integral scene reconstruction from general over-complete sets of measurements, Int. Journal of Computer Aided Engineering, 20, pp 95 (2013)

  9. S. Kalitzin, G. Petkov, D. Velis, B. Vledder, Fernando Lopes da Silva Automatic segmentation of episodes containing epileptic clonic seizures in video sequences, TBME, Issue 99 (2012)

  10. S. Kalitzin, Petkov G, Velis D et al. Automatic Segmentation of Episodes Containing Epileptic Clonic Seizures in Video Sequences. IEEE Trans Biomed Eng 2012; 59: 3379-3385

  11. S. Kalitzin, D. Velis, F. Lopes da Silva, Stimulation-based anticipation and control of state transitions in the epileptic brain, Epilepsy Behav 2010, 17, 310-323

  12. S. Kalitzin, J. Parra, D. Velis, F. Leijten, F. Lopes da Silva, Quantification of unidirectional nonlinear associations between multidimensional signals. IEEE Trans Biomed Eng 2007, 54, 454–61.

  13. C. van der Togt, S. Kalitzin, H. Spekreijse, V. Lamme, H. Super, Synchrony dynamics in monkey V1 predict success in visual detection, Cereb Cortex, 16(1) 136-48 (2006)

  1. Personal Website