Biomechanics and Control of Movements

Head of Department

Prof. Rositsa Raikova, DSc.

  • Email:
  • Phone: (359 2) 8700527, 979365
  • Fax: (359 2) 8723787
  • Address: “Acad. G. Bonchev” Str., Block 105, Room 207A
    Sofia 1113, Bulgaria


Main research topics

Investigation of biomechanics and control of human limbs by nervous system, modeling and simulation of muscle and muscle motor units mechanical activity. Investigation of forces of different motor units evoked by different stimulation patterns.

Development of experimental methodology for estimation of muscle activity in norm and pathology.

Studying and interpretation of changes in bioelectrical signals generated by brain, nerves and muscles’ structures under different behavioral reactions in norm and pathology. Improvement of diagnostics and methods for medical treatment of neurological, psychiatric and nerve-muscle disorders, application of the investigations in rehabilitation and optimal training of sportsmen.

Research projects

Current projects

    1. A realistic model of a rat muscle – modelling of the process of motor units’ activation and deactivation of and of tetanic force development evoked by stimulation with variable interulse intervals with different for each motor unit frequencies
      Budgetary subsidy, 2014-2016
      Coordinator: Prof. Rositsa Raikova
    2. Application of contemporary methods for analysis of signals, generated by myelinated axons and skeletal muscles in the time-frequency domain
      Budgetary subsidy, 2014-2016
      Coordinator: Assoc. Prof. Todor Arabadjiev
    3. Experimental investigation by using surface electromyography data of changes of movements of the upper limbs of patients with insult
      Budgetary subsidy, 2013-2015
      Coordinator: Prof. Rositsa Raikova
    4. Development of a rat muscle model composed by realistic number of motor units and its experimental and modeling investigation by application of different patterns of MUs stimulation
      Bilateral cooperation – Poland, 2012-2014
      Coordinator: Prof. Rositsa Raikova
    5. Experimental and model investigation of the human upper limb movements in health and disease, by using of surface electromyogrpahy and the MOTCO software
      Bilateral cooperation – Poland, 2012-2014
      Coordinator: Assoc. Prof. Hristo Aladjov
    6. Research of axo-glial interactions in myelinated axon
      Bulgarian National Science Fund, № ДМУ03/72, 2011–2014
      Coordinator: Sen. Assist. Prof. Alexander Dimitrov
    7. Essential features of the surface electromyographic potentials recorded from deep and superficial muscles, and their application to the analysis of the functional state of different muscles
      Bulgarian Science Fund, № ДМУ-03-248, 2011-2014
      Coordinator: Assoc. Prof. Todor Arabadjiev
    8. In silico study of effects of bioactive compounds: applications to objects of priority for human health and environmen

Bulgarian Science Fund, № ДТК02/58, 2009–2015
Coordinator: Prof. Ilza Pajeva

Past projects

International collaboration

  • Department of Neurobiology, University School of Physical Education, Poznan, Poland
  • Laboratory of Engineering of Neuromuscular System and Motor Rehabilitation (LISiN), Department of Electronics, Politecnico di Torino, Torino, TO 10138, Italy
  • Public University of Navarra, Department of Health Sciences, Tudela, Navarra , Spain
  • Studies and Sport Medicine Center, Pamplona, Navarra, Spain


  • 2010 – Todor Arabadzhiev – Young Scientists Award, granted by the Union of Scientists in Bulgaria

Lecture courses

  • Indeterminate problems in biomechanics, motor control and different muscle models – University of Bologna, Department of Electronics, Computer Science & Systems, Engineering Faculty, Biomedical Engineering Unit, Bologna, Italy

Selected publications

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