Prof. Rositsa Raikova, DSc | Publications

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Selected Publications

  1. Raikova, Aladjov H., Krutki P., Celichowski J. (2016) Estimation of the error between experimental tetanic force curves of MUs of rat medial gastrocnemius muscle and their models by summation of equal successive contractions. Computer Methods in Biomechanics and Biomedical Engineering, 19(7),763-770. Impact factor: 1.77
  2. Celichowska-Drzymala H., Raikova, Krutki P. (2016) Prolonged activity evokes potentiation and the “sag” phenomenon in slow motor units of rat soleus. Acta Neurobiol. Exp., 76, 152-157. Impact factor: 1.57
  3. Raikova R., Celichowski J., Krutki P. (2016) A general mathematical algorithm for predicting the course of unfused tetanic contractions of motor units in rat muscle. Plos One. 11(9):e0162385 Impact factor:  3.234
  4. Raikova, Angelova S.,  Ribagin S. (2016) Changes in EMG activities of upper arm muscles and in shoulder joint angles in post-stroke patients. International Journal  Bioautomation, 20(3), 389-406 SJR: 0.134
  5. Angelova S., Ribagin S., Raikova, Veneva I. (2017) Power Frequency Spectrum Analysis of Surface EMG Signals of Upper Limb Muscles During Elbow Flexion – A Comparison Between Healthy Subjects And Stroke Survivors. Journal of Electromyography and Kinesiology), 38,7-16.  Impact factor 1.51
  6. Christov, Raikova R., Angelova S. (2018) Separation of electrocardiographic from electromyographic signals using dynamic filtration. Medical Engineering and Physics, 57, 1-10. Impact factor 1.819
  7.  Raikova R., Celichowski J., Angelova S.,  Krutki P. (2018) A model of the rat medial gastrocnemius muscle based on inputs to motoneurons and on an algorithm for prediction of the motor unit force. Journal of Neurophysiology, 120(4):1973-1987, https://doi.org/10.1152/jn.00041.2018  Impact factor 2.502
  8. Krysciak K., Celichowski J., Krutki P., Raikova R., Drzymala-Celichowska H. (2019) Factors contributing to sag in infused tetanic contractions of fast motor units in rat medial gastrocnemius. Journal of Electromyography and Kinesiology, 44:70-77. doi: 10.1016/j.jelekin.2018.11.011. Impact factor: 1.51
  9. Raikova R. (1992) A general approach for modelling and mathematical investigation of the human upper limb. Journal of Biomechanics, 25, 857-867.
    Impact factor: 2.784
  10. Raikova R. (1996) A model of the flexion-extension motion in the elbow joint – some problems concerning muscle forces modelling and computations. Journal of Biomechanics, 29,  763-772. Impact factor: 2.784.
  11. Raikova R. (1999) About weight factors in the non-linear objective functions used for solving indeterminate problems in biomechanics. Journal of Biomechanics, 32, 689-694. Impact factor: 2.784
  12. Raikova R. (2000) Prediction of individual muscle forces using Lagrange multipliers method – a model of the upper human limb in the saggital plane: I. Theoretical considerations. Computer Methods in Biomechanics and Biomedical Engineering, 3, 95-107.
    Impact factor: 1.301
  13. Raikova R. (2000) Prediction of individual muscle forces using Lagrange multipliers method – a model of the upper human limb in the saggital plane: II. Numerical experiments and sensitivity analysis. Computer Methods in Biomechanics and Biomedical Engineering, 3, 167-182.
    Impact factor: 1.301
  14. Raikova R.T. (2000) Some mechanical considerations on muscle coordination. Motor Control, 4, 89-96.
    Impact factor: 1.233
  15. Raikova R. (2001) Investigation of the peculiarities of two-joint muscles using a 3 DOF model of the human upper limb in the sagittal plane: an optimization approach. Computer Methods in Biomechanics and Biomedical Engineering, 4, 463-490.
    Impact factor: 1.301
  16. Raikova R.T., Prilutsky B.I. (2001) Sensitivity of predicted muscle forces to parameters of the optimization-based human leg model revealed by analytical and numerical analyses. Journal of Biomechanics, 34, 1243-1255.
    Impact factor: 2.784
  17. Raikova  R.,  Aladjov H. Ts. (2002) Hierarchical genetic algorithm versus static optimization  – investigation of elbow flexion and extension movements. Journal of Biomechanics, 35, 1123-1135.
    Impact factor: 2.784
  18. Raikova R.T., Prilutsky B.I. (2002) Authors’ responce. Journal of Biomechanics, 35, 1437-1438.
    Impact factor: 2.784
  19. Raikova R.T., Aladjov H.Ts. (2003) The influence of the way the muscle force is modeled on the predicted results obtained by solving indeterminate problems for a fast elbow flexion. Computer Methods in Biomechanics and Biomedical Engineering, 6, 181-196.
    Impact factor: 1.301
  20. Raikova R.T., Aladjov Hr.Ts. (2004) Simulation of the motor units control during a fast elbow flexion in the sagittal plane. Journal of Electromyography and Kinesiology, 14, 227-238. Impact factor: 1.884
  21. Raikova R.T., Aladjov Hr. Ts.  (2005) Comparison between two muscle models under dynamic conditions. Computers in Biology and Medicine, 35, 373-387. Impact factor: 1.272
  22. Celichowski J., Pogrzebina M., Raikova R.T. (2005) Analysis of the unfused tetanus course in fast motor units of the rat medial gastrocnemius muscle. Archives Italiennes de Biologie, 143, 51-63.
    Impact factor: 0.65
  23. Raikova R.T., Gabriel D.A., Aladjov H.Ts. (2005) Experimental and modelling investigation of learning a fast elbow flexion in the horizontal plane. Journal of Biomechanics, 38, 2070-2077.
    Impact factor: 2.784
  24. Raikova R.T., Gabriel D.A., Aladjov H. (2006) Modelling investigation of learning a fast elbow flexion in the horizontal plane – prediction of muscle forces and motor units action.  Computer Methods in Biomechanics and Biomedical Engineering, 9, 211-219.
    Impact factor: 1.301
  25. Raikova R., Celichowski J., Pogrzebna M., Aladjov H., Krutki P. (2007) Modeling of summation of individual twitches into unfused tetanus for various types of rat motor units. Journal of Electromyography and Kinesiology, 17, 121-130
    Impact factor: 1.884
  26. Raikova R., Krutki P., Aladjov H., Celichowski J. (2007) Variability of the twitch parameters of the rat medial gastrocnemius motor units – experimental and modeling study. Computers in Biology and Medicine, 37, 1572-1581.  Impact factor: 1.272
  27. Raikova R., Pogrzebna M., Drzymała H., Celichowski J., Aladjov H. (2008) Variability of successive contractions subtracted from unfused tetanus of fast and slow motor units. Journal of Electromyography and Kinesiology, 18, 741-751.
    Impact factor: 1.884
  28. Krutki P., Pogrzebna M., Drzymala H., Raikova R., Celichowski J. (2008) Force generated by fast motor units of the rat medial gastrocnemius muscle during stimulation with pulses at variable intervals. Journal of Physiology and Pharmacology, 59, 85-100.
    Impact factor: 4.47
  29. Celichowski J., Raikova R., Drzymala-Celichowska H., Ciechanowicz I., Krutki P., Rusev R.  (2008) Model-generated decomposition of motor unit unfused  tetani evoked at random stimulation pattern. Journal of Biomechanics, 3448-3454. Impact factor: 2.784
  30. Raikova R., Rusev R., Drzymała-Celichowska H., Krutki P., Aladjov H., Celichowski J. (2010)  Experimentally verified mathematical approach for prediction of force developed by motor units at variable frequency stimulation patterns. Journal of Biomechanics, 43, 1546-1552.
    Impact factor: 2.784
  31. Krutki P., Celichowski J., Raikova R (2012) Motor unit contractions evoked by stimulation with variable interpulse intervals, Biocybernetics and Biomedical Engineering, 32 (3),  29-42.
    Impact factor: 0.208
  32. Raikova R., Aladjov H., Celichowski J., Krutki P. (2013) An approach for simulation of the muscle force modeling it by summation of motor unit contraction forces.  Computational and Mathematical Methods in Medicine, 2013, Art. No. 625427.
    Impact factor: 1.018
  33. Krutki P., Mrówczyński W., Raikova R., Celichowski J. (2014) Concomitant changes in afterhyperpolarization and twitch following repetitive stimulation of fast motoneurones and motor units. Experimental Brain Research,  232 (2), 443-452.
    Impact factor: 2.168
  34. Celichowski J.,  Raikova R., Aladjov H.,  Krutki P. (2014)  Dynamic changes of twitch-like responses to successive stimuli studied by decomposition of motor unit tetanic contractions in rat medial gastrocnemius. Journal of Neurophysiology,  112, 3116-3124.
    Impact factor: 3.041
  35. Mrówczyński  W., Celichowski J., Raikova R., Krutki P. (2015) Physiological consequences of doublet discharges on motoneuronal firing and motor unit force. Frontiers in Cellular Neuroscience, vol.9, Art.No 81, 1-6.
    Impact factor: 4.175
  36. Raikova R., Aladjov H., Krutki P.,  Celichowski J. (2015) Estimation of the error between experimental tetanic force curves of MUs of rat medial gastrocnemius muscle and their models by summation of equal successive contractions. Computer Methods in Biomechanics and Biomedical Engineering    DOI:10.1080/10255842.2015.1062090
    Impact factor: 1.77
  37. Hanna Drzymała-Celichowska H., Raikova R., Krutki P. (2015) Decomposition of motor unit tetanic contractions of rat soleus muscle: Differences between males and females. Journal of Biomechanics,  Accepted: July 18, 2015; Published Online: July 28, 2015 DOI: http://dx.doi.org/10.1016/j.jbiomech.2015.07.019
    Impact factor: 2.751

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